THEMIS Mission PDR
Project Overview and Status
Peter R. Harvey
University of California - Berkeley
THEMIS Mission PDR/CAR
1
UCB, November 12-14, 2003
Agenda
Agenda
•
•
•
•
•
Science Overview
Mission Overview
Programmatic Overview
Organization
Review
THEMIS Mission PDR/CAR
2
UCB, November 12-14, 2003
Science Overview
Science Overview
•
Purpose
To understand the onset and macroscale (1-10 Re) evolution of
magnetospheric substorms.
•
Capabilities
Will provide the first measurements of substorm starting location
Will provide the first measurements of substorm evolution
•
Collaborating Institutions (Hardware)
University of California (UCB, UCLA)
Swales Aerospace Inc. (SAI)
Goddard Space Flight Center (GSFC)
University of Colorado (LASP)
THEMIS Mission PDR/CAR
Technical University of Braunschweig (TU-BS)
Institut fur Weltraumforschung der OAW (IWF)
CETP
University of Calgary
University of Alberta
3
UCB, November 12-14, 2003
Mission Overview
Mission Overview
•
Launch
Vehicle:
Injection:
Date:
•
Space Segment
Spacecraft:
Instruments:
Orbit Period(s):
Orientation:
•
5 Spinning probes with fuel for orbit/attitude adjust
3-Axis E-Field, B-Field
3-D Ion & Electron Particle Detectors
1, 2 and 4 days
Ecliptic normal
Ground Segment
Observatories:
•
Delta II, Eastern Range
1.1 x 12 Re, 9 degrees inclination
August 2006
20 Northern of All Sky Imaging and Mag Field
Operations
Phases:
Lifetime:
THEMIS Mission PDR/CAR
I&T, L&EO (2 mo), Campaigns (Dec-Mar), Deorbit
2 years
4
UCB, November 12-14, 2003
Programmatic Overview
Programmatic Overview
•
PI Mode
PI Team Provides Space, Ground, Data Segments
PI Team Provides Cost, Schedule, Performance Assurance
PI Team Provides Education/Public Outreach
•
Cost and Schedule Caps
Single Cost Cap for the Mission
Launch no later than March 2007
•
Performance Assurance
MIDEX Quality Requirements
 Implementation Strategy
Use Heritage Instrumentation
Coordinate Common Buy Parts
Keep Probe/Probe Carrier Simple and Robust
THEMIS Mission PDR/CAR
5
UCB, November 12-14, 2003
Organization
Explorers Office
Frank Snow, Mission Mgr
U.C. Berkeley
KSC
Vassilis Angelopoulos, PI
Peter Harvey, PM
Tammy Harrington,
Mission Integ Mgr
Swales Aerospace
Mike Cully
U.Colo/LASP
Bob Ergun
CETP
Alain Roux
B. De la Porte
GSFC/GNCD
Karen Richon
TU-BS
Uli Auster
Univ of Calgary
Eric Donovan
Univ of Alberta
J. Samson
IWF
Werner Magnes
THEMIS Mission PDR/CAR
UCLA
Chris Russell
THEMIS Organization Chart
Subcontracts/Agreements
Phases BCD
6
UCB, November 12-14, 2003
Organization
THEMIS Project
1. Management,
Science,
Systems Eng.
