VITAE
INDERJIT CHOPRA
Alfred Gessow Professor in Aerospace Engineering &
Director Alfred Gessow Rotorcraft Center
University of Maryland, College Park, MD 20742
Ph.: (301) 405-1122, Fax: (301) 314-9001
chopra@eng.umd.edu
Professional Multidisciplinary research in rotorcraft aeromechanics with focus
Interest:
on structural dynamics, aeroelasticity, smart structures and micro air
vehicles.
Education:
Massachusetts Institute of Technology (1974-77)
Sc. D. in Aeronautics & Astronautics
Thesis: "Nonlinear Dynamic Response of Wind Turbine Rotors"
Indian Institute of Science, Bangalore, India (1966-68)
M.E. with Distinction in Aeronautical Engineering
Thesis : "A Study of Some Problems in Panel Flutter"
Experience:
National Aerospace Laboratory, Bangalore, India (1966-74)
Scientist in Structural Sciences Division
Carried out design, fabrication and testing of dynamically scaled
aeroelastic models of typical aircraft wings and satellite launch
vehicles in low speed and supersonic wind tunnels. Then using these
data, validated aeroelastic analyses. In parallel, developed vibration
and flutter analysis of thin panels that included skewed, trapezoidal
and tapered thickness plates.
Massachusetts Institute of Technology (Sept. 1974 - May 1977)
Research Assistant, and later Post-Doctoral Fellow in Aero & Astro
Dynamic Analyses of Wind Turbines: Developed a coupled nonlinear
flap-lag-torsion aeroelastic analysis of a horizontal axis wind turbine
taking into consideration effects of gravitational loading and earth's
boundary layer, especially for large diameter rotors. Dynamic blade
response and parametric resonance instability were investigated
systematically for different operating conditions. Limit cycle flutter
analysis was carried out using harmonic balance method. Results
showed the possibility of sustained limit cycle blade motions at some
rotational speeds if large enough disturbance is given to blades
(possible with atmospheric gust) (very first study on this topic).
Stall Flutter and Divergence of Wings: Simple wing models were tested in
a low speed wind tunnel for nonlinear stall flutter characteristics.
Harmonic coefficients were extracted from the free transient vibration
data in pre- and post-stall regions. These coefficients are important to
develop dynamic stall models.
NASA Ames Research Center (June 1977 to May 1978)
National Research Council Post-Doctoral Fellow
Dynamic Analysis of Circulation-Controlled Rotors: Theoretical analyses
for flight stability and flutter stability of circulation control rotors in
hover were formulated (very first time). The effect of trailing edge
blowing on the handling qualities of a helicopter in longitudinal and
lateral modes and blade flap-lag flutter stability was examined for
different flight conditions and rotor configurations. It was shown that
the blowing has a powerful effect on blade stability, which should be
considered in rotor design. These key findings were useful in
subsequent development of the X-Wing aircraft.
Stanford University (June 1978 to October 1981)
Senior Research Associate at NASA/Stanford University Joint Institute of
Aeronautics and Acoustics
Dynamic Testing of Full-Scale Rotors in 40 x 80 foot Wind Tunnel:
Advanced algorithms were developed on a Dynamic Analysis System
(a minicomputer based time series system) for on-line stability
measurement of rotors in a wind tunnel. These include: diagnostic
blade response and loads, moving-block damping identification, Bode
plots and regressing rotor loads analyses. These algorithms were used
in various full-scale helicopter rotor tests in the 40 x 80 ft wind tunnel,
that include Kaman Circulation Controlled Rotor, Lockheed X-Wing
Rotor, Boeing Bearingless Main Rotor, Sikorsky ABC Rotor, and
Hughes Advanced Composite Rotor tests. Many of these algorithms
are routinely used even today for rotor testing in the 40 x 80 / 80 x 120
ft. wind tunnel (World's largest wind tunnel).
Aeroelastic Analysis of Advanced Rotors: Flap-lag-torsion flutter of two
new rotor configurations, constant-lift rotor and free-tip rotor was
investigated. The effect of several design parameters on flutter
boundary was evaluated.
Finite Element Analysis of Rotor Blades: Finite element aeroelastic
analysis of an elastic blade undergoing moderately large coupled flap,
lag, torsion and axial deformations was formulated using Hamilton's
approach. Hover stability was calculated from the normal mode
equations. The analysis was initially applied to conventional rotors
(articulated and hingeless) and later on was extended to include
multiple load-path blades such as BMR blades. This was the very first
finite element formulation of a bearingless rotor and formed the basis
of modern structural analysis of blades.
Multicyclic Vibration Control: A study was conducted to examine the
performance of various active feedback control systems for vibration
reduction of helicopters. The controllers studied were: open-loop with
off-line identification, closed-loop with off-line identification, openloop adaptive, and closed-loop adaptive. The on-line identification of
model characteristics was performed using a Kalman filter solution.
The design implication of different regulators was examined for
various flight conditions. This study helped in the selection of a
feedback controller for full-scale testing of a rotor system in the 40x80
ft wind tunnel.
University of Maryland (October 1981 - Present)
Department of Aerospace Engineering
October 1981 to June 1986 - Associate Professor
July 1986 to Present - Professor
June 1988 to August 1990 - Acting Department Chairman
From October 1991 - Director Alfred Gessow Rotorcraft Center
January 1996 to January 2000 - Minta-Martin Research Professor
From November 1998 - Alfred Gessow Professor
Teaching: Taught following undergraduate and graduate courses.
• Flight Structures I & II (Undergraduate)
• Vibration & Aeroelasticity (Undergraduate)
• Structural Dynamics (Graduate)
• Aeroelasticity (Graduate, developed new course)
• Helicopter Dynamics (Graduate, developed new course)
• Helicopter Theory (Graduate/Undergraduate)
• Smart Structures (Graduate, developed new course)
• Helicopter Design (Graduate)
Research Tasks: Rotorcraft aeromechanics, smart structures and micro
air vehicles research programs at the Alfred Gessow Rotorcraft Center.
Worked on various fundamental multidisciplinary/interdisciplinary
research problems of helicopters including aeromechanical stability,
prediction of vibration and loads, CFD coupling with comprehensive
analysis, active vibration control, modeling of composite coupled
rotors, rotor head health monitoring, aeroelastic optimization, damping
identification, adaptive control strategies, wire strike studies, wing
vortex upsets and gust response studies, innovative rotor designs
including swashplateless rotor systems, modeling and applications of
smart structures, micro air vehicles, and comprehensive aeromechanics
analyses of bearingless, tilt-rotor, teetering, coaxial, compound, servoflap, and circulation control rotors. Research was balanced between
analysis and experimental testing under controlled environment.
Honors & Awards (From 1990 onward):
1. Elected as a Fellow of American Institute of Aeronautics and Astronautics for
notable contributions in Aerospace Engineering, May 1991
2. Invited to give a keynote address, "State of the Art on Helicopter Dynamics" at the
20th Anniversary symposium of Agency for Defense Development, Daejeon,
Korea in October 1990 (500 attendees)
3. Invited to give a keynote address, "Design and Analysis Trends of Helicopter
Rotor Systems," at the Third South African Aeronautical Engineering Conference
held at Pretoria on August 14-16, 1991 (800 attendees)
4. Selected as a United States National Delegate to the NATO Advisory Group for
Aerospace Research and Development (AGARD) to give a series of lectures on
"Dynamics and Aerodynamics of Helicopters" at ONERA, France on October 1-3,
1991.
5. Awarded UM's 1992-93 Distinguished Faculty Research Professorship.
6. Awarded Distinguished Alumnae of Indian Institute of Science at the Golden Jubilee
Celebration in December 1992 (25 alumnae were recognized spanning over a
period of 50 years).
7. Invited to give Bisplinghoff-Mar-Pian Distinguished Lecture at MIT in March 1993.
8. Invited to give one of the Keynote Lectures, “Status of Smart Structures and
Integrated Systems,” at the 2rd European Conference on Smart Structures &
Materials, Glasgow, UK, October 1994.
9. Awarded UM's 1995 Presidential Award for Outstanding Service to the Schools.
10. Best Paper Award: Chen, P. and Chopra, I., "Smart Rotor with Induced-Strain
Piezo-Actuation of Rotor Blade Twist," Second Workshop on Smart Structures,
October 1995 (one out of 50 papers).
11. 1996 AIAA/ASME Best Paper Award: Chen, P. and Chopra, I., "Hover Testing of a
Smart Rotor with Induced-Strain Actuation" at AIAA SDM Conference, Salt Lake
City, April 1996 (one out of 250 papers).
12. Invited to give a keynote address, "State-of-Art of Smart Structures and
Integrated Systems" at Silver Jubilee Celebration of the Indian Aeronautical
Research Development Board at Bangalore, May 1996 (1000 attendees).
13. Awarded a Fellowship of the American Helicopter Society in June 1996 in
recognition of outstanding contributions to the goals and objectives of the vertical
flight industry (2 to 4 awards per year, 6000 member society).
14. Awarded a Minta-Martin Research Professorship in January 1997.
15. Invited to give the keynote lecture at the International Seminar on Futuristic
Aircraft Technologies, "Frontiers of Rotorcraft Aeromechanics Research," AERO
96 Conference in Bangalore, India, December 1996 (1500 attendees).
16. Invited to give a keynote lecture at the SPIE Far East & Pacific Rim Symposium on
Smart Materials, Structures & MEMS, "Status of Smart Structures Technology,"
Bangalore, India, December 1996 (1000 attendees).
17. 1996 AHS Robert L. Lichten Award: Best technical paper presented at a regular
meeting by Andreas Bernhard, “Trailing Edge Flap Activated by a Piezo-Induced
Bending-Torsion Coupled Beam,” Bernhard and Chopra.
18. Selected as a member of the Army Science Board in November 1997, Re-appointed
in 99 (up to 2002).
19. Given a Lectureship Award in May 1997 by Japan International Aircraft
Development Fund to foster mutual cooperation and discussions in
rotorcraft/smart structures disciplines with Japanese industry, academia and
federal laboratories. 2 week visits and lectures at Universities (Nagoya, Tokyo),
Industries (Mitsubishi, Kawasaki, Fuji) and Federal Laboratories (NAL).
