m11.1 extended Flashcards
where are trim tabs located
trailing edge of primary flight control surface
how are servo tabs operated
directly by the pilot
how do you prevent mass balance flutter
mass balancing or by making controls irreversible
what is flexural aileron flutter
aileron movement lagging behind the rise and fall of the outer wing
how is flexural aileron flutter prevented
mass balancing
what is control surface bias
refers to a specific configuration applied to control surfaces to achieve desired characteristics
where is the horn located for horn balance
forward of the hinge line
speed of sound at sea level
340 m/s (15 degrees)
speed of sound at 36,000 ft
295 m/s (56.5 degrees)
what is the formula for mach
speed of object over speed of sound
speed at
subsonic-
transonic-
supersonic-
subsonic- 0-0.8
transonic- 0.8-1.2
supersonic- 1.2-5
what happens with compressibility buffet
rise in drag
drop in lift
buffeting
changes in trim and stability
what happens after a normal shockwave
temp rise
pressure rise
air velocity decrease to subsonic
what happens after an oblique shockwave
air velocity reduced but still supersonic
slight temp and pressure increase
Are expansion waves, shock waves
NO