2. Space
Segment
Development
1.1
Management
2.1 Instruments
1.2 Science
2.2 Spacecraft
1.3 Systems
Engineering
3. Ground
Segment
Development
3.1 Mission
Operations
Center
3.2 Science
Operations
Center
4. Mission Ops
& Data Analysis
5. Education &
Public Outreach
4.1 Mission
Operations
4.2 Data Analysis
3.3 Ground
Based
Observatories
THEMIS Work Breakdown
Structure
THEMIS Mission PDR/CAR
7
UCB, November 12-14, 2003
Organization
Management, Science and
Systems Engineering
Program
Management
Peter Harvey
Management Support
K. Harps
Finances
M. Larson
Purchasing
M. Giordano
Documentation
D. Meilhan
Scheduling
A. Shutkin
Administration
Facility Support
J. Cooks
Contracts
J. Keenan
Purchasing
G. Davis
Accounting
J. Williams
Travel
J. Jones
Personnel
UCB Sponsored Projects
D. Weldon
Contracting
Systems
Engineering
Science
V. Angelopoulos
Ellen Taylor
Electrical
Ellen Taylor
Mechanical /Thermal
Paul Turin
Chris Smith
EMC/ESC/MAG
Robert Snare (UCLA)
Quality & Safety
Ron Jackson
Science Support
Bonnell, John
Carlson, Chuck
Delory, Gregory
Frey, Harald
Hull, Art
Larson, Davin
Lin, Robert
Mende, Steven
Moreau, Thomas
Mozer, Forrest
Parks, George
Peticolas, Laura
Phan, Tai
Temerin, Michael
Parts
Jorg Fischer
THEMIS WBS 1.0
THEMIS Mission PDR/CAR
8
UCB, November 12-14, 2003
Organization
Instruments
Instrument
Data Processor
Unit (IDPU)
Electric Field
Instrument
(EFI)
Robert Abiad
Peter Berg
Heath Bersch
Dorothy Gordon
Frank Harvey
Selda Heavner
Jim Lewis
Jeanine Potts
Chris Scholz
Kathy Walden
Forrest Mozer
John Bonnell
Greg Delory
Art Hull
Bill Donakowski
Greg Dalton
Robert Duck
Mark Pankow
Dan Schickele
Stu Harris
Hilary Richard
ElectroStatic
Analyser
(ESA)
Charles Carlson
M. Marckwardt
Bill Elliott
Ron Herman
Solid State
Telescope
(SST)
Fluxgate
Mag
(FGM)
Robert Lin
Davin Larson
Ron Canario
Robert Lee
T. Moreau
TUBS/IWF
Uli Auster
K.H. Glassmeier
W. Magnes
Mag
Booms
Search Coil
Mag
(SCM)
CETP
Alain Roux
Bertran de la Porte
Olivier Le Contel
Christophe Coillot
Abdel Bouabdellah
Instrument
I&T
Rick Sterling
LASP
Robert Ergun
Aref Nammari
Ken Stevens
Jim Westfall
Hari Dharan
Y. Kim
Tien Tan
Bill Tyler
THEMIS WBS 2.1
THEMIS Mission PDR/CAR
9
UCB, November 12-14, 2003
Organization
Ground Segment
Mission Ops Science
Ops
(Mission Planning)
Manfred Bester
Mark Lewis
Tim Quinn
Sabine Frey
Tai Phan
John Bonnell
Laura Peticolas
GSFC/GCND
David Sibeck
Mark Beckman
Bob DeFazio
David Folta
Rick Harman
Ground Based
Observatories
All Sky
Imagers
Stephen Mende
Stu Harris
Steve Geller
Harald Frey
Ground
Magnetometers
Fielding
& Operation
(UC&UA)
UCLA
Chris Russell
Joe Means
Dave Pierce
UC
Eric Donovan
UA
J. Samson
THEMIS WBS 3
THEMIS Mission PDR/CAR
10
UCB, November 12-14, 2003
Top Level Schedule
GODDARD SPACE FLIGHT CENTER
MISSION MGR. : FRANK SNOW
MILESTONES
THEMIS TOP LEVEL SCHEDULE
STATUS AS OF: 11/06/03
CY 2003
CY 2004
CY 2005
CY 2006
J F M AM J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O
PDR.
MAJOR REVIEWS
SRR.
1 IDPU DEVELOPMENT
CONF. REV (HQ)
11/12-14
1/15
DSG COMPL.
CDR.
4/06-07
BOX ETU
ASSY I&T
12/08
4/01 4/16
7/16
MCRR
12/08-09
IDPU ETU DESIGN, FAB, I&T & FLIGHT
2 EFI SPB / AXB DEVELOPMENT
1 23 4 5 6
FLT I&T COMPL
8/18
7/13 7/28 8/11
7/21 8/04
ETU
TEST
DSG COMPL..
3
4 5 6
1
2
FLT I&T COMPL
6/08 7/06 8/03 8/31 9/28 10/12
EFI SPB & AXB DESIGN, FAB, I&T
11/26
3 ESA DEVELOPMENT
2/12
FLT
ASSY 16
ETU ETU
H/W
DSG COMPL.. FAB TESTS FAB
ESA ETU DESIGN, FAB, I&T & FLIGHT
1/22
4 SST DEVELOPMENT
4/30
2/27 3/05
ETU
DSG COMPL. FAB
Slack Legend
INSTRUMENT SLACK -PROBE
-CARRIER & BUS
SLACK
MISSION SLACK --
1-6
FLT I&T COMPL
6/25
8/27
ETU
I&T
FLT 1-6 FAB
1
COMPL.
