Additionals Aeridinamic Flashcards

1
Q

What is the relationship between induced drag and parasite drag when gross weight is increased?

A

Induced drag increases more than parasite drag.

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2
Q

What effect , if any, does altitude have on VMC for an airplane with unsupercharged engines?

A

Decreases with altitude

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3
Q

What is the purpose of the flight spoilers?

A

Reduce lift without decreasing airspeed.

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4
Q

What affects indicated stall speed?

A

weight, load factor and power.

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5
Q

Which is the purpose of the wing mounted vortex generators?

A

Delays the onset of drag divergence at high speeds and aids in maintaining aileron effectiveness at high speed.

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6
Q

When are inboard ailerons normally used?

A

Low speed and high speed flight

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7
Q

What effect does an increase in airspeed have on a coordinated turn while maintaining a cosntant angle of banck and altitude?

A

The rate of turn will decrease resulting in no changes in load factor.

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8
Q

By changing the angle of attck of a wing , the pilot can control the airplane’s

A

lift, airspeed, and drag

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9
Q

What will be the ratio bet ween speed and lift if angle of attack remain constant and speed is doubled?

A

Lift will be 4 times greather

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10
Q

Subsonic range

A

Mach below .75

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11
Q

Transonic range

A

Mach .75 to 1.20

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12
Q

Supersonic range

A

Mach 1.20 to 5.0

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13
Q

Hypersonic range

A

Mach above 5.0

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14
Q

What is the purpose of a servo tab?

A

Reduce control forces by deflecting in the proper direction to move a primary flight control.

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15
Q

If no corrective action is taken by the pilot as angle of bank is increased?

A

Lift decreases and sink rate increases.

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16
Q

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?

A

When operating at any airspeed of VMC or greather …

17
Q

What is the purpose of an elevator trim tab?

A

Modify the downward tail load for various speeds in flight eliminating flight control pressures.

18
Q

What performance should a pilot of a twin engine be able to maintain at VMC?

A

heading

19
Q

What is one disadvantage of a sweptwing desing?

A

The wing tip section stalls prior to the wing root.

20
Q

What flight condition should be expected when an aircraft leaves ground effect?

A

An increase in induced drag requiring a higher angle of attack.

21
Q

What is the advantage of a sweepback desing wing over a straighwing?

A

The critical mach number will increase significantly.