20. Selected as Alfred Gessow Professor, November,1998.
21. Elected as Fellow of the Aeronautical Society of India, October,1998.
22. As a Faculty Advisor, won the 15th American Helicopter Society Student Design
Competition: First Place Graduate Award and New College Entrant Award
23. Invited to give a Keynote Lecture, “Status of Application of Smart Structures
Technology to Rotorcraft Systems,” at the 9th International Conference on
Adaptive Structures and Technologies, Cambridge, MA, October 1998 (150
attendees).
24. Invited to give a keynote lecture “Design Trends in Rotorcraft,” at the AERO
INDIA 98: International Seminar on Aerospace Opportunities and Trends,
Organized by the Aeronautical Society of India, December 1998 (1000 attendees).
25. Invited to give a Keynote Lecture, “State-of-Art on Rotorcraft Aeromechanics,”
at the 2nd Australian Pacific Vertiflite Conference, Canberra, 16-17 July 1998 (800
attendees).
26. Invited to give a Special Distinguished Lecture, “Alfred Gessow Rotorcraft
Center: Accomplishments & Current Research,” at the Annual Meeting of the
Royal Aeronautical Society, Canberra, Australia, July 19, 1998 (500 attendees).
27. Invited to give one of the Keynote Lectures, “Update on Smart Structures
Technology,” at the 13th US National Congress of Applied Mechanics, Gainesville,
FL, June 1998
28. Invited to give a Series of Lectures on “Helicopter Aeromechanics and Smart
Structures” by Nanjing Aeronautics and Astronautics University, China,
December 1998.
29. Invited to give a Keynote Lecture, “Status of Smart Structures and Integrated
Systems,” at the 10th International Conference on Adaptive Structures and
Technologies, Paris, France, October 1999 (200 attendees).
30. As a Faculty Advisor, won the 16th American Helicopter Society Student Design
Competition: First Place Graduate Award, September 1999.
31. Invited to give an Invited Lecture at the 8th ARO Workshop on Aeroelasticity of
Rotorcraft Systems, Penn State University, October 18-20, 1999.
32. Certificate of Appreciation from the AHS International for contributing to the
technical excellence of the Journal of the American Helicopter Society, January 28,
2000.
33. Invited to give Keynote Lecture on “Update on Application of Smart Structures
Technology to Rotorcraft Systems,” 11th International Conference on Adaptive
Structures and Technologies (ICAST), Nagoya, Japan, October 2000 (200
attendees).
34. As a Faculty Advisor, won the 17th American Helicopter
Society/NASA/Sikorsky Student Design Competition: First Place Graduate
Award, October 2000.
35. Invited as a Panel Member for “Improving Rotorcraft Acceptance Through
Active Controls Technology,” at the AHS National Specialists’ Meeting,
Bridgeport, CT, October 2000.
36. As a member of a coalition of 10 professional societies (representing one million
scientists and engineers), was invited to brief congressmen and their staff on
“Crisis in U.S. Aviation Research and Technology” at Capitol (Rayburn House) in
October 19, 2000.
37. Awarded Certification of Appreciation for Distinguished Services to ASME at
Congress 2000.
38. Awarded 2001 ASME Adaptive Structures and Material Systems Award, a lifetime achievement award in adaptive structures and material systems. As a part of
this award, gave an invited lecture, “Review of State-of-Art of Smart Structures
and Integrated Systems,” at the 42nd AIAA/ASME/ASCE/ACS/AHS SDM and
Adaptive Structures Forum, Seattle, WA, April 2001.
39. Awarded Vice President (Al Gore) Hammer Award for National Partnership for
Reinventing Government as a member of NRTC Team, January 2001.
40. Awarded the Certificate of Appreciation from The Secretary of Defense (William
S. Cohen) in recognition of dedicated and selfless services in support of the
United States Armed Forces, as a member of the Army Science Board, January
2001.
41. As a Faculty Advisor, won the 18th American Helicopter Society/Boeing Student
Design Competition: First Place Graduate Award, October 2001.
42. Invited to give a Distinguished Lecture in the College of Engineering at Penn
State, “Technology Update on Smart Structures,” November 2001.
43. Awarded the 2002 AIAA Structures, Structural Dynamics, and Materials Award:
A life-time achievement award for contributions in aerospace structures,
structural dynamics and materials. Award was presented at the 43rd
AIAA/ASME/ASCE/AHS/ASC SDM Conference held at Denver, CO, April
2002.
44. Awarded the 2002 A. J. Clark School of Engineering Faculty Outstanding
Research Award: given one award annually in recognition of exceptional and
influential research accomplishments and contributions.
45. As a Faculty Advisor, won the 19th American Helicopter Society/Bell Student
Design Competition: First Place Graduate Award, August 2002.
46. Best Paper Award: “Validation and Understanding of UH-60A Vibration Loads
in Steady Level Flight", by A. Datta and I. Chopra, AHS Annual Forum Dynamics
Papers, June 2002.
47. Invited to give 2003 AIAA SDM Lecture: “Micro Hovering Air Vehicle:
Challenges and Opportunities” at the 44th AIAA/ASME/ASCE/AHS/ASC
Structures, Structural Dynamics and Materials Conference in Norfolk, VA on
April 7, 2003.
48. Invited to give a Distinguished Lecture at the University of Minnesota, April
2003
49. Elected as a Fellow of American Society of Mechanical Engineers (ASME) in
February 2003 for notable contributions to mechanical sciences and engineering.
50 Invited to give Second Henry J. Kelley Memorial Lecture at VPI & State
University on “Review of State-of-Art of Smart Structures and Integrated
Systems” on December 8, 2003 (about 200 attendees).
51. von Karman Lecture: Israel Society of Aeronautics and Astronautics selected to
give the Keynote Lecture at the 44th Israel Conf. on Aerospace Sciences held at
Tel Aviv on February 25-26, 2004 (about 500 attendees).
52. As a Faculty Advisor, won the 20th American Helicopter Society/Sikorsky
International Student Design Competition: First Place Graduate Award, August
2003.
53. Best Paper Award: “Validation of Structural and Aerodynamic Modeling Using
UH-60 Flight Test Data ", by A. Datta and I. Chopra, AHS Annual Forum
Dynamics Papers, May 2003.
54. SPIE Smart Structures & Materials 2004 Lifetime Achievement Award: given in
recognition as a visionary research leader, educator, and for service to
professional community. Awarded at Plenary Session of the SPIE Smart Materials
& Structures Symposium held at San Diego on March 15, 2004.
55. 2004 SPIE Best Paper Award: “Material Characterization of Galfenol,” by J.
Atulsimha, A. Flatau and I. Chopra, SPIE Smart Materials & Structures
Symposium, San Diego, CA, March 2004.
56. Society of American Military Engineers Invited Heritage Lecture: Blue Ridge
Post (VA) invited to give a special heritage lecture on “Micro Air Vehicles” on
May 26, 2004.
57. Fellow of NIA: National Institute of Aerospace at NASA-Langley selected among
member universities a Fellow based on demonstrated leadership in research in
aerospace engineering, earth sciences and related fields, May 2004.
58. Paul E. Hemke Lecture in Aerospace Engineering: RPI invited to give a
distinguished lecture on “Micro Hovering Air Vehicles: Challenges and
Opportunities” in October 2004 (about 250 attendees).
59. As a Faculty Advisor, won the 21st
American Helicopter Society/Agusta
International Student Design Competition: First Place Graduate Award, August
2004.
60. As a Faculty Advisor, won the 22nd American Helicopter Society/Sikorsky
International Student Design Competition: First Place Graduate Award, August
2005.
61. 2005 International Conference on Smart Structures, Bangalore (India), July 28-30,
2005, Invited to give the Keynote Lecture on “Review of the Status of Smart
Structures and Integrated Systems.”
62. 1st US-European Micro-Aerial Vehicle Technology Demonstration and
Assessment, 19-22 September 2005 in Garmisch-Partenkirchen, Germany,
Invited to give one of the Invited Talks on “Development of Hovering MAVs.”
62. Indo-US Workshop on Micro Air Vehicles, Bangalore (India) August 1-2, 2005,
Invited to give the Keynote Lecture on “Integrated MAV Systems: Rotary-Wing
and Flapping Wings.”
63. Best Paper Award: “Prediction of UH-60A Dynamic Stall Loads in High Altitude
Level Flight Using CFD/CSD Coupling ", by A. Datta and I. Chopra, AHS Annual
Forum Dynamics Papers, May 2005.
64. As a Faculty Advisor, won the Second Place in the 23rd American Helicopter
Society/Bell International Student Design Competition: Graduate Award, August
2006.
65. 2007 NASA Group Achievement Award: for Heavy Lift Rotorcraft Systems
Inverstigation.
Award and Honors for Rotorcraft Center:
65. 1992 AHS Grover E. Bell Award: The US Army Rotorcraft Centers of Excellence
Award for making outstanding contributions in the rotary-wing field: University
of Maryland (Chopra), Georgia Tech (Schrage) and RPI (Loewy).
66. AHS Francois Xavier Bagnoud Vertical Flight Award: Since its inception in 1993,
six of Dr. Chopra’s students won this award. This award is given annually by the
American Helicopter Society to recognize outstanding contributions to vertical
flight technology by a young contributor.
- 1994: Ed Smith (Currently, Professor & Director Rotorcraft Center of
Excellence at Penn State)
- 1996: Michael Torok (Currently, Director Flight Sciences, Sikorsky Aircraft Co.)
- 1998: Farhan Gandhi (Currently, Professor, Rotorcraft Center of Excellence at
Penn State)
- 1999: Andreas Bernhard (Currently Flight Manager at Sikorsky Aircraft Co.)