3/02
7/06
2 3 4
5 6
SST ETU DESIGN, FAB, I&T & FLIGHT
FLT I&T COMPL
12/16
5 FGM DEVELOPMENT
DSG COMPL.
FGM ETU DESIGN, FAB, I&T & FLIGHT
9/29
ETU
FAB
DSG COMPL..
SCM EM DESIGN, FAB, I&T & FLIGHT
SCM EM DESIGN, FAB, I&T & FLIGHT
FLT 1-5
FGE
FAB &
TEST
FGE ETU
ETU TEST
I&T (GERM.
)
12/29 1/26 2/23
ETU
PROC/FA
B
6 SCM DEVELOPMENT
7 SCM/FGM BOOM DEVELOPMENT
1/06
ETU
I&T
12/10
3/08
FLT 1-2
5/31
3-5
FLT I&T COMPL
10/18
7/26
ETU
I&T
FLT 1-6
FAB
COMPL.
4/16
7/30
1/21
DSG
COMPL..
8/06 8/24 9/28
11/02
9/10 10/15
FAB HINGES
& TUBES
2-3
1
4-6
FLT I&T COMPL
9/24 10/25 11/30
1 2 34 5 6
FLT I&T COMPL
8 FLIGHT PLATFORM & HARNESS
6/14
8/24 9/07 9/21
8/31 9/14 9/28
1 2 3 4 5 6
FLT HARNESS COMPL
8/03 8/31 9/28
8/17 9/14 10/12
F1 F2 F3 F4 F5 F6
ETU I&T
9 INSTRUMENT I&T
ETU & FLIGHT 1 - 5 INTEGRATION & TEST
7/13
11/16 12/23 1/20
10/26 11/30 1/06
F5 SLACK (120 days)
INSTRUMENT DELIVERY TO SWALES
F1 SLACK (95 days)
F1
10 PROBE CARRIER
3/10
F1 SLACK (40 days)
PROBE CARRIER DESIGN, FAB, TEST
F2
4/06
F3
F4 F5
6/06
5/04
5/04
6/29
F5 SLACK (64 days)
9/28
DSG & PROCURE FAB COMPL..
I&T COMPLETE
11 SPACECRAFT PROBES
LONG LEAD PROCUREMENT,
SUBSYSTEM DESIGN, FAB & BUS I&T
F1
2/16
12 PROBE & INSTRUMENT I&T
8/09
F2-3
F4 F5
6/24
PROBE F1 SLACK (60 days)
5/11
PROBE I&T with INSTRUMENTS
6/27
PROBE
CARRIER SLACK
(60 days)
8/10
8/03
PROBE F5SLACK (40 days)
10/05
F1
F2-3 F4 F5
8/25
13 PROBE CARRIER ASSY I & T
9/15
10/19 12/05
11/23
INTEGRATION & ENVIRINMENTAL TESTS
3/15
14 LAUNCH OPERATIONS
SHIP &
LAUNCH
PROCESSING
LAUNCH PROCESSING/LAUNCH
THEMIS Mission PDR/CAR
5/25
MISSION SLACK
(60 days)
8/21
11
UCB, November 12-14, 2003
Review Process
Review Requirements and Plans
•
•
THEMIS_IIRP (7/31/03) meets GPG8700.6
THM-CDRL011C-EPRP (9/29/03) meets GPG8700.4
Team Selection
•
•
•
•
•
•
•
Chairman through which all RFAs will flow
Electrical Expert
Mechanical Expert
One or Two Sensor or Instrumentation Experts
GSFC Oversight (as always) encouraged
EPRP Instructions given to team members
LLIS Instructions & pre-selected items given to the teams
Results
•
•
•
Plenty of recommendations!
Not many substantive action items
Not a single LLIS “hit” (at least not identified as such)
THEMIS Mission PDR/CAR
12
UCB, November 12-14, 2003
Review Teams
Peer Review Team Composition
System
SCM
System
FGM
System
EFI
System
ESA
Name
Jeff Preble
Jim Slavin
Jose Merayo
Dave Everett
Mike Sholl
Name
Jeff Preble
Jim Slavin
Henry-Claude Seran
Dave Everett
Mike Sholl
Name
Jeff Preble
John Wygant
Robert Pfaff
Henry Heetderks
Mike Sholl
Name
Jeff Preble
Ed Shelley
Mike McCarthy
Henry Heetderks
Mike Sholl
THEMIS Mission PDR/CAR
Function
Review Chairman
Magnetics Expert
Magnetics Expert
Electrical
Mechanical
Function
Review Chairman
Magnetics Expert
Magnetics Expert
Electrical
Mechanical
Function
Review Chairman
Electric Fields Expert
Electric Fields Expert
Electrical
Mechanical
Function
Review Chairman
ESA/SST Expert
ESA/SST Expert
Electrical
Mechanical
Organization
SpaceWorks
GSFC
Danish Tech Univ
GSFC
UCB SNAP
Organization
SpaceWorks
GSFC
Orlean, France
GSFC
UCB SNAP
Organization
SpaceWorks
Univ of Minnesota
GSFC
UCB SNAP
UCB SNAP
Organization
SpaceWorks
Lockheed Palo Alto (Retired)
Univ Washington
UCB SNAP
UCB SNAP
13
UCB, November 12-14, 2003
Review Teams
Peer Review Team Composition
System
SST
System
IDPU
System
GBO
System
MO
Name
Jeff Preble
Ed Shelley
Mike McCarthy
Henry Heetderks
Mike Sholl
Name
Jeff Preble
John Wygant
Robert Pfaff
Ed Shelley
Don Mitchell
Henry Heetderks
Mike Sholl
Name
Gary Swensen
Hans Nielsen
Rick Sterling
Bill Davis
Dennis Lee
Name
Karen Richon
Rick Harmon
Osvaldo Cuevas
THEMIS Mission PDR/CAR
Function
Review Chairman
ESA/SST Expert
ESA/SST Expert
Electrical
Mechanical
Function
Review Chairman
Electric Fields Expert
Electric Fields Expert
ESA/SST Expert
ESA/SST Expert
Electrical
Mechanical
Function
Review Chairman
Ground Based Obs
Remote Site Fielding
Systems
Systems
Function
Review Chairman
ACS
Ops, Orbit Dyn
14
Organization
SpaceWorks
Lockheed Palo Alto (Retired)
Univ Washington
UCB SNAP
UCB SNAP
Organization
SpaceWorks
Univ of Minnesota
GSFC Code 600
Lockheed Palo Alto (Retired)
Johns Hopkins
UCB SNAP
UCB SNAP
Organization
University of Illinois
Univ of Alaska
UCB Penguin
GSFC Explorers
GSFC Explorers
Organization
GSFC GNCD
GSFC GNCD
GSFC GNCD
UCB, November 12-14, 2003
RFA Status
Overall RFA Status
Review
Systems Requirements
Probe and Probe Carrier
Fluxgate Magnetometer
Search Coil Magnetometer
ElectroStatic Analyser
Solid State Telescope
Electric Field Instrument
Instrument Data Processor
Magnetometer Booms
Ground Based Observatories
Schedule
Mission Operations
Date
July 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Oct 2003
Nov 2003
RFAs
Given Submitted
26
25
41
18
2
1
3
0
2
0
2
0
2
0
4
0
0
0
14
0
1
1
18
0
All Responses are submitted to Explorer’s Office & kept on the THEMIS ftp site.
THEMIS Mission PDR/CAR
15
UCB, November 12-14, 2003
SRR RFAs
SRR RFA Status
RFA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Originator
Title
Lead
Status
Killough
Requirements Flow-Down for Automated TestHarvey
Equipment
Submitted
Killough
State or Mode Dependent Requirements
Krauter
Submitted
Killough
Review MRD with Regard to Resolution, Accuracy
Brenneman
& Position
Submitted
Killough/BarrowmanRequirements Dealing with Time Synchronization,
Angelopoulos
MET, Time tagging
Submitted
Killough
Clarify Types of Spacecraft Numbers and Identifiers
Krauter-Bester
Submitted
F. Martin
Use GSFC Standard Practice for Margins and
Taylor
Margin History
Submitted
F. Martin/Bolek
Spacecraft Visibility with Ground/TDRS
Taylor
Submitted
F. Martin
Add I&T requirements Flow-Down for the Payload
Taylor-Brenneman
Carrier
Submitted
B.Taylor
Assigning Responsibility for Assuring Requirements
Taylor Compliance Submitted
B.Taylor
Compliance to Interface Control Documents Ajluni
Submitted
B.Taylor
Schedule to Release/Baseline of Level II/III Requirements
Harvey
Documents
Submitted
B.Taylor
Requirements Testing with the Ground System
Taylor-Bester
Submitted
Schnurr
Document Control, Signoff and Management Harvey
Submitted
Schnurr
Provide Flow-down of Safety/Inhibits for Separation
Ajluni and Propulsion
Submitted
Bolek/Glubke
Process for replacing a Failed Probe with a Replacement
Bester-Bonnell
probe
Bolek
Flux Gate Magnetometer requirements
Taylor
Submitted
Bolek
C&DH Capability for Writing and Retrieving from
Krauter
Memory
Submitted
Hair/Mark
Add Z-Axis Center of Gravity Requirement forLashley
PCA
Submitted
Hair
Set Limitations on the Placement of the MAGTaylor
and EFI Instruments
Submitted
Hair
Add Functional Requirements to IN.BOOM Requirements
Taylor
Submitted
Hair
Add Carrier De-Spin Requirement to the Launch
Taylor
Vehicle Requirements
Submitted
Hair
Adding Deployment Signal/Command Requirements
Ajluni
Submitted
Hair
Provide Clearer Connection Between ScienceAngelopoulos
and Mission Requirements
Submitted
Fantano
Specify Temperature Requirements for all Sensitive
Taylor Hardware
Submitted
Fantano
Specify Verification Test Requirements
Brenneman
Submitted
Fantano
Specify Minimum and Maximum Allowable Transmitter
Ajluni
On TimesSubmitted
THEMIS Mission PDR/CAR
16
UCB, November 12-14, 2003
SRR Recommendations
SRR Recommendation Status
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Rec
Originator
Davis
Fantano
Fantano
Glubke
Hair
Hair
Hair
Hair
J.B. Joyce
J.B. Joyce
J.B. Joyce
J.B. Joyce/ Mark
J.B. Joyce/Mark
Killough
Killough/Mark
Schnurr
Schnurr
Schnurr
THEMIS Mission PDR/CAR
Title
Lead
Implement Continuous Nitrogen Purge
Taylor
Re-evaluate Temperature Telemetry requirements
Ajluni
Suggested Change to PB.THM-16
Taylor
Impact of Extended Mission
Mission Life
Angelopoulos
Deployable Torque Ratio
Pankow
Deployment of magnetometer Booms
Pankow
MRD Configuration Management
Taylor
Assessment of Lunar Shadows
Bester-Frey
Detail the Processes for Orbit Determination Bester
Provide Optimized Ground Station Strategy Bester
Science End Product Requirements
Angelopoulos
Add Mission Operations Requirement Regarding
Taylor
Probe GRI
Implementing a Solid State Recorder
Harvey
Add Pre-Launch Mission Mode Constraints Ajluni
Probe Bus EPS Requirements ModificationsKrauter
Compliance with Orbital Debris requirementsAjluni
Need an End-to-End Data Analysis
Bester
17
Status
Submitted
Submitted
Submitted
Submitted
Submitted
Submitted
Submitted
Submitted
Submitted
Submitted
UCB, November 12-14, 2003
Instrument RFAs
RFA
FGM-1
FGM-2
System
FGM
FGM
Title
Implementing Magnetic Cleanliness Program
Add Anti-Aliasing Filtering
Resp
Status
Taylor
OPEN
Angelopolous
Submitted
RFA
SCM-1
SCM-2
SCM-3
System
SCM
SCM
SCM
Title
Implementing Magnetic Cleanliness Program
Review Parts Lists, Provide Parts As Needed
Define Sensor Alignment Budget
Resp
Taylor
Fisher
Turin
Status
OPEN
OPEN
OPEN
RFA
UCB-1
UCB-2
UCB-3
UCB-4
UCB-5
UCB-6
UCB-7
UCB-8
UCB-9
UCB-10
System
Systems
ESA
ESA/SST
Systems
Systems
SST
SST
EFI
EFI
Systems
Title
Develop Configuration Control System
Incorporate Beam Monitor in ESA Calibration
Develop Nanomuscle Test Plan
Manage Mass and Power
Develop Mechanism Life Cycle Testing Plan
Reduce Operating Temperature
Consider Design Trades [Sweep Magnet,etc]
Develop More Detailed ESC Plan
Develop More Detailed EMI Plan
Develop More Detailed I&T Plan
Resp
Taylor
Carlson
Turin
Taylor
Turin
Smith
Larson
Taylor
Taylor
Harvey
Status
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
THEMIS Mission PDR/CAR
18
UCB, November 12-14, 2003
Ground Based Obs RFAs
RFA
GBO-1
GBO-2
GBO-3
GBO-4
GBO-5
GBO-6
GBO-7
GBO-8
GBO-9
GBO-10
GBO-11
GBO-12
GBO-13
GBO-14
System Title
Systems Classify data
Resp
quality (haze), and not
necessarily only from star images
Fielding
Contract (pay) a local caretaker for remote
maintenance, including snow removal.
