单选题 On a single engine aircraft with a clockwise rotating propeller (view from inside), during a turn to the left, the gyroscopic effect will cause:

A、 a nose up pitch

B、 a nose down pitch

C、 a rolling moment to the left

D、 a rolling moment to the right

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相关试题

单选题 A stick shaker is:

A、 an artificial instability device

B、 an artificial stability device

C、 an overspeed warning device that operates at high mach numbers

D、 a device to vibrate the control column to give a stall warning

单选题 The diameter of the propeller blades is necessarily limited by:

A、 propeller shaft limitations

B、 economy of construction

C、 the number of blades

D、 tip speed

单选题 The term “angle of attack” is defined as the angle

A、 between the wing chord line and the relative wind.

B、 between the airplane’s climb angle and the horizon.

C、 formed by the longitudinal axis of the airplane and the chord line of the wing.

单选题 Total pressure is:

A、 potential+kinetic

B、 dynamic-static

C、 potential-kinetic

D、 dynamic+static

单选题 For air passing over an aerofoil, the velocity of the airfoil will:

A、 increase over the more curved upper surface, and the static pressure will fall

B、 increase over the more curved upper surface, and the static pressure will rise

C、 decrease over the more curved upper surface, and the static pressure will rise

D、 decrease over the more curved upper surface, and the static pressure will fall

单选题 Propeller blade angle:

A、 is the same throughout the length

B、 decreases from tip to root

C、 increases from root to tip

D、 decreases from root to tip

单选题 Angle of attack is the angle between the free stream relative airflow and the:

A、 MAC of an aerofoil section

B、 chord line of an aerofoil section

C、 average chord line of an aerofoil section

D、 camber line of an aerofoil section

单选题 During incipient spin(autorotation) ( )

A、 both wings have a large negative angle of attack

B、 both wings have a positive angle of attack

C、 one wing has a positive angle of attack ,and the other has a negative angle of attack

D、 the aircraft pitches nose-up