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Case Study

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by

Ryan Tham

on 14 June 2016

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Transcript of Case Study

Uses optical fibres and sensors
Even lighter than FBW
Higher bandwidth --> transmit data faster --> smoother manoeuvring --> larger safety margin
However expensive and components not readily available
Safer for military planes
By Ryan, Kavi and Siva
Aircraft Control Systems
Mechanical --> Hydro-mechanical --> Fly-by-Wire (current) --> Fly-by-Light (Future?)
Flight control systems evolution
Movement of flight controls converted to electronic signals transmitted by wires
Can send automatic signals
Lighter than Older avionic systems
Used by A320, A380, B777, B787 etc
However vulnerable to Electromagnetic Interference
Fly-By-Wire (FBW)
Fly-By-Light (FBL)
Comparison
Fly-by-Wire
Fly-by-Light
Aircraft control systems controlled hydraulically from fly-by-wire system
Automatically Controlled Flight
Control Surfaces
Automatic flight control ease the pilot’s workload and provide aircraft stability at all speeds.
Autopilot software features electromechanical devices(servos) that operates the aircraft control surfaces, translates electrical commands into motion
Gyroscopes fitted with sensors are mounted, to sense movement changes in the pitch, roll and yaw axes.
Automatic signals(without pilots input)--> stabilize aircraft, prevent unsafe operation
Flight director(FD)--> accomplishes additional tasks and displays indications for guidance
uses optical fibre cables

not used yet (future)


safe from em signals

transmits data faster

Lightweight
uses electric cables

used by most commercial and military aircraft

higher risk of being interferred by EM signals

cheaper (as of now)
Hydraulically controlled surfaces
Used to control landing gear, flaps and brakes etc
Fluid is the medium via which a hydraulic system transmits its energy
Takes engine power and converts it into hydraulic power by means of a hydraulic pump
Measured in pascals (Newtons/square meter).
credits
www.ijetae.com/files/volume3issue12/IJETAE_1213_11.PDF
www.faa.gov./regulations_policy/handbooks_manuals/aviation/advanced_avionics_handbook/media/aah_ch04.pdf
http://www.allstar.fiu.edu/AERO/Hydr02.htm
https://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwiM0N3dj97MAhXJLo8KHdLmBX4QjB0IBg&url=http%3A%2F%2Fwww.flightlearnings.com%2F2009%2F08%2F31%2Fflight-controls%2F&psig=AFQjCNGtdwl0iqQFU6afnSokpgMOSPmoAg&ust=1463471878249926
https://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwj0tf74j97MAhUKQY8KHb4nCN8QjB0IBg&url=http%3A%2F%2Fwww.dassault-aviation.com%2Fen%2Fdefense%2Frafale%2Fintroduction%2F&psig=AFQjCNFr_vZX2YprtJCV2mcNN41IWkTpgw&ust=1463471927886394
https://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjg1teEkN7MAhWJqY8KHfeLBywQjB0IBg&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBoeing_787_Dreamliner&psig=AFQjCNFHNu5jf9hVWzVLCW7Q_rSJCvNq4A&ust=1463471958924612
https://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjot9qYkN7MAhUBMY8KHWNXA64QjB0IBg&url=http%3A%2F%2Fencyclopedia2.thefreedictionary.com%2Ffly-by-light&psig=AFQjCNEp8DnwxGyL4W3Y4outJIpbfV4PAA&ust=1463472001598782

Ryan
Ryan
Ryan
Kavi
Siva
Kavi
A valve is opened, the hydraulic liquid flows into the actuator and presses against the piston, causing it to move and in turn move the attached control surface
Kavi
Full transcript