27 flight controls

Question 1

how are flight controls classified

Answer 1

Flight controls

• reversible
  
  • no power
  • hydraulic power
  • pneumatic power
  • elecitrical power
• irriversible
  
  • fly-by-wire
  • fly-by-cable
  • fly-by-light

Question 2

main tasks of flight controls

Answer 2

control and trim

Question 3

when is the aircrat “trimmed”

Answer 3

when the sum of moments around each axis is zero (aerodynamic forces keep controls in their place)

Question 4

what are the primary flight controls

Answer 4

ailerons, elevators, rudder

Question 5

what are secondary flight controls? purpose?

Answer 5

high lift devices,

to reduce speed for landing

Question 6

what are classifications of secondary flight controls

Answer 6

passive (change surface) - internal or external

active (add energy to surface) ex boundary layer control to delay flow separation

Question 7

what is a fowler flap? why?

Answer 7

bottom part of TE can slide back and angle down

to increase sa and increase camber

Question 8

diff bw track, lingage and dropped hinge for flaps movement

Answer 8

track -> most control , most difficult to manufacture
limkage. links connected to each other (cheaper, typic al)
dropped hinge linkage with dropped hing for more surface area