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Airplanes and Aerodynamics
  • Angelo Ortiz

  • 問題数 49 • 1/6/2024

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  • 1

    What is one purpose of wing flaps?

    To enable the pilot to make steeper approaches to a landing without increasing the airspeed.

  • 2

    One of the main functions of flaps during approach and landing is to

    increase the angle of descent without increasing the airspeed.

  • 3

    What is the purpose of the rudder on an airplane?

    To control yaw.

  • 4

    The four forces acting on an airplane in flight are

    lift, weight, thrust, and drag.

  • 5

    When are the four forces that act on an airplane in equilibrium?

    During unaccelerated flight.

  • 6

    What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?

    Lift equals weight and thrust equals drag.

  • 7

    The term "angle of attack" is defined as the angle

    between the wing chord line and the relative wind.

  • 8

    Angle of attack is defined as the angle between the chord line of an airfoil and the

    direction of the relative wind.

  • 9

    The acute angle A is the angle of

    attack.

  • 10

    The angle of attack at which an airplane wing stalls will

    remain the same regardless of gross weight.

  • 11

    As altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will

    remain the same regardless of altitude.

  • 12

    In what flight condition must an aircraft be placed in order to spin?

    Stalled.

  • 13

    During a spin to the left, which wing(s) is/are stalled?

    Both wings are stalled.

  • 14

    How will frost on the wings of an airplane affect takeoff performance?

    Frost will disrupt the smooth flow of air over the wing, adversely affecting its lifting capability.

  • 15

    Why is frost considered hazardous to flight?

    Frost spoils the smooth flow of air over the wings, thereby decreasing lifting capability.

  • 16

    How does frost affect the lifting surfaces of an airplane on takeoff?

    Frost may prevent the airplane from becoming airborne at normal takeoff speed.

  • 17

    What is ground effect?

    The result of the interference of the surface of the Earth with the airflow patterns about an airplane.

  • 18

    Floating caused by the phenomenon of ground effect will be most realized during an approach to land when at

    less than the length of the wingspan above the surface.

  • 19

    What must a pilot be aware of as a result of ground effect?

    Induced drag decreases; therefore, any excess speed at the point of flare may cause considerable floating.

  • 20

    Ground effect is most likely to result in which problem?

    Becoming airborne before reaching recommended takeoff speed.

  • 21

    What force makes an airplane turn?

    The horizontal component of lift.

  • 22

    An airplane said to be inherently stable will

    require less effort to control.

  • 23

    What determines the longitudinal stability of an airplane?

    The location of the CG with respect to the center of lift.

  • 24

    An airplane has been loaded in such a manner that the CG is located aft of the aft CG limit. One undesirable flight characteristic a pilot might experience with this airplane would be

    difficulty in recovering from a stalled condition.

  • 25

    What causes an airplane (except a T-tail) to pitch nosedown when power is reduced and controls are not adjusted?

    The downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced.

  • 26

    Loading an airplane to the most aft CG will cause the airplane to be

    less stable at all speeds.

  • 27

    In what flight condition is torque effect the greatest in a single-engine airplane?

    Low airspeed, high power, high angle of attack.

  • 28

    The left turning tendency of an airplane caused by P-factor is the result of the

    propeller blade descending on the right, producing more thrust than the ascending blade on the left.

  • 29

    When does P-factor cause the airplane to yaw to the left?

    When at high angles of attack.

  • 30

    The amount of excess load that can be imposed on the wing of an airplane depends upon the

    speed of the airplane.

  • 31

    Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?

    Turns.

  • 32

    During an approach to a stall, an increased load factor will cause the airplane to

    stall at a higher airspeed.

  • 33

    If an airplane weighs 2,300 pounds, what approximate weight would the airplane structure be required to support during a 60° banked turn while maintaining altitude?

    4,600 pounds.

  • 34

    If an airplane weighs 3,300 pounds, what approximate weight would the airplane structure be required to support during a 30° banked turn while maintaining altitude?

    3,960 pounds.

  • 35

    If an airplane weighs 4,500 pounds, what approximate weight would the airplane structure be required to support during a 45° banked turn while maintaining altitude?

    6,750 pounds.

  • 36

    How should a VFR flight plan be closed at the completion of the flight at a controlled airport?

    The pilot must close the flight plan with the nearest FSS or other FAA facility upon landing

  • 37

    During the preflight inspection who is responsible for determining the aircraft as safe for flight?

    The pilot in command

  • 38

    Who is primarily responsible for maintaining an aircraft in airworthy condition?

    Owner or operator

  • 39

    How should an aircraft preflight inspection be accomplished for the first flight of the day?

    Thorough and systematic means recommended by the manufacturer

  • 40

    When taxiing with strong quartering tailwinds, which aileron positions should be used?

    Aileron down on the side from which the wind is blowing

  • 41

    Which aileron positions should a pilot generally use when taxiing in strong quartering headwinds?

    Aileron up on the side from which the wind is blowing

  • 42

    Which wind condition would be most critical when taxiing a nosewheel equipped high-wing airplane?

    Quartering tailwind

  • 43

    How should the flight controls be held while taxiing a tricycle-gear equipped airplane into a left quartering headwind?

    Left aileron up, elevator neutral

  • 44

    How should the flight controls be held while taxiing a tricycle-gear equipped airplane with a left quartering tailwind?

    Left aileron down, elevator down

  • 45

    How should the flight controls be held while taxiing a tailwheel airplane into a right quartering headwind?

    Right aileron up, elevator up

  • 46

    How should the flight controls be held while taxiing a tailwheel airplane with a left quartering tailwind?

    Left aileron down, elevator down

  • 47

    Upon encountering severe turbulence, which flight condition should the pilot attempt to maintain?

    Level flight attitude

  • 48

    VFR approaches to land at night should be accomplished

    the same as during daytime

  • 49

    The most important rule to remember in the event of a power failure after becoming airborne is to

    immediately establish the proper gliding attitude and airspeed