- 2004: Nikhil Koratkar (Currently Associate Professor at RPI)
- 2006: Anubhav Datta (Currently Assistant Research Scientist at UM)
67. AHS Vertical Flight Foundation Scholarships: American Helicopter Society
awards every year competitively 10 to 12 merit-based scholarships to outstanding
graduate and undergraduate students internationally. Dr. Chopra has played a
key role in the identification and selection of UM students. As a result of this, UM
students have won about 50% of total awards during the past eleven years.
1994: 3 Awards: Milgram, Gandhi, Bagai
1995: 3 Awards: Jones, Migram, Srinivas
1996: 3 Awards: Coyne, Jones, Moedersheim
1997: 2 Awards: Bernhard, Kamath
1998: 7 Awards: Koratkar, Kiddy, Lee, Linder, Singh, Smith, Snyder
1999: 6 Awards: Snyder, Bhagwat, Samuel, Tarascio, Rooney, Chehab
2000: 8 Awards: Chehab, Dimock, Martin, Pereira, Prahlad, Purekar, Samuel,
Sirohi
2001: 5 Awards: Bao, Tarascio, Pereira, Roget, Rosenfeld
2002: 7 Awards: Couch, DuVall, Gervais, Gopalan, Ribera, Roget, Ruddy
2003: 7 Awards: Ryan, Berry, Hein, Rosenfeld, Tarascio, Datta, Gervais
2004: 7 Awards: Ananthan, Bohorquez, Calabro, Couch, Drysdale, Ellison,
Schmaus
2005: 5 Awards: Cook, Calabro, Falls, Hein, Hu
2006: 3 Awards: Falls, Bury, Rosengeld
68. 2002 AHS Grover E. Bell Award: The Center was given this prestigious award for
its pioneering fundamental contributions in smart structures technologies that
had a successful transition into helicopter systems. The award was given at the
AHS Annual Forum held at Montreal, Canada, June 2002.
Thesis Advisor:
Guided following students in their Ph.D. dissertations:
1. Nithiam Sivaneri, "Aeroelastic Stability of Rotor Blades Using Finite Element
Analysis," June 1982, (Professor of Aerospace Engineering, University of West
Virginia)
- Associate Dean & Director of Graduate Program
2. Brahmananda Panda, "Dynamic Stability of Hingeless and Bearingless Rotor
Blades in Forward Flight," August 1985, (Senior Technical Specialist, Boeing
Helicopters-Philadelphia)
3. Chang-Ho Hong, "Aeroelastic Stability of Composite Rotor Blades in Hover," July
1985, (Professor, Choong-Nam National University, Korea)
- Department Chairman of Aerospace Engineering
4. Gunjit S. Bir, "Gust Response of Articulated and Hingeless Rotors," November
1985, (Senior Dynamist, Department of Energy, NREL)
- Head of Rotor Dynamics Group
5. Andrew L. Dull, "Aeroelastic Stability of Bearingless Rotors in Forward Flight,"
July 1986, (Col. U.S. Army, now Technical Manager at Lockheed Martin Corp.,
Huntsville, AL)
- Former Chairman of Aerospace Engineering Department, U.S. Military
Academy, West Point
6. Venkat Raghavan, "Unsteady Force Calculations on Circular and Elliptical Airfoils
with Circulation Control," December 1987, (Research Engineer, ASTROX Corp.)
7. Andrew S. Elliott, "Calculation of Steadily Periodic and Gust Responses of a
Hingeless Rotor Helicopter Using 2-D Time Domain Unsteady Aerodynamics,"
October 1987, (Senior Engineer, Mechanical Dynamics Inc.)
- Head Dynamics Group
8. Joon W. Lim, "Aeroelastic Optimization of a Helicopter Rotor," June 1988,
(Research Engineer, U.S. Army, Ames Research Center)
- Head 2GCHAS Comprehensive Analysis Group
9. Jinsoek Jang, "Ground and Air Resonance of Bearingless Rotors in Hover and
Forward Flight," August 1988, (Chief, Rotary-Wing Division, Agency of Defense
Development, Korea)
- Head of Advanced Rotorcraft Development Program in Korea
10. David J. Haas, "Aeroelastic Characteristics of Aircraft With Circulation Control
Wings," June 1989, (Aerospace Engineer, David Taylor Naval Research Center)
- Program Head DoD Sponsored JAHUM Program: Highly visible national
program
Branch Head, System Aviation
11. Khanh Nguyen, "Application of Higher Harmonic Control to Rotors Operating
at High Speed and Maneuvering Flight," August 1989, (Aerospace Engineer,
NASA Ames Research Center)
- Former Chief Rotorcraft Dynamics Group
12. Michael S. Torok, "Rotor Loads Validation Utilizing a Coupled Aeroelastic
Analysis With Refined Aerodynamic Modeling," August 1989, (Chief Engineer,
Martime Program)
- Formerly Director Flight Sciences
13. Ki C. Kim, "Effects of Three Dimensional Aerodynamics on Blade Response and
Loads," July 1990, (Senior Research Engineer, U.S. Army, Aberdeen Proving
Ground)
14. Fredrick A. Tasker, "Nonlinear Damping Estimation From Rotor Stability Data
Using Time and Frequency Domain Techniques," May 1990, (Formerly Assistant
Professor, Mechanical Engineering, UMBC, now Research Engineer at NASA
Goddard)
15. Shmuel Fledel, "Coupled Rotor/Airframe Vibration Analysis," December 1989,
(Col. Israeli Air Force, President and CO Cyclone Co., Israel)
- Former Head All-Israel Aircraft Procurement Division
- Senior Vice President, El Al Airline
16. James W. Wang, "Aeroelastic Analysis of Helicopter Rotors with Dissimilar
Blades," November 1991, (Senior Dynamist and Designer, Sikorsky Aircraft)
- Winner of 1997 United Technologies Achievement Award (one award for all
United Technologies
- Maritime Program Attribute Manager
17. Edward C. Smith, "Aeroelastic Response and Aeromechanical Stability of
Helicopters with Elastically Coupled Composite Rotor Blades," August 1992,
(Professor, Aerospace Engineering Department, Penn State)
- Director and Founder of Rotorcraft Center of Excellence at Penn State
18. Mark W. Nixon, "Aeroelastic Analysis of a Tiltrotor Aircraft," December 1993,
(Director, U.S. Army Vehicle Technology Directorate, NASA Langley Research
Center)
19. Ranjan Ganguli, "Aeroelastic Optimization of Tailored Composite Rotor, May
1994, (Associate Professor, Aerospace Engineering, Indian Institute of Science,
Bangalore, India, Formerly Senior Engineer, Pratt & Whitney)
20. Farhan Gandhi, "Elastomeric Modeling and Rotor Dynamics", September 1995,
(Professor, Aerospace Engineering Department, Penn State)
- A Key Faculty Member, Rotorcraft Center of Excellence at Penn State
21. Venkat Srinivas, "Aeroelastic Analysis of Advanced Tiltrotor Aircraft," December
1995, (Senior Project Engineer, Ford Motor Co.)
22. Peter C. Chen, "Development of a Smart Rotor with Induced-Strain Actuation of
Blade Twist," September 1996, (Director of Advanced Technology, TechnoSciences)
- Founder and Head of Smart Structures Division
23. Anita L. Tracy, "Aeromechanical Stability Investigation of Elastically Coupled
Composite Helicopter Rotors," October 1996, (Senior Engineer, Pratt & Whitney)
24. Judah H. Milgram, "Aeromechanics Analysis of Trailing-Edge Flap Rotors,"
January 1997, (Aerospace Engineer, David Taylor Naval Research Center)
25. Hyensoo Yeo, “A Comprehensive Coupled Rotor Fuselage Vibration Analysis,”
May 1999, (Research Engineer, NASA Ames Research Center)
26. Jeanette J. Epps, “in-flight Tracking of Helicopter Rotor Blades with Tabs Using
Shape Memory Alloys,” February 2000, (Senior Engineer, DDR&E)
27. Taeoh Lee, “High Displacement Piezoelectric Trailing-Edge Flap Mechanism for
Helicopter Rotors,” December 1999, (Engineer, Bell Helicopter Textron).
28. Andreas Bernhard, “Development of Smart Rotor with Active Blade Tips
(SABT),” February 2000, (Project Manager, Sikorsky Aircraft)
29. Nikhil Koratkar, “Smart Helicopter Rotor with Piezoelectric Bender Actuated
Trailing-Edge Flaps,” December 2000, (Associate Professor, Aerospace and
Mechanical Engineering, RPI)
30. Jayant Sirohi, “Piezoelectric Hydraulic Hybrid Actuator for Potential Smart
Rotor Application,” December 2001 (Senior Engineer, Sikorsky).
31. Harsha Prahlad, “Development of Shape Memory Alloy (SMA) Torsional
Actuators for Variable Twist Tilt Rotors (VTTR) Blades,” May 2002, (Research
Scientist, Stanford Research Institute).
32. Mao Yang, “A Coupled Rotor-Fuselage Vibration Analysis for Helicopter Rotor
System Fault Detection,” December 2002 (Associate Professor, Northwest
University, China).
33. Jinwei Shen: “Comprehensive Aeroelastic Analysis of Trailing-Edge Flap
Helicopter Rotors,” December 2003 (Research Engineer, NIA/NASA-Langley).
34. Datta, Anubhav: “Fundamental Understanding and Prediction of Vibratory
Loads of a Helicopter,” August 2004, (Assistant Research Scientist, University of
Maryland).
35. Jinsong Bao: Development of Mach Scale Rotors with Composite Tailored
Couplings for Vibration Reduction,” November 2004, (Engineer, Sikorksy).
36. Beatrice Roget: “Individual Blade Control for Vibration Reduction of a
Helicopter with Dissimilar Blades,” November 2004, (Research Engineer,
NIA/NASA-Langley).
37. Ronald N. Couch: “Development of Magnetic Shape Memory Alloy Actuators
for a Swashplateless Helicopter Rotor,” May 2006 (Engineer, Swale).
38. Beerinder Singh: “Dynamics and Aeroelasticity of Hover Capable Flapping
Wings: Experiment and Analysis,” December 2006 (Engineer, Consulting
Company).
Note: Among graduated Ph. D. students two are African-Americans and three are
women students. Seven PhD graduates are currently tenure-track faculty
members and other one is non tenure-track faculty member at leading
institutions.
Guided following students in their M.S. dissertations:
1. David Matuska, "Rotor Blade Dynamic Response and Structural Optimization of
Vibration Reduction for Flap Mode," September 1983, (Senior Design Engineer,
Program Manager Advanced Dynamic Systems, Sikorsky Aircraft)
- Head of Variable Diameter Tilt Rotor (VDTR) Program, Highly visible DoD
Sponsored program
2. Brian R. Schwiesow, "Experimental Identification of Stiffness Coupling Terms in a
Composite Beam," July 1985, (Engineer, Bell Helicopter Textron)
3. Kevin W. Noonan, "Aerodynamic Design of a Helicopter Main Rotor Blade With
Consideration of Flap-Lag Flutter in Hover," December 1985, (Senior Engineer,
U.S. Army Aerostructures Directorate at NASA Langley)
4. Aaron A. Salzberg, "Experimental Identification of Stiffness Coupling Terms in
Composite Box Beams Manufactures by Thermal Expansion," December 1986,
(Engineer, Naval Research Laboratory)
5. Randy C. Barber, "Tilt-Rotor Aeroelastic Stability Using Finite Element Rotor
Modal Characteristics," June 1987, (Aeronautical Engineer, C.I.A.)
6. Hue Ngo, "Experimental Evaluation of Circulation Control Aerodynamics on a
Cylindrical Body," December 1986, (Program Head, McDonnell Helicopters)
7. Philippe Benquet, "Calculated Dynamic Response and Loads for an Advanced Tip
Rotor in Forward Flight," August 1988. (Head Flight Control Division, NATO
Helicopter Management Agency, France)
- Former Head of Rotorcraft Research in France
8. Ron M. Barrett, "Intelligent Rotor Blade and Structures Develop-ment Using
Directionally Attached Piezoelectric Crystals," May 1990. (Associate Professor,
Auburn University)
9. Pascal Picavet, "Calculated and Measured Blade Airloads on a SA349-2 Gazelle,"
Sept. 1992 (Engineer in France)
10. Pieree Y. Ouillet, "Prediction and Validation of Rotor Loads Using Nonlinear
Unsteady Aerodynamics," June 1992, ( Ministry of Defense, France)
- Former Head of Rotorcraft Research in France
11. Burtis T. Spencer, "Design and Testing of a Smart Trailing-Edge Flap using
Piezoelectric Stacks," August 1995, (Major US Air Force)
12. Kiran Singh, “Design of an Improved Shape Memory Alloy Actuator for Rotor
Blade Tracking,” May 2002, (GE)
13. Josh Ellison, “Investigation of Active Materials as Driving Elements in a
Hydraulic-Hybrid Actuator,” December 2004, (Engineer Boeing Helicopters,
Philadelphia).
14. Eric Parsons, “Investigation and Characterization of a Cycloidal Rotor for
Application to a Micro Air Vehicle,” August 2005 (Engineer, Sikorsky).
15. Anne Brindejonc, “Design and Testing of an Autonomous Payload Delivery
System: The Autobody,” December 2005, (Engineer Eurocopter, France).
16. Beverly Beasley, “A Study of Planar and Non-Planar Membrane Wing Planforms
for the Design of a Flapping-Wing Micro Air Vehicle,” May 2006, (Engineer
Arora).
17. Nitin Gupta, “Development of Test-Bed for MAV Closed Loop Flight Control,”
December 2006, (Engineer Consulting Company).
18. Brandon Fitchett, “Development and Investigation of a Flapping Rotor for Micro
Air Vehicles, June 2007.
Guided following students in their M.S. without thesis:
1. C. H. Hong (1983, Ph.D.)
2. J. Jang (1984, Ph.D.)
3. B. Panda (1984, Ph.D.)
4. A. E. Elliott (1985, Ph.D.)
5. J. Bate (1986, Engineer, Sikorsky Aircraft)
6. K. Nguyen (1986, Ph.D.)
7. B. Wunder (1986, Research Engineer, U.S. Navy, PAX River)
8. B. S. Fledel (1987, Col. Israel Air Force)
9. J. W. Lim (1987, Ph.D.)
10. K. C. Kim (1987, Ph.D.)
11. M. Torok (1987, Ph.D.)
12. J. Wang (1988, Ph.D.)
13. C. Bruner (1989, Research Engineer, U.S. Navy, Pax River)
14. J. H. Leifer (1989, Consultant)
15. E. C. Smith (1990, Ph.D.)
16. S. Dirlik (1990, Research Engineer, David Taylor R&D Center)
17. N. Kimata (1990, Lt. Col. U.S. Army)
18. R. Ganguli (1991, Ph.D.)
19. A. Tracy (1991, Ph.D.)
20. W.P. Chan (1991, Ph.D.)
21. J. Milgram (1992, Ph.D.)
22. V. Srinivasan (1992, Ph.D.)
23. J. Smith (1992, Ph.D.)
24. Peter Chen (1993, Ph.D.)
25. S. Vellaichamy (1993, Ford Motor Co.))
26. Chris Niggemeier (1993, Engineer at Learjet Aircraft)
27. Mike Bothwell (1994, Engineer at Bell Helicopter Co.)
28. Curtis Walz (1994, Engineer at Boeing Helicopter Co.)
29. Jeanette Epps (1994, Ph. D.)
30. Lazar Alon (1995, Colonel Israel Air Force)
- Chief of Rotorcraft Procurement in Israel
31. Oren Ben-Zeev (1995, Engineer at NAVAIR)
32. Luc Renouil (1995, Defense, France)
- Head of Rotorcraft Research in France
33. Andy Bernhard (1995, Ph. D.)
34. Hyeonsoo Yeo (1996, Ph. D.)
35. Nikhil Koratkar (1998, Ph. D.)
36. Mao Yang (1998, Ph. D.)
37. Jinwei Shen (1998, Ph. D.)
38. Jayant Sirohi (1998, Ph. D.)
39. Harsha Prahlad (1999, Ph. D.)
40. Anubhav Datta (2000, Ph. D.)
41. Beatrice Roget (2000, Ph. D.)
42. Matthew Tarascio (2001, Ph. D.)
43. Mary Vachery (2002)
44. Ronald Couch(2002, Ph.D)
45. Jason Pereira (2002, Ph D)
46. Beerinder Singh (2003, Ph D)
47. Atul Atulasimha (2003, Ph D)
48. Ben Hein (2005, Sikorsky)
49. A. Abhishek (2005, PhD)
50. Peter Copp (2007, PhD)
51. Moble Benedict (2007, PhD)
Currently guiding following students:
Ph.D. (Expected Graduation)
Jeff Singleton (June 2007)
Peter Copp (Dec 2008)
Jaye Falls (May 2007)
Jason Pereira (May 2007)
A. Abhishek (Dec 2007)
Benedict Moble (May 2008)
Smita Bhadra (May 2008)
M.S. (Expected Graduation)
Vikram Hrishikeshvan (2007)
Committee member for several Ph.D. and M.S. dissertations in Aerospace,
Mechanical, Electrical and Civil Engineering Departments.
Most Notable Research Contributions:
His research is characterized by: i) balance between theoretical analysis and
experimental testing with the belief that both are essential to technology
advancement, ii) multidisciplinary fundamental research covering dynamics,
aerodynamics, structures, actuators and sensors, and controls, iii) emphasis on
creativity, and vi) willingness to take on a number of new and challenging areas and
make significant contributions before most other researchers. Pioneering research
contributions were made towards the aeromechanics of composite-coupled,
bearingless, servo-flap and circulation-controlled rotors, structural health
monitoring, CFD prediction of loads. Smart structures and micro air vehicles.
Overall, the research contributions of his group show creativity, relevance and
diversity.
For research contributions, see state-of-art reviews on rotorcraft
aeromechanics as well as smart structures (Friedmann [97], Johnson [86], Anderson
[1995], Ormiston [96,99] and Loewy [97], Chopra [00, 02]).
1. Developed the very first finite element analysis of bearingless rotor blades
involving redundant-load-paths. Today it is an accepted standard in the rotarywing field.
2. Pioneered the dynamic analysis of composite rotors and showed the importance
of structural couplings on aeromechanical stability and vibratory loads. Following
this work, numerous researchers and industry have carried out in-depth studies
on this topic.
3. Pioneered the development of aeroelastic analysis of circulation control rotors and
wings. It was closely tied to the development of a revolutionary aircraft, called
the X-Wing that was funded by NASA and DARPA.
4. Developed comprehensive aeroelastic analyses for advanced rotor systems in
forward flight. Other researchers and industry vigorously followed these
developments to upgrade their analyses/codes. Synthesized numerous of his
students’ Ph. D. dissertations into a comprehensive code UMARC (University of
Maryland Advanced Rotorcraft Code) that is now widely used by industry,
academia and government laboratories (Boeing, Sikorsky, Bell, NASA Ames,
NASA Langley, U.S. Navy, ATI, Army-Aberdeen, Army-Fort Eustis, ArmyHuntsville, Praxis Technology, Navy David Taylor R&D Center, Wagner
Aeronautical, McIntosh SDI, Penn State, Arizona State University, University of
Tennessee).
5. Formulated a practical and efficient multidisciplinary aeroelastic optimization
procedure for helicopter rotors to minimize vibration and improve
aeromechanical stability. This holds enormous potential for the development of
future rotors.
6. Developed a comprehensive analysis for vibration control of helicopters to cover
severe flight conditions, including maneuvering flights. It was the very first
analysis that showed the importance of dynamic stall on the performance of
higher harmonic vibration control and actuation power. In fact, this side effect is
one of the major barriers to this vibration suppression technique.
7. Developed a new identification technique called Sparse Time Domain to identify
modal parameters from rotor stability test data. It was used successfully in the
stability test of an advanced bearingless rotor in the Glenn L. Martin wind tunnel.
8. Pioneered the development of an intelligent rotor system using smart structures
technology to minimize vibration and improve performance with embedded as
well as surface-mounted actuators. Numerous researchers from industry,
academia and research laboratories in the US and abroad are now working on
these concepts. Through collaborations with rotorcraft industry (Boeing and
Sikorsky), full-scale smart rotors are under development.
9. Formulated analyses for open-section and closed-section thin-walled coupled
composite beams, and validated these by building and testing numerous
composite beams under static and dynamic loading (including tests in vacuum
spin chamber). Many researchers now use these predictions and data as reference
for validation of their analyses.
10. Formulated the very first simple but precise model of an elastomeric damper.
This model is now widely adopted by industry and research community.
11. Developed a comprehensive aeroelastic analysis of tiltrotor aircraft including
advanced rotor and wing configurations. Now it is widely used by industry
(Boeing, Sikorsky and Bell) and NASA in the development of civil tiltrotor and
variable diameter tilt rotor (VDTR) systems.
12. Developed the basic guidelines for rotor system fault detection. Navy adopted
this methodology for a major DoD national initiative on rotorcraft health
monitoring system called JAHUM.
13. Pioneered modeling and testing of smart actuators and sensors that involve
piezoelectric, magnetostrictive and shape memory alloy materials. Many of these
tools are now widely used by other researchers.
14. Developed design studies for a swashplateless rotor with active trailing-edge
flaps for primary and vibration controls. Collaborating with NASA and industry
for the development of full-scale rotor system.
15. Developed consistent couplings of CFD with comprehensive analysis and solved
the long-standing problem of vibratory loads prediction in a high-speed flight. It
was a part of academia/government/industry loads prediction workshop.
16. Pioneered the development of Micro Hovering Air Vehicles. Two types of
configurations involving conventional rotors and flapping-wings are under
development. Also, many new revolutionary design concepts are being
developed.
Other Notable Contributions:
He played a key role in the hiring and mentoring of outstanding faculty members
at the Rotorcraft Center, and more importantly in the Department of Aerospace
Engineering as well as in the Department of Mechanical Engineering. He has been
instrumental to put together a comprehensive and vibrant graduate education
program in rotorcraft engineering at the University of Maryland. At the Rotorcraft
Center, graduate teaching had always been envisaged as a vital part of ongoing
graduate research. New courses were added through timely hiring of new faculty
members in specialized areas. Recognizing the importance of system level
education to graduate students, he initiated a design course for rotorcraft students
ten years ago. For this, he hired accomplished lecturers with industrial experience,
and also, he inspired students to participate in the American Helicopter Society’s
International Design Competition. As result of his energetic and skillful efforts, the
Maryland Design teams achieved phenomenal success in winning design
competition for first eight years in a row. In the ninth year, they won second prize.
Not only that he has been successful in developing a model education program in
rotorcraft engineering, but also he has successfully passed on his insights and
experiences to several other research groups in the Department of Aerospace
Engineering as well as in other Departments in the A. J. Clark School of
Engineering to achieve excellence in both education and research.
Most Notable Experimental Facilities:
Since the inception of the Rotorcraft Center at the University of Maryland in 1982,
many unique rotorcraft-related experimental facilities have been developed.
Many of these facilities are unparallel at any other educational institution in this
country or abroad and are now fully functional and routinely used by graduate
and undergraduate students and industry.
1. Built a special "model rotorcraft rig." This facility is used to test scaled helicopter
models in the Glenn L. Martin wind tunnel as well as on our hover stand for
evaluation of aerodynamic and dynamics characteristics. In conjunction with this
facility, we have acquired sophisticated data acquisition system and other
instrumentation. Because of this model rig, many collaborative research tasks
with industry, Army and NASA were undertaken. It is one of a kind facility at
any university.
2. Built a unique "10-ft. Diameter Vacuum Chamber.” It is a one of its kind facility in
the country to test rotor models in a rotating environment (up to 2000 RPM) and
in total vacuum (i.e. in the absence of aerodynamic forces). Today, it is one of the
busiest facilities, used by graduate students, faculty and industry to test their
rotor models in vacuum.
3. With the support of Engineering Research Center, initiated the setting-up of
Composite Research Laboratory in the Department of Aerospace Engineering. Later
on, other faculty members contributed in further enhancement of this Laboratory
into one of the most modern composite laboratories at a university. It is now
widely used by undergraduate and graduate students and faculty from several
departments as well as by industry.
4. Developed a fabrication facility to build scaled-rotor models at the Rotorcraft
Center. This saved enormous fabrication cost and time to build rotor models as
well as helped us to pursue innovative design concepts.
5. In collaboration with Mechanical Engineering, Materials and Nuclear
Engineering, and Institute for Systems Research, he initiated the setting-up of
modern smart structure facilities on this campus. Because of timely development
of these facilities, the campus won several major national programs (4 MURIs, 6
DARPAs) and many other major research grants.
6. Through a collaboration with Mechanical Engineering and Electrical and
Computer Engineering, initiated the setting-up of fabrication, testing, imagery
and navigational technology for micro air vehicles at the University of Maryland
(MURI).
Most Notable Interdisciplinary Research Programs/Centers:
1. Alfred Gessow Rotorcraft Center: Since 1982, the Rotorcraft Center at the
University of Maryland was one of the three Rotorcraft Centers of Excellence,
supported for most of the years initially by the Army Research Office (1982-95)
and then through the Army/NASA National Rotorcraft Technology Center
(1996-2006). The Center carries out multidisciplinary/interdisciplinary research
on various aeromechanics disciplines of rotorcraft systems. The core rotorcraft
program involves aerodynamics, dynamics, flight mechanics, computational
fluid dynamics, acoustics, composite structures, transmission and power trains,
flight path management, smart structures and advanced designs. In addition to
the core rotorcraft program, three major Army-sponsored national research
programs and five major DARPA sponsored research programs were wont by
the Center. Two of the Army-sponsored programs were focused on smart
structures (a URI and a MURI) and third one was focused on micro air vehicles (a
MURI). Among DARPA-sponsored projects, two were focused on application of
smart structures technology to rotorcraft system, other two were focused on
development of new smart actuators and fifth was focused on rotorcraft
acoustics prediction. The success of the Center is attributed to the timely addition
of outstanding faculty, opportunity driven research programs, high level of
productivity, comprehensive experimental facilities, demonstrated technology
transfer to industry and outstanding graduate students. The Rotorcraft Center at
the University of Maryland is one of two continuously funded centers for over
23 years in the country. The Center has a very high level of sustaining research
productivity. For example, during the past one decade, the UM Rotorcraft Center
has published more rotorcraft-related archival papers than any other institution
in this country or abroad. Another example, at the recent Annual Forums of the
American Helicopter Society, at Virginia Beach in May 2000, at Washington DC
in May 2001, at Montreal, Canada in June 2002, at Phoenix in May 2003 and at
Baltimore in June 2004, the UM Rotorcraft Center respectively presented 13, 14,
19, 17 and 20 papers out of a total of about 150 papers, the largest number from
any single institution. During the past eight years, our smart structures group
has presented more papers (over 20 papers every year) at the SPIE Smart
Structures and Materials Symposium (a premium smart structure conference)
than any other institution. Over the years, we have successfully attracted many
talented graduate students to our Center. For example, the American Helicopter
Society awards every year competitively 10 to 12 Vertical Flight Foundation
Scholarships and our students have won about 40% of total scholarships during
the past ten years. The Center has graduated many outstanding students who
have now developed into leaders in industry, government laboratories and
academia, in abroad and US. Most of our graduates are extremely productive in
their respective endeavors. Every year, the American Helicopter Society
recognizes one outstanding young contributor to the vertical flight technology
with The Francois Xavier Bagnoud Vertical Flight Award. Since the inception of this
award in 1993, our graduates have won this award about 50% of the time. Also,
the director and founder of another rotorcraft center of excellence (i.e., Penn
State) graduated from our Center.
2. Smart Structures URI: Instrumental in initiating interdisciplinary basic research
activities in smart structures in the A. J. Clark School of Engineering. In 1992, he
put together a team of faculty comprising from Aerospace Engineering,
Mechanical Engineering, Materials and Nuclear Engineering, Institute for
Systems Research (EE) and UMBC and won a five-year University Research
Initiative (URI) entitled "Innovations and Applications of Smart Structures
Technology to Rotorcraft Systems" (1992-97) from the Army Research Office. As
part of the URI, the basic elements of smart structures pertaining to rotorcraft
were developed. Much of the research was directed towards development and
refinements of: hybrid material actuators, magnetostrictive particle actuators,
electrostrictive actuators and shape memory alloys actuators; sensors such as
fiber optics; smart dampers such as electro-rheological and magneto-rheological
fluid dampers; distributed control strategies such as wavelet theories; and
analytical modeling of smart structures. Another key component of this research
was focused on the development of Froude-scaled smart rotor models:
controllable twist models incorporating embedded piezoceramic elements, and
trailing-edge flap models actuated with smart actuators, to minimize vibration.
Because of this program, there has been phenomenal growth of research
activities in smart structures on this campus. Many new smart structures
facilities that were partially supported by our program were built in different
departments. This URI seeded smart structures activities at Maryland and helped
won many recent major national programs that include:
• Our own MURI (1996-2001)
• MURI by ISR in collaboration with Harvard and Boston University "Center for
Dynamics and Control of Smart Structures" (1997-2001)
• SMSRC: Smart Materials and Structures Research Center (Mech. and Aero.
Engineering)
• DARPA: High Performance Actuators Research (UM-Materials in collaboration
with MIT, Minnosota and Washington)
• DARPA: Full-Scale Smart Rotor Development (1995-98), (Team members:
McDonnell Douglas, Maryland, Xinetics and Memry).
• JAHUM: Navy's Rotor Head Structural Health Monitoring (1995-2000).