Fielding
Bury cables (rodents play havoc).
Fielding
Important note. Power in many Alaska and
Canadian sites are unreliable, including
intermittency, variable voltage, and variable
frequency.
Fielding
Keep a formal log of maintenance beyond
the monitoring parameters. I.e.-when has the
station been worked on? What was done? update systems
SOC
A Keogram for each ASI (1 minute temporal
resolution is ok)
ASI
Synchronize sampling at the different observatories.
ASI
Selectable retrieval of raw image data
ASI
Consider PC104-type Industrial SBCs
ASI
Consider UPS with automatic boot
ASI
Study trading more insulation .v. more
heaters
Systems Provide Systems Requirements Document
Systems Document Interfaces Between Major
Components
Systems Provide
Systems Test Plan
THEMIS Mission PDR/CAR
19
Status
Reviewer
OPEN
Hans Neislsen (U of Alaska)
OPEN
OPEN
Hans Neislsen (U of Alaska)
Hans Neislsen (U of Alaska)
OPEN
Hans Neislsen (U of Alaska)
OPEN
Hans Neislsen (U of Alaska)
OPEN
Hans Neislsen (U of Alaska)
Rick Sterling
Rick Sterling
Rick Sterling
Rick Sterling
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
Rick Sterling
Davis/Lee
Davis/Lee
Davis/Lee
UCB, November 12-14, 2003
Flight Dynamics/Msn Ops RFAs
RFA
FDMO-1
FDMO-2
FDMO-3
FDMO-4
System
Rationale
Reviewer Resp
Investigate monthly lunar perturbation Lunar perturbations can be used to Richon Frey
effects to determine optimal time
reduce fuel required if judicious
during month to launch
selection of launch date is made.
However, lunar perts can also
increase fuel req’d by decreasing
orbit energy & negatively impacting
orbit inclination. Also reduces the
amt of detailed
Decide on one pre-injection
Currently probes are designated as Richon Bester,
nomenclature for each probe. Should “Themis 1, Themis-2,…”,
Taylor,
not be names associated with integers “red,green…”, and “A,BC…”.
Ajluni
1-5 since the probes will be numbered Multiple names for same probe
Probe 1, Probe 2, etc. post-launch
causes confusion &
according to their final orbit positions misidentification of specific probes.
(similar to TDRSS).
Resolve Time Tag issue
Harman Taylor &
Ajluni
rd
Needed
for
orbit
injection
analysis.
If
Richon
Ajluni to
Get initial 3 -stage separation states
provide
(attitude & orbit) for each probe from Delta PMA is being done, these
states should be available soon.
to Frey
Boeing
Title
THEMIS Mission PDR/CAR
20
Status
OPEN
OPEN
OPEN
OPEN
UCB, November 12-14, 2003
Flight Dynamics/Msn Ops RFAs
RFA
FDMO-5
FDMO-6
FDMO-7
FDMO-8
FDMO-9
FDMO-10
System
Title
GMAN modeling issues: define each
‘maneuver mode’ incl type of mnvr,
which thrusters used,
pulsed/continuous, etc.. Then
determine if GMAN can model mnvr
correctly.
