题目内容

For a given flight condition, which of the following parameters are related to the longitudinal static stability（）

A. Wing camber
B. Tail volume ratio
CG location
D. Lift coefficient
E. Downwash angle
F. Tail dynamic pressure ratio

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The control effectiveness of elevator will under the ground effect（）

A. increase
B. decrease
C. remain unchanged
D. [ / ]

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On the mean aerodynamic chord, among the following four points, the most forward one is（）

A. Stick-fixed neutral point
B. Stick-free neutral point
C. Stick-fixed maneuver point
D. Stick-free maneuver point

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Wing contribution on longitudinal static stability depends on CG location, CG moves forward, the stