Question

1. An aircraft with swept wings is flying at zero bank angle. A sudden disturbance in the air causes it to roll towards the left. What will happen to the lift force on the left wing?

		It will decrease as the effective angle of attack on the left wing increases.
		It will decrease as the effective angle of attack on the left wing decreases.
		It will increase as the effective angle of attack on the left wing decreases.
		It will increase as the effective angle of attack on the left wing increases.

1. Which of the following does NOT change the static stability?

		A) Moving the location of the center of gravity
		Deflection of the elevator
		Change in the lift slope of the wing
		Change in the lift slope of the tail

1. Which of the following is called the elevator effectiveness?

		Derivative of the tail lift coefficient with respect to the elevator deflection angle
		Derivative of the wing lift coefficient with respect to the elevator deflection angle
		Derivative of the wing lift coefficient with respect to the angle of attack
		Derivative of the tail lift coefficient with respect to the angle of attack

=

1. Which of the following is a result of positive deflection of elevator?

		The trim angle of attack decreases
		The elevator moves upward
		The trim angle of attack increases
		The slope of the moment coefficient with respect to the angle of attack changes

1. When an aircraft cruises at maximum velocity, what is the most likely position of the elevator?

		Upward deflection
		Downward deflection
		Free
		Neutral position

1. When an aircraft is flying at very low speeds (e.g. during landing), what is the most likely position of the elevator?

		Neutral position
		Moving freely
		Downward deflection
		Upward deflection

Answer 1

Hello friend,

I am writing answers of these objectives one by one in a systematic manner-

1-(c)

2-(b)

3-(a)

4-(b)

5-(b)

6-(c)

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