3. Smart Structures MURI: Following the success of our smart structures URI, we
won a Multidisciplinary University Research Initiative (MURI) entitled
"Innovative Smart Technologies for an Actively Controlled Jet-Smooth Quiet
Rotorcraft" (1996-2001). For this, we led a team of researchers from the University
of Maryland (Aerospace and Mechanical Engineering), Penn State, Cornell, and
University of District of Columbia. This MURI program further expanded the
smart structures technology base by examining new innovative actuators,
sensors and control strategies, and addressed high-payoff applications to
rotorcraft to suppress external/internal/ transmission noise and vibration. Most
importantly, this research program contained the next and vital step in the
practical application of smart structure technology to suppress noise and
vibration in full-scale systems by building Mach-scaled rotor models and testing
them on our hover stand and in the Glenn L. Martin wind tunnel. Today, we
have established a leadership in the smart structures discipline. For example, at
the recent International Conference on Adaptive Structures and Technologies
(ICAST) held at College Park, MD (October 2001), every other paper had its roots
in the University of Maryland. During the past eight years, Maryland has
contributed more papers in smart structures discipline than any other institution
in this country or abroad. As a result of this, the A. J. Clark School of Engineering
has won many new initiatives and programs:
• Small Smart Systems Center (Campus Initiative)
• DARPA: Full-Scale Smart Rotor Demonstration Program (1998-02),
(Team members: Boeing, Maryland, UCLA, MIT).
• DARPA: Compact Hybrid Actuators Program (CHAP) (2000-03),
(Team Members: CSI and Maryland)
• MURI: Ferro-Magnetic Shape Memory Actuators (2001-06)
(Team Members: Maryland, Minnesota and VPI)
• DARPA: Compact Hybrid Galfenol Actuator Program (2003-05)
• MURI: Galfenol Materila Development (2006-11)
(Team Members: Minnesota, VPI, OSU)
4. Micro Air Vehicle MURI: Following the success of our smart structures
programs, we won a new MURI entitled "Micro Hovering Air Vehicles:
Revolutionary Concepts and Navigational Advancements" (2004-2009). For this,
we led a team of researchers from the University of Maryland (Aerospace,
Mechanical and Electrical & Computer Engineering), Australian National
University (ANU), and North Carolina A&T University (NCAT). The objective of
this interdisciplinary/multidisciplinary research program is to rapidly accelerate
the development of the next generation hovering micro air vehicles (MAVs).
They will be equipped with biologically inspired navigation, guidance and
collision avoidance algorithms in support of a variety of DOD applications. Key
scientific barriers towards building a highly maneuverable, long endurance and
efficient hovering system will be overcome by building on the expertise of UM in
the design and development of efficient micro hovering air vehicles and image
processing, of ANU in the use of revolutionary insect-based visual guidance
techniques, and of NCAT in the manufacturing of multi-functional materials and
composite structures technology.
Professional Societies Membership:
AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS, Fellow
AMERICAN HELICOPTER SOCIETY, Fellow
AERONAUTICAL SOCIETY OF INDIA, Fellow
AMERICAN SOCIETY FOR MECHANICAL ENGINEER, Fellow
Service: Professional
JOURNAL OF THE AMERICAN HELICOPTER SOCIETY
Associate Editor, 1987-91
JOURNAL OF AIRCRAFT
Associate Editor, 1987-cont.
Guest Editor, December 1990 and January 1991 Issues.
Member Editorial Advisory Board (2002-cont.)
VERTICA, THE INTERNATIONAL JOURNAL OF ROTOR-CRAFT AND POWERED
LIFT AIRCRAFT
Member Editorial Advisory Board, 1987-91.
SMART MATERIALS AND STRUCTURES JOURNAL
Member Editorial Board, 1994-2000).
Guest Editor, February 1995 Issue.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Associate Editor, 1997-cont.
SADHANA, AN INTERNATIONAL JOURNAL IN ENGINEERING SCIENCES
Member Editorial Board, 1991-95.
AMERICAN HELICOPTER SOCIETY
Dynamics Committee Member, 1982-1986, 1991-95, 1999-2002
Deputy Chair Dynamics Committee, 1984-1986, 1991-93.
Chairman Dynamics Committee, 1993-95.
Member AHS Award Committee, 1991-94
Member Technical Council, 1994-97
Member Education Committee, 1995-cont.
Chairman Education Committee, 1995-97
Member Vertical Flight Scholarship Committee, 1996-00.
Technical Advisor Federal City Chapter, 1992-cont.
Faculty Advisor, UM Student Chapter, 1983-93
Member Test and Evaluation Technical Committee, 2003-cont.
AMERICAN SOCIETY OF MECHANICAL ENGINEERS
Member Technical Committee on Adaptive Structures & Materials, 1993-cont.
Deputy Chairman Adaptive Structures & Materials Committee, 1996-98
Chairman, Adaptive Structures & Materials Committee, 1998-00
Member Aerospace Division Executive Committee, 2000-04
Chairman of Aerospace Executive Committee, 2002-03
Member Spirit of St. Louis Medal Selection Committee, 2000-05.
Member Guggenheim Medal Award Selection Committee, 2003-cont.
Guggenheim Medal Award Selection Committee, Vice-Chair (04), Chair (05)
Member Congressional Aviation Committee, 2002-cont.
Member Adaptive Structures Prize Selection Committee, 2002-cont.
AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS (AIAA)
Member of Committee on Structural Dynamics, 1994-97, 2004-cont.
Member of Technical Committee on Adaptive Structures, 1997-cont.
AIAA/ASME/ASCE/ACS/AHS STRUCTURES, STRUCT-URAL DYNAMICS AND
MATERIALS CONFERENCE AND ADAPTIVE STRUCTURES FORUM
32nd Conf., Baltimore, MD, April 1991, Organizer Work-in-Progress Sessions
34th Conf. San Diego, CA, April 1993, Member Organizing Committee, Rotorcraft
Session Chairman
35th Conf., Hilton Head, SC, April 1994, Member Organizing Committee, Session
Chairman
36th Conf., New Orleans, April 1995, Member Organizer Committee, Organizer
Work-in-Progress Sessions
37th Conf., Salt Lake City, UT, April 1996, Technical Chairman Adaptive
Structures Forum
38th Conf., Kissimmee, FL, April 1997, General Chairman Adaptive Structures
Forum
39th Conf., Long Beach, CA, April 1998, Chair for 3 Sessions
40th Conf., St. Louis, MO, April 1999, Chair for 3 Sessions
41st Conf., Atlanta, GA, April 2000, Session Chair
42nd Conf. Seattle, WA, April 2002, Chair for 3 Sessions
43rd Conf. Denver, CO, April 2003, Session Chair
SPIE’s INTERNATIONAL SYMPOSIUM ON SMART STRUCTURES AND
MATERIALS
1993 Conf., Albuquerque, NM, Feb. 1993, Session Organizer
1st Symposium, Orlando, FL, Feb. 1994, Session Organizer
2nd Symposium, San Diego, CA, Feb. 1995, Technical Chairman Smart Structures
& Integrated Systems Conf.
3rd Symposium, San Diego, CA, Feb. 1996, Technical Chairman Smart Structures
& Integrated Systems Conf., Symposium Executive Co-Chair
4th Symposium, San Diego, CA, Feb. 1997, Symposium Executive Co-Chair
5th Symposium, San Diego, CA, Feb. 1998, Symposium Executive Chair
6th Symposium, Newport Beach, CA, March 1999, Symposium Executive Chair
7th Symposium, Newport Beach, CA, March 2000, Session Chair and Member
Technical Organizing Committee
8th Symposium, Newport Beach, CA, March 2001, Session Chair and Member
Technical Organizing Committee
12th Symposium, San Diego, March 2004, Member Strategic Committee
WORKSHOP ON DYNAMICS AND AEROELASTIC STABILITY MODELING OF
ROTOR SYSTEMS (ARO)
1st Workshop, Georgia Tech, Dec. 85, Session Chairman and Member Organizing
Committee and Panel Member for Future Research Session
4th Workshop, University of Maryland, Nov. 1991, Technical Chairman
SECOND INTERNATIONAL CONFERENCE ON ROTORCRAFT BASIC RESEARCH
University of Maryland, College Park, MD, Feb. 1987, Technical Chairman
AMERICAN HELICOPTER SOCIETY
41st Annual Forum, Fort Worth, TX, May 1985, Dynamics Session Organizer &
Chairman
2nd Decennial Specialists’ Meeting on Rotorcraft Dynamics, NASA Ames, Moffett
Field, CA, Nov. 1984, Session Chairman & Organizer
AHS Technical Specialists Meeting on Advanced Rotorcraft Technology and Life
Saving Activities, Utsunomiya, Japan, Nov 2002, Organizing Committee Member
61st Annual Forum, Grapevine, TX, June 2005, Test & Evaluation Sessions
Organizer & Chairman
EUROPEAN ROTORCRAFT FORUM
17th Forum, Berlin, Germany, Sept. 1991, Dynamics Session Chairman
23rd Forum, Dresden, Germany, October 1997, Dynamics Session Chairman
25th Forum, Rome, Italy, Oct. 1999, Dynamics Session Chairman
26th Forum, Hague, Netherlands, Sept. 2000, Dynamics Session Chairman
INTERNATIONAL CONFERENCE ON ADAPTIVE STRUCTURES
9th Conf., Boston, MA, November 1998, Member Organizing Committee
10th Conf., Paris, France, November 1999, Member Organizing Committee
11th Conf., Nagoya, Japan, November 2000, Member Organizing Committee
12th Conf., College Park, MD, November 2001, General Chair
13th Conf., Potsdam, Germany, November 2002, Member Organizing Committee
14th Conf., Seoul, Korea, October 2003, Member Organizing Committee
15th Conf., Bar Harbor, NH, October 2004, Member Organizing Committee
ITR METHODOLOGY ASSESSMENT WORKSHOP (ARMY)
NASA Ames, July 1988, Panel Member (Future Research Rotor Dynamics)
INTERNATIONAL SYMPOSIUM ON AEROSPACE SCIENCES AND ENGINEERING
Bangalore, India, December 1992, Organizing Committee Member
WORKSHOP ON SMART STRUCTURES (ARO)
1st Workshop, Arlington, TX, Sept. 1993, Organizing Committee Member
2nd Workshop, University of Maryland, Sept. 1995, General Chairman
3rd Workshop, VPI & State University, Sept. 1997, Organizing Comm. Member
4th Workshop, Penn State, August 1999, Organizing Committee Member
US-EUROPEAN COMPETITION & WORKSHOP ON MICRO AIR VEHICLES
(MAVs)
1st Workshop, Elmau Castle, Germany, Sept. 2005, Organizing Comm. Member
SPIE FAR EAST & PACIFIC RIM SYMPOSIUM ON SMART MATERIALS,
STRUCURES & MEMS
Bangalore, India, December 1996, Organizing Committee Member
ARMY SCIENCE BOARD
Member, 1997-2002
Study Group: Army After Next: Feasibility Study of Autonomous Cargo
Rotorcraft (1997-98)
Member Small Arms Industrial Base Study (Senate Investigation), (1999)
Member US Army Achievement Awards (1999)
Member ASB Summer Study: Mobility Operations (1999-2000)
Member Joint Transport Rotorcraft Review Committee (2000)
Member ASB Summer Study: Power Issues (2000-2001)
Member Navy Aging Aircraft Review Committee (2001)
Member Future Aviation for Army Study, (2002)
BOARD of ARMY SCIENCE and TECHNOLOGY
Technology Challenges for Micro Air Vehicles, Organizing Member, Dec 2004.
