Mark IV Antiskid
Brake Control System Upgrade
Randy Williams
Crane Aerospace & Electronics
818-288-7620
randy.williams@craneaerospace.com
Overview
• Crane Aerospace Introduction
• Antiskid Upgrade Overview and Schedule
• Current C-130 Configurations, Mark II and IV
• Mark IV Upgrade
• Benefits
• Sales and Distribution Partner
Dollars (in Millions)
Dollars
(in Millions)
A Diversified Manufacturer of
Engineered Products
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11,000 employees
Headquarters – Stamford, CT
Founded 1855
NYSE: CR
Financial Strength:
– Strong Cash Flow
– Liquidity
$2.2B Annual Sales
(2010)
© 2011 Crane Aerospace & Electronics
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Aerospace & Electronics
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2,800 employees globally
Certified ISO 9001 at all global manufacturing sites
12 Manufacturing sites
Products supported in 30 countries
Seven core solutions focused on niche technologies
Aerospace Group
Electronics Group
(1,400 employees)
• Cabin Systems
• Fluid Management
• Landing Systems
• Sensing & Utility Systems
(1,400 employees)
• Power
• Microwave
• Microelectronics
2010
$577M Sales
Aerospace, 79%
Electronics, 66%
Aerospace
60%
Electronics
40%
Electronics, 34%
Aerospace, 21%
Commercial
© 2011 Crane Aerospace & Electronics
Defense
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Site Locations
Americas
Beverly, MA
Burbank, CA
Chandler, AZ
Elyria, OH
Fort Walton Beach, FL
Lynnwood, WA
Norwalk, CT
Redmond, WA
San Jose, Costa Rica
West Caldwell, NJ
Wichita, KS
Europe &
Middle East
Filton, UK
Lyon, FR
Dubai, UAE
© 2011 Crane Aerospace & Electronics
Asia
Beijing, China
Shanghai, China
Pune, India
Kaohsiung, Taiwan
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Segment Solutions
AEROSPACE
ELECTRONICS
Cabin
Systems
Power
Fluid
Management
Microwave
Landing
Systems
Microelectronics
Sensing &
Utility Systems
© 2011 Crane Aerospace & Electronics
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Aerospace Group Solutions
AEROSPACE
Cabin
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Seat Actuation
Lumbar Support
Integrated Control
Power Conversion
Fluid
Management
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Centrifugal Pumps
Coolant Pumps and Coolant Package Systems
Fuel Boost, Transfer and Jettison Pumps
Fuel Flowmeters / Fuel Gauging Systems
Landing
Systems
• Brake Control Components and Systems
• Hydraulic Equipment
• Landing Gear Extension & Retraction Systems
Sensing &
Utility Systems
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Active/Passive Proximity Sensors and Systems
Dynamic Range Proximity Sensing Components
Position Indication & Control Systems
Ground Fault Interrupters (SafeTripTM), Pressure Sensors
Weight and Balance (AirWeighsTM)
Wireless Tire Pressure (SmartStem®)
Aerospace Group Solutions
AEROSPACE
Cabin
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Seat Actuation
Lumbar Support
Integrated Control
Power Conversion
Fluid
Management
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Centrifugal Pumps
Coolant Pumps and Coolant Package Systems
Fuel Boost, Transfer and Jettison Pumps
Fuel Flowmeters / Fuel Gauging Systems
Landing
Systems
Sensing &
Utility Systems
• Brake Control Components and Systems
• Hydraulic Equipment
• Landing Gear Extension & Retraction Systems
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Active/Passive Proximity Sensors and Systems
Dynamic Range Proximity Sensing Components
Position Indication & Control Systems
Ground Fault Interrupters (SafeTripTM), Pressure Sensors
Weight and Balance (AirWeighsTM)
Wireless Tire Pressure (SmartStem®)
Landing Systems Solutions
Brands: Hydro-Aire, Eldec
Locations: Burbank CA, Lynnwood WA
Brake control for reduced maintenance cost and increased
safety
Remote data concentrators and integrated modular avionics
packaging for advanced architectures
In-axle functionality saves weight and space
Landing gear indication and control
systems for improved reliability and lower
cost
© 2011 Crane Aerospace & Electronics
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Crane Brake Control
Experience
• Crane is the undisputed leader in
aircraft brake control systems
– 60+ years of experience
– 65% market share commercial
programs
– 80% market share (Western)
military programs
– Over 15,000 systems delivered and
in service
– Most experienced engineering staff
in the industry
– Only company developing electric
brake control for large commercial
aircraft
Crane Market Share –
Brake Control
Crane
All
Others
Crane can work with any wheel &
brake manufacturer and provide an
independent perspective on brake
system architecture
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Hydro-Aire
Burbank, California
Electronic Controls
• The world premier
supplier of Brake Control
systems
• Burbank, California based
• 600 Employees
• Founded 1943
• Acquired by Crane Co.
