Additionals Aeridinamic Flashcards
What is the relationship between induced drag and parasite drag when gross weight is increased?
Induced drag increases more than parasite drag.
What effect , if any, does altitude have on VMC for an airplane with unsupercharged engines?
Decreases with altitude
What is the purpose of the flight spoilers?
Reduce lift without decreasing airspeed.
What affects indicated stall speed?
weight, load factor and power.
Which is the purpose of the wing mounted vortex generators?
Delays the onset of drag divergence at high speeds and aids in maintaining aileron effectiveness at high speed.
When are inboard ailerons normally used?
Low speed and high speed flight
What effect does an increase in airspeed have on a coordinated turn while maintaining a cosntant angle of banck and altitude?
The rate of turn will decrease resulting in no changes in load factor.
By changing the angle of attck of a wing , the pilot can control the airplane’s
lift, airspeed, and drag
What will be the ratio bet ween speed and lift if angle of attack remain constant and speed is doubled?
Lift will be 4 times greather
Subsonic range
Mach below .75
Transonic range
Mach .75 to 1.20
Supersonic range
Mach 1.20 to 5.0
Hypersonic range
Mach above 5.0
What is the purpose of a servo tab?
Reduce control forces by deflecting in the proper direction to move a primary flight control.
If no corrective action is taken by the pilot as angle of bank is increased?
Lift decreases and sink rate increases.
In a light , twin engine airplane with one engine inop., when is it acdeptable to allow the ball of a slip-skid indicator to be deflected outside the reference lines?
When operating at any airspeed of VMC or greather …
What is the purpose of an elevator trim tab?
Modify the downward tail load for various speeds in flight eliminating flight control pressures.
What performance should a pilot of a twin engine be able to maintain at VMC?
heading
What is one disadvantage of a sweptwing desing?
The wing tip section stalls prior to the wing root.
What flight condition should be expected when an aircraft leaves ground effect?
An increase in induced drag requiring a higher angle of attack.
What is the advantage of a sweepback desing wing over a straighwing?
The critical mach number will increase significantly.