DoD AIR PLATFORM TARA REVIEW
Member Review Committee (2006)
NAE: NASA DECADEL SURVEY OF CIVIL AERONAUTICS 2005-06
Member Steering Committee
Member Structures & Materials Committee
NASA AMES RESEARCH CENTER
Member Army/NASA Rotorcraft Peer Review Committee, August 1999, August
2000
Member Rotorcraft R&T Road Map Committee, 2004
DAIMLER CHRYSLER
Member Peer Review Committee for Actuators & Sensors (S&T), Stuttgart,
Germany, December 1999
DAVID W. TAYLOR NAVAL SHIP RESEARCH & DEVELOPMENT CENTER
Consultant to X-Wing Project (1983-1990)
Consultant Tail Rotor Performance of Navy Helicopters (1991-94)
Consultant Rotor Head Fault Detection (1994-96)
McDONNELL DOUGLAS HELICOPTER COMPANY
Consultant for Design Development of a Smart Rotor (1994-01)
KAMAN AEROSPACE CORPORATION
Consultant for Tab-Actuated Flap Rotor Development (2004-05)
PROGENY SYSTEMS CORP
Consultant for Development of Rotorchute (2003-06)
TECHNO-SCIENCES
Consultant for Smart Rotor Development for Swashplateless System (2003-06)
FlexSys Inc.
Consultant for Parametric Design Studies for Primary Rotor Controls with
Conformal Trailing-Edge Flap (2006)
DOD ROTARY WING TECHNOLOGY DEVELOPMENT APPROACH FOR YEAR
2000 & YEAR 2005
Committee Member, 1994-96.
Member Rotorcraft R&T Roadmap for Army, 2004
ARMY RESEARCH OFFICE, NSF, NRC, AFOSR, NASA
Reviewer Research Proposals, 1983-cont.
Service: University
CAMPUS
Senate Member, 1985-88.
Elected Member Graduate Council, 1989-92, 1996-99, 2001-05
Member Senate Committee on Education Affairs, 1996-97.
Member Senate Adjunct Committee on Libraries & Computers, 1987-88.
Member Recruitment of Provost of Academic Affairs (2001)
Member Recruitment of Vice President & Dean Grad Studies (2001-02)
Member NSF Major Research Instrumentation (MRI) Selection, Dec 2004
Member Graduate Council Faculty Affairs Committee, Nov. 2004-05
Member Research Council, 2004-cont.
A. J. Clark School OF ENGINEERING
Chairman PCC Committee, 1983-85.
Member Extension of Engineering Education at UMBC Committee, 1982-83
Member APT Committee, 1990-92, 1996-00
Chairman College APT Committee, 1999-00
Member Staff Award Committee, 1997
Member Evaluation & Appointment of Dean Destler, 1998
Member Recruitment of Dean of School of Engineering, 1999-2000
Member Research Award Guidelines Committee, 2000
Member Promotion & Tenure Seminar Group 1999-cont.
Member Dean’s Faculty Advisory Group, 2002-cont.
Member Minta-Martin Chair Professor Selection, Nov. 2004
Alfred Gessow Rotorcraft Center
Director, 1991-cont.
DEPARTMENT OF AEROSPACE ENGINEERING
Acting Chairman, 1988-90
DEPARTMENT OF AEROSPACE ENGINEERING
Member of the Graduate Committee, 1982-94, 1996-cont.
Chairman, Graduate Committee, 1987-92
Chairman Faculty Search Committee (Rotorcraft & Smart Structures), 1992-93
Department Reorganization Committee, 1994
Chairman Aeroacoustics Faculty Search Committee, 1996-97
Member Executive Committee, 1994-95, 96-cont.
Member Department Internal Review Committee, 1995
Member Chairman Selection Committee, 1996
Member Business Administrative Search Committee, 1995
Member Merit Review Committee, 1995-97, 1999-cont.
Chairman Recruitment Committee for Research Engineer, 1996
Member Academic Coordinator Search Committee, 1997-98
Member Department Plan of Organization Committee, 1998
Member Search Committee (Small Smart Devices), 1999
Member Department Hall of Fame Selection Committee, 1998-cont.
Chairman Flight Dynamics & Control Faculty Search Committee, 1999
Member Graduate Requirements Review Committee, 2000-01
Member Search Committee (Nano-technology and smart devices), 2001
Chairman Department Internal Review (Self-Study) Committee, 2002
Chairman Department Chair Review Committee, 2002
Member of Search Committee for Langley Professor, 2003-04
Member of Search Committee for Small Smart System Faculty, Sept 04-cont.
Member Department Chair Search Committee, 2006
Chairman Faculty Search Committee, 2005-cont.
NATIONAL NEEDS FELLOWSHIP PROGRAM
Committee Member, 1988 - 2000, (About 25 fellowships for women and minority
students)
SIGMA GAMA TAU SOCIETY
Faculty Advisor, 1999-cont.
Service:Community Service
DUVAL HIGH SCHOOL (P. G. COUNTY)
Member of School Advisory Board, 1989 - 2003
SIKORSKY MINORITY FELLOWSHIP FOR UNIVERSITY OF MARYLAND
Instrumental for 3 Minority Fellowships for engineering students starting from 1993.
Short Courses:
One week course on "Helicopter Aerodynamics and Aeroelasticity" taught at the
following organizations (with Professor Alfred Gessow):
Edwards Air Force Base, California, August 1983
The University of Kansas, Lawrence, Kansas, August 1983
NASA Langley Research Center, Hampton, Virginia, Jan. 1984
Patuxent Naval Air Center, Maryland, January 1984
Singer-Link, Binghampton, New York, June 1985
One week course on "Helicopter Dynamics" taught at McDonnell Douglas
Helicopter Company, June 1990.
One Week Short Course on Smart Materials and Structures Technology (with
Balachandran, Baz, DeVoe, Pines, Sirkis, Wereley), University of Maryland, June 1-5,
1999
One Day Short Course on Smart Structures Theory (with Norman Wereley), at 1998,
1999 and 2000 SPIE Smart Structures Symposiums
Visiting Professor at Australian Defense Academy, Canberra, One week Short
Course on Helicopter Theory, July 1998
Visiting Professor at Nanjing Aeronautics and Astronautics University, China, One
Week Short Course on Smart Structures Theory and Applications, December 1998.
Visiting Professor at Kunkuk University,Korea, One Week Short Course on
Helicopter Dynamics Theory, February 2007.
External Research Support:
1. Establishment of Center for Rotorcraft Education and Research (U.S. Army
Research Office), Task Leader for five tasks out of twelve total research tasks,
(Principal Investigator: Prof. Alfred Gessow), Five years award (1982-87): (Total
Award: $4.6M) Chopra’s Tasks: $1.8M.
2. Gust Response of Articulated and Hingeless Rotors in Hover and Forward Flight,
(NASA/Langley), 3 years (1983-86): $167K
3. Study of Wake-Vortex Induced Upset of a Helicopter, (Department of
Transportation, FAA), 2 years (1984-86): $75K
4. Unsteady Interaction of a Jet and Boundary Layer, (Navy David Taylor Research
Center), 1 year (1985-86): $35K
5. Completion of Helicopter Model Test Rig, (DOD/Army Research Office), 1 year
(1984-85): $250K
6. Aeroelastic Stability of Bearingless Rotors in Forward Flight (NASA Ames
Research Center), 8 years (1986-95): $413K
7. Aeroelastic Optimization of a Helicopter Rotor, (NASA Langley Research Center),
6 years (1986-92): $283K
8. Aeroelastic Stability Analysis of a Gimbaled Rotor, (NASA Langley Research
Center), 2 years, (1988-90): $75K
9. Instrumentation for Rotorcraft Model Testing, (DOD/Army Research Office), 1
year (1988-89): $130K
10. A Comprehensive Rotorcraft Analysis Code, (NASA Ames Research Center), 1
year (1989-90): $44K.
