1. Asked: May 31, 2024In:

    In a fixed-wing aircraft, roll is controlled by

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    the ailerons.   (Roll is controlled by the ailerons in an airplane. See "Loading and Performance > Axes of Rotation" for more information.

    the ailerons.  

    (Roll is controlled by the ailerons in an airplane. See “Loading and Performance > Axes of Rotation” for more information.

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  2. Asked: May 31, 2024In:

    In a fixed-wing aircraft, yaw is controlled by

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    the rudder. (Yawing is controlled by the rudder in an airplane. See "Loading and Performance > Axes of Rotation" for more information.)

    the rudder.

    (Yawing is controlled by the rudder in an airplane. See “Loading and Performance > Axes of Rotation” for more information.)

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  3. Asked: May 31, 2024In:

    The acute angle A is the angle of

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    Attack. (The angle of attack is always defined as the angle between the chord line and the relative wind. This definition needs to be committed to memory. The angle of dihedral does not exist. The angle of incidence is the angle between the chord line and the longitudinal axis of the aircraft. It isRead more

    Attack.

    (The angle of attack is always defined as the angle between the chord line and the relative wind. This definition needs to be committed to memory. The angle of dihedral does not exist. The angle of incidence is the angle between the chord line and the longitudinal axis of the aircraft. It is a fixed number and does not change in flight. See “Stalls” video for more information. )

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  4. Asked: May 31, 2024In:

    The angle of attack at which an airplane wing stalls will

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    remain the same regardless of gross weight. (The angle of attack at which an airplane stalls is defined as the critical angle of attack. Since the angle of attack is defined as the difference between the chord line and the relative wind, it is not affected by weight at all. See "Stalls" video for moRead more

    remain the same regardless of gross weight.

    (The angle of attack at which an airplane stalls is defined as the critical angle of attack. Since the angle of attack is defined as the difference between the chord line and the relative wind, it is not affected by weight at all. See “Stalls” video for more information.)

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  5. Asked: May 31, 2024In:

    The term “angle of attack” is defined as the angle between the

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    chord line of the wing and the relative wind.  (This is rote memory material. The angle of attack is always defined as the difference between the chord line and the relative wind. The chord line is the line between the leading edge and the trailing edge of the wing. The relative wind is the vector tRead more

    chord line of the wing and the relative wind. 

    (This is rote memory material. The angle of attack is always defined as the difference between the chord line and the relative wind. The chord line is the line between the leading edge and the trailing edge of the wing. The relative wind is the vector that represents where the airflow that “hits” the wing is coming from. The relative wind is always parallel to the direction of motion of the aircraft, but opposite in direction. See “Stalls” video for more information.)

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  6. Asked: May 31, 2024In:

    If an unmanned airplane weighs 33 pounds, what approximate weight would the airplane structure be required to support during a 30° banked turn while maintaining altitude?

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    38 pounds.   (The information needed for this answer is found in the left column of the figure. At 30° of bank, the load factor is 1.154. If the object weighs 33 pounds, then at 30°, the load factor will be 33x1.154=38 pounds. See "Load Factor" video for more information.)

    38 pounds.  

    (The information needed for this answer is found in the left column of the figure. At 30° of bank, the load factor is 1.154. If the object weighs 33 pounds, then at 30°, the load factor will be 33×1.154=38 pounds. See “Load Factor” video for more information.)

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  7. Asked: May 31, 2024In:

    When loading cameras or other equipment on an sUAS, mount the items in a manner that

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    This answer was edited.

    does not adversely affect the center of gravity.   (As seen in the videos in this chapter, mounting anything to the sUAS affects the location of the CG. So when mounting cameras or other equipment, be sure it doesn't change the CG to the point where it is out of limits. While the other two answers aRead more

    does not adversely affect the center of gravity.  

    (As seen in the videos in this chapter, mounting anything to the sUAS affects the location of the CG. So when mounting cameras or other equipment, be sure it doesn’t change the CG to the point where it is out of limits. While the other two answers are rather correct, the “most correct” answer is still “does not adversely affect the center of gravity.” See “Factors affecting performance” video for more information.)

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