Determine ground station contact
tracking requirements such as pass
frequency & duration, # stations, for
mnvr planning & recovery vs regular
OD, etc.
Determine UCB station capabilities
incl support for perigee passes.
Rationale
Several questions regarding
whether GMAN can be used to
model finite mnvrs in all maneuver
configurations.
Reviewer Resp
Status
Richon Bonnell OPEN
&
DeFazi
o
Bester OPEN
&
Beckm
an
Mission depends heavily on UCB
Bester OPEN
antenna for tracking. Need to know
&
if orbit determination constraints can
Beckm
be met.
an
ITOS-to-MSASS interface code to
Harman used successfully for xx
Richon Bester OPEN
UCB
mission
&
Harman
Real time attitude determination-is this
Harman Bester, OPEN
a requirement? If so, what s/w?
Taylor
Possibly use MTASS w/modifications
et al
Multi-satellite critical operations: need
to have at least 2 prime workstations
supporting, plus at least 1 hot backup
for emergencies
THEMIS Mission PDR/CAR
Normally have 1 prime and 1
Richon Bester
backup for any critical operation for
et al
a single-satellite mission. Will have
to be able to support multiple
satellite critical ops
21
OPEN
UCB, November 12-14, 2003
Flight Dynamics/Msn Ops RFAs
RFA
FDMO-11
FDMO-12
FDMO-13
FDMO-14
FDMO-15
System
Title
Rationale
MSASS not capable of performing
magnetometer alignment. Determine if
need to acquire MTASS in addition to
MSASS for this function.
Include Pre-Launch Operations
(Simulation planning & support, launch
preparations) in future FD&MO
reviews
Provide access to latest mission
information to peer panel at least 2
weeks before review
Maneuver Calibration Procedures
need to be documented.
Reviewer Resp
Status
Harman Bester to OPEN
work with
Harman &
Beckman
Ensure resource requirements are
identified & included in planning
Richon Bester
OPEN
Richon Angelopol OPEN
ous
Each orbit & attitude maneuver
Richon Richon,
OPEN
should be analyzed post-maneuver
DeFazio
for efficiency & accuracy. Results
to provide
should be applied to future
GSFC
maneuver planning. Also needed for
FDAB
bookkeeping fuel used.
sample
procedure
s to
Bester
Document who is responsible for fuel- One entity should have responsibility Richon Angelopol OPEN
used bookkeeping (propulsion
for this function. It is particularly
ous &
engineer or Flt Dynamics Eng or other critical at end of life when probes
Bester
FOT member)
must perform controlled reentry.
THEMIS Mission PDR/CAR
22
UCB, November 12-14, 2003
Flight Dynamics/Msn Ops RFAs
RFA
FDMO-16
FDMO-17
FDMO-18
System
Title
Rationale
Best practices. Reduces risk.
Institute Command Authorization
Meetings (CAMs) for all orbit &
attitude maneuvers. Rquires
participation & ‘signoff’ from all
relevant subsystems & systems (FOT,
flt dyn, thermal, power, C&DH,
scientists, etc)
Provide MAP Anomalous Forces
Outgassing of instruments & other
technical paper to UCB
h/w may introduce anomalous force
creating torques on probe(s)
Provide JON/WBS to 595 for Themis Code 595 Flt Dynamics engineers
support
can not support Themis without
charge number
THEMIS Mission PDR/CAR
23
Reviewer Resp
Status
Richon Bester
OPEN
Richon Richon
OPEN
Angelo Snow
poulos
&
Richon
OPEN
UCB, November 12-14, 2003
Summary
Summary
Stable Science and Mission Concept and Requirements
No Significant Changes in Requirements or Concept
No Show Stoppers Identified Development or Review Teams
Organization is Active in All Development Areas
Successful Staffing at UCB and Swales
Staff Already in Place at Foreign Collaborators
Weekly and bi-weekly Telecons Active in all Major Areas
Systems Engineering in High Gear
Plans Documented, In Place and in Practice
Space Segment ICD’s in Signoff, Ground Segment coming up
Active Review Process in Place
Technical Expertise Provided in Comments and RFA process
Expect These Inputs will Help Shape Detailed Designs
THEMIS Mission PDR/CAR
24
UCB, November 12-14, 2003