曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
2004 Sales : over 10 billion euros
56,200 employees in over 30 countries
Four branches of activities, including prestigious brands, in the
areas of:
Propulsion
Communication
Aerospace Equipment
Defense and Security
Streamlined management structure and operating companies
organized by business and product family
SAFRAN : LEADER IN ADVANCED TECHNOLOGIES
100
Canada UK France
Montréal
Gloucester
Bidos
Vélizy
USA
35 Seattle
Singapore
Toronto
925
500
China
Suzhou
140
4,000 EMPLOYEE WORKFORCE
200
180
20
180 Sterling
180 Molsheim
75
35
500
335
Messier Services
Messier-Dowty
800
180
Design offices in France, UK, Canada & USA
Over 400 design & development engineers
Extensive landing gear test facilities including systems rigs
Landing gear system integration capability
Advanced materials and systems research and technology
Strong synergies with the Safran group
Worldwide R&T partnerships
ADVANCED ENGINEERING EXPERTISE
AIRBUS
• A318 / A319 /A320 / A321
• A300 / A310
• A330 / A340
• A340 Enhanced
• A340-500 / 600
• A340-500/600 HGW
• A380
BOEING
• 787 Dreamliner
• 777
COMMERCIAL PROGRAMS
AVCRAFT
• DO 328 /DO328J / Envoy 3
ATR
• ATR 42/72
BAE SYSTEMS / AVRO
• RJ
• Jetstream 61
BOMBARDIER
• Dash 8
• Canadair RJ
• Challenger 300 /600/601/604
• Global Express
EADS SOCATA
• TMB 700
CASA/ IPTN
• C-295
• CN-235
• N-250
DASSAULT FALCON
• Falcon 10, 20, 50, 50EX,
• Falcon 900, 900EX, 2000
• Falcon 7X
EMBRAER
• EMB 120
FOKKER
• F 50 / F 60
• F 70 / F 100
RAYTHEON
• Hawker Horizon
• Hawker 800XP
SUKHOI
• Russian Regional Jet
EADS
• Transall C- 160
• G 222
EMBRAER
• AMX
EUROCOPTER
• Alouette III
• Dauphin/Panther
• Puma
• Super Puma/Couger
• Tiger
• Super Frelon
EUROFIGHTER
• EF 2000
AIRBUS MILITARY
•A400M
AGUSTA / WESTLAND
• A 129 Mangusta
AGUSTA/SIAI MARCHETTI
• S 211
BAE SYSTEMS
• Nimrod MRA4
• Harrier
BELL / AGUSTA
• BA 609
BELL / BOEING
•V22 Osprey
BOEING MILITARY
• F/A 18 C/D & E/F
• AV8B
• T45
CASA
• C 101
DENEL
• Rooivalk
DASSAULT AVIATION
• Atlantique 2
• Alphajet
• Mirage F1
• Mirage 2000 and 2000-5
• Rafale B,C,M
KAMAN
• SH2 Seasprite
KAI
• T-50
PIAGGIO
• P180
PANAVIA
• Tornado
SEPECAT
• Jaguar
MILITARY & HELICOPTER PROGRAMS
Landing Gear Design & Simulation
Design
CAD Modelling
– CATIA
Stick Geometry
– Airframe attachments
– Ground contact (wheel/tyres)
– Joints
Kinematics
– Extension/Retraction
– Shock Absorber Closure
– Shortening?
Basic Sizing
– Shock absorber diameter (seal
selection)
– Preliminary joint sizing (pin diameters)
Landing Gear Design & Simulation
Dynamic Analysis
Spring Design
Damping Optimisation
Actuator sizing and timing
Vibration & Shimmy/Stability
2 2 2 x , x&, &x&
( )2
1 2 ( ) c x&− x& 1 2 k x − x
m2g
( ) 2 k x t
1 1 1 x , x&, &x&
m1g
L
Time
Force
Stroke
Force
Spring Stiffness
Ground Response
Landing Gear Design & Simulation
Loads
Static Strength (Airworthiness codes)
Fatigue Spectra (Exceedence data)
Typical CS25 Load Case Description Descent Velocity Exceedence Data
3
5
7
9
11
13
15
1 100 10000
Cumulative Occurance
Descent Velocity (ft/s)
Landing Gear Design & Simulation
Structures
Structural Stiffness/Flexibility
Static Strength
Fatigue Strength
Special Cases
– Impact
– Crashworthiness
Stiffness
Strength
Landing Gear Design & Simulation
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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