11. Center for Rotorcraft Education and Research, (Army Research Office), Task
Leader for 3 out of 9 Research Tasks, Principal Investigator: Prof. Alfred Gessow
for first 4 years and Chopra for last year, 5 years (1987-92): (Total $2.3M),
Chopra’s Tasks: $1M
12. Dynamic Analysis of an Advance Tiltrotor Airplane, (NASA Langley Research
Center), 3 years (1991-94): $195K
13. Fourth Workshop on Dynamics and Aeroelastic Stability Modeling of Rotorcraft
Systems, (Army Research Office), 1 year (1991-92): $20K
14. NASA Training Grant for a Graduate Student, (NASA), 2 years (1991-93): $44K
15. University Research Initiative (URI): Smart-Structures Technology: Innovations and
Applications to Rotorcraft Systems, (Army Research Office), (Team of 14 faculty
members from Aerospace, Mechanical, Materials, ISR and UMBC, supported over
20 graduate students), 5 years (1992-97): $1.8M
16. Center for Rotorcraft Education and Research, (Army Research Office &
Rotorcraft Industry Consortium of Sikorsky, Bell, Boeing and McDonnell
Douglas), (Other Team Members: Leishman, Celi, Lee and Vizzini, supported over
15 graduate students), 3 years, (1992-95): $1.75M
17. International Travel to attend Symposium at I. I. Sc. Bangalore, India, (National
Science Foundation), 6 Months (1992-93): $8.3K
18. Instrumentation for Center for Rotorcraft Education and Research, (Army
Research Office), (Co-PIs: Leishman and Vizzini), 1 years, (1993-94): Total Award:
$446K, Chopra’s Share: $200K
19. Augmentation Center for Rotorcraft Education and Research, (Army Research
Office), (Other Team Members: Leishman, Celi, Lee, Vizzini, Baeder, Wereley,
supported over 10 graduate students), 2 years (1994-96), $1.03M
20. Evaluation of Methodology for Testing and Analysis of Advanced Rotors, (NASA
Ames Research Center), 6 years (1993-99): $358K
21. Helicopter Vibration Reduction with Dynamically Tuned Blade Pitch Links,
(NASA Ames Research Center), 2 years (1994-96): $80K
22. Health Monitoring of a Rotor Head System, (Navy David Taylor Research
Center), 3 years (1994-97): $304K
23. Smart Materials and Structures Development, (McDonnell Douglas Helicopter
Co.), 2.5 years (1994-97): $170K
24. Second Workshop on Smart Structures, (Army Research Office), 1 year (1995-96):
$20K
25. Development of High Force, High Displacement Actuators, (Army/Ames), 1 year
(1995-96): $30K
26. Center for Rotorcraft Education and Research, (National Rotorcraft Technology
Center), (Other Team Members: Leishman, Celi, Vizzini, Baeder, Wereley, Pines,
15 supported graduate students), 5 years (1996-2001): $4.62M,
27. NASA Graduate Student Fellowship for Jeanette Epps, (NASA), 3.5 years (199699), $74K
28. DURIP: Instrumentation for Structural Integrity of Rotorcraft Systems, (Army
Research Office), (Co-PI with Wereley, Pines and Sirkis), 1 year (1996-97): (Total
Award $289K), Chopra’s Share: $96K
29. Multidisciplinary University Research Initiative (MURI): Innovative Smart
Technologies for an Actively Controlled Jet-Smooth Quiet Rotorcraft, (Army
Research Office), (Team Members from UM, Penn State, Cornell and UDC, 18
faculty, 21 research tasks, 21 supported graduate students) 5 years (1996-2001):
$5M
30. Methodology Development for Helcopter Rotor System Health and Usage
Monitoring, (Naval Surface Warfare System: Carderock Division), 5 year (19982003), $531K
31. Smart Material and Structures Development, (Boeing Mesa), 3 years (1998-2001),
$626K
32. Mach Scaled Smart Rotor Model, (Boeing Mesa), 5 years (1996-2001), $300K
33. Smart Rotor Development, (Sikorsky), 2 years (1996-98), $100K
34. IPA for Dr. Roichenbach, (NASA Ames Research Center), 2 years, (1998-2001),
$425K
35. Evaluation of Methodology for Testing and Analysis of Advanced Rotor Systems,
(NASA Ames Research Center), 6 years (1999-05), $1.218M
36. Tailored Composite Couplings in Helicopter Blade, (Sikorsky), 5 years, (19992004), $320K
37. IPA for George Price, (NASA Ames Research Center), 1 years, (2000-2), $290K
38. Center for Rotorcraft Education and Research, (NRTC), (Other Team Members:
Leishman, Celi, Schmitz, Baeder, Wereley, Pines, Etkins, Shapiro and Baz, 15
supported graduate students), 5 years (2001-2006): $4.64M.
39. Research Augmentation for Center for Rotorcraft Education and Research
(NRTC), 4 years (2002-2005), 400K
40. Whirl Flutter of Two-Bladed Propellor/Pylon System: Evaluation of
Methodology for Testing and Analysis of Advanced Rotor Systems, NASA
Langley Research Center, one year, (2001-2), $40K.
41. DURIP: Instrumentation for Vibration Control, Structural Integrity and Stability
Augmentation Studies of Rotorcraft Systems, (Army Research Office), (Co-PI with
Wereley and Pines ), 1 year (2001-02): (Total Award $185K), Chopra’s Share: $62K
42. Morphing of rotor blades with magnetic shape memory alloy actuators to actively
control vibration and performance, ONR, (MURI Task, PI: Wuttig), 1 years, (20012), $100K.
43. Development of Swashplateless Rotor Using Magnetic Shape Memory Alloys
Actuators, ARO/DARPA, 2 years, (2001-4), $375K.
44. IPA for George Price, (NASA Headquarters), 4 years, (2002-6), $558K
45. Neural Network Based Robust Individual Blade Controller, (NASA Ames), 2 year
(2002-4), $45K
46. Supplemental UAV and Swashplateless Research, (NRTC), 1 year, (2003-2004),
$253K.
47. Active Pitch Link Technology for Rotorcraft, (MIPS/Techno-Science), 1 year
(2003-04), $123K
48. MURI: Micro Hovering Air Vehicles: Revolutionary Concepts and Navigational
Advancements, (Army Research Office), Team Members from UM (Aero, Mech
and EE), North Carolina A&T and Australian National University, 17 faculty, 24
research tasks, 22 supported graduate students) 5 years (2004-2009): $5.25M
49. Design Studies of a Heavy Lift Rotorcraft, (NASA Ames), 1 year (2004-05), $51K
50. IPA for Dr. Roichenbach, (FAA), 1 years, (2004-05), $38K
51. Active Pitch Link Technology for Rotorcraft (MIPS/Techno-Science/ARO), Phase
II STTR, 2 years (2004-06), $400K
52. Development of Swashplateless Rotor System
Huntsville), SBR Phase II, 2 years (2004-06), $300K
(Techno-Science/Army
53. Helicopter Quieting Program (DARPA/ARO), Team Members UM (Baeder,
Chopra, Schmitz) and Stanford Uni., 2 years (2004-06) (Total $3.4M), Chopra Share:
$500K.
54. Evaluation of Test Techniques and Prediction Methodologies for Rotorcraft,
(NASA Ames Research Center), 3 years (2005-08), $535K
55. Aerodynamics and Dynamics of High Speed Coaxial Rotor Systems, (ONR), 3
years, (2006-09), $575K.
56. Development of Servo-Flap CFD Analysis: (CRI), 3 years, (2005-08), 150K.
57. Design of Disaster and Emergency Response Module (CRI), 2 years (2005-08),
160K.
Total External Support = $38.42 Million
Internal Research Support:
These include support from MM (Minta-Martin Aeronautical Research Fund), ERC
(Engineering Research Center), Graduate School and Dean (College of
Engineering).
1. Dynamic Stability of a Composite Blade Using Finite Element Analysis, (MM), 1
year (1982-83): $20K
2. Flight Stability Studies of Helicopters - Mast Bumping, (MM), 1 year, (1984-85):
$11K
3. Procurement of Autoclave for Composite Laboratory, (ERC), 1 year (1985): $109K
4.
Analytical and Experimental Investigation of Circulation
Aerodynamics of Cylindrical Bodies, (MM), 1 year, (1985-86): $11K
Controlled
5. Identification of Stiffness Coupling Terms for Composite Blades, (MM), 1 year,
(1986-87): $12K
6. Dynamic Testing of Rotor Models in Vacuum Chamber, (MM), 1 year (1988-89):
$15K
7. Cost Share: Instrumentation for Rotorcraft Model Testing, (Graduate School &
Dean), 1 year (1988-89): $60K
8. A Comprehensive Rotorcraft Analysis Code, (MM), 1 year (1989-90): $12K.
9. Validation of UMARC (University of Maryland Advanced Rotorcraft Code), (MM),
1 year, (1990-91): $17K
10. A Space Initiative in the Department of Aerospace Engineering, (MM), 1 year,
(1990-91): $45K
11. Cost Share URI: Smart-Structures Technology: Innovations and Applications to
Rotorcraft Systems, (Graduate School, Dean & ERC), 3 years (1992-95): $150K
12. Cost Share: Center for Rotorcraft Education and Research, (Graduate School,
Dean & ERC), 3 years, (1992-95): $300K
13. Cost Share: Instrumentation for Center for Rotorcraft Education and Research,
(Graduate School and Dean). 1 years, (1993-94): $95K
14. Cost Share: Augmentation for Center for Rotorcraft Education and Research,
(Graduate School, Dean & ERC), 2 years, (1994-96): $50K
15. Development of Smart Structures Technology, (MM), 4 years (1991-96): $225K
16. Cost Share MURI: Innovative Smart Technologies for an Actively Controlled JetSmooth Quiet Rotorcraft 5 years, (1996-2001): $175K
17. Cost Share: Center for Rotorcraft Education and Research, (Graduate School,
Dean & Department) 5 years, (1996-2000): $300K
18. DURIP: Instrumentation for Structural Integrity of Rotorcraft Systems, (Graduate
School, Dean and Aero & Mech Dept.), (Co-PI with Wereley, Pines and Sirkis), 1
year, (1996-97): Total $100K, Chopra’s Share: $25K
19. Travel Support, (Minta-Martin), 3 years, 1997-2000, $6K
20. Cost Share for Center for Rotorcraft Education and Research, (Graduate School
and Dean), 5 years, (2001-6): $550K
21. DURIP: Instrumentation for Vibration Control, Structural Integrity and Stability
Augmentation Studies of Rotorcraft Systems, (Army Research Office), (Co-PI with
Wereley and Pines ), Cost Share by Graduate School, Dean and Department, 1
year (2001-02): Total $115K), Chopra’s Share: $38K
22. Micro Air Vehicle Development, one year (2002-3), $35K
23. High Speed Computation Facility, (2004), Dean $40K
24. MURI: Cost Share from Graduate School and Dean, 5 years, (2004-9): $250K
Total Internal Support = $2.55 Million