1951
Electrohydraulic Servovalves
and Manifolds
Wheelspeed Transducers
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Innovation in Brake Control
Technology Evolution
Mk1
Crane introduces first antiskid in 1947
Crane introduces first wheel
speed transducer
 Electronics to drive rate sensing
 Linear four-way pressure control valves to
modulate brake pressure
 Improve brake control efficiency & reliability on all
pavement conditions
Mk3
Crane Introduces first adaptive
control
 Based on maximum braking under all operating
conditions
 Higher response Hydraulic control valves
 Improved brake control, smoothness and efficiency
 Wet and dry runway performance improvement
Mk4
Crane introduces first
microprocessor based
digital system
 Improved control algorithms allowed efficiencies
>95% under all operating conditions
 Unigain antiskid valve improved system
performance under variable pilot pedal input
Mk5
Crane introduces complete
brake-by-wire system
 Very high performance digital brake control
 Latest technology used on B787 (electric brake)
Mk2
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Program Overview
• USAF Wheel and Brake System Improvement (WBSI)
• Reliability and performance improvement program
managed by USAF Landing Gear Program Office, Hill
AFB
Major Components of System Upgrade
» Wheels and Carbon Brakes (Goodrich)
» Antiskid Brake Control (Crane)
Hydro-Aire, a Crane Aerospace brand, is the legacy supplier of all
C-130 brake control systems
Program Overview
• Antiskid Brake Control System Upgrade Schedule
– Qualified ….July 2010
– Production Contract awarded …..August 2010
– Functional Fit Check….September 2010
– Deliveries….October 2010 to October 2012
– Flight Test…. June 2011 to August 2011
– USAF Legacy Fleet Retrofit …. 2012 to 2014+
Current C-130 Antiskid
Configuration
• Brake control systems on C-130A/B/E/H aircraft
– Mix of Hydro-Aire Mark I and Mark II
• Mark I/II Limitations
– Older technology
– Low braking efficiency by today’s standards
– Control limitations prevent efficient control of carbon brakes
to allow inherent life improvement characteristics
– Analog components
– Obsolete components
• The Mark IV digital system is used on the C-130J
Current C-130 Antiskid
Configuration
Application
C-130A/B
C-130E/H
C-130J
C-130A/B/E/H
WBSI upgrade
C-130 Brake Control Configurations
Brake Control Brake Material Key Performance Factor
Mark I
Steel
Rate detection
Mark II
Steel
Electronic
Mark IV
Steel
Digital Velocity Control
Maximum Brake
Performance: Life,
Torque, Wear
Mark IV
Carbon
Mark IV System Upgrade
• Mark IV Digital Brake Control
– Velocity Control / High Efficiency braking
• Proven Technology
– Military: C-130J, C-17
– Civil: 737, 747, 757, 767, 777, 717, most business
and regional jets.
• Fully Compatible with new Wheel and Carbon
Brake
– Enables maximum carbon braking performance
Mark IV Upgrade
Components
• Digital Antiskid Controller
– One per ship set
• Wheel Speed Transducers
– Four per ship set
Mark IV Upgrade
Components
• Dual Brake Control Valves
– Two per ship set
– Includes Park Brake Function
• Fault Display Unit
– One per ship set
– Enables non-volatile flight data recording
Mark IV Upgrade
Benefits
• Improved Brake Control
• 20% efficiency gain on wet or icy runways
• 8% efficiency gain on dry runways
• Reduced Operating Costs
– Digital components, eliminates analog parts
obsolescence
– Extends brake and tire life by reducing “hard skids”
– FDU facilitates troubleshooting and maintenance
actions
Sales and Distribution
Crane Aerospace and Aero Precision Partnership
for
Foreign Military
&
Non-Military Operators
Points of Contact
Aero Precision:
Noreen Kabra
30 Lindbergh Avenue
Livermore, CA 94551
Crane Aerospace:
Randy Williams
5962 Zebulon Road, Ste 328
Macon, GA 31210
Office: 925-579-8037
Mobile: 925-519-1393
nkabra@aeroprecision.com
Office: 478-477-6684
Mobile: 818-288-7620
randy.williams@craneaerospace.com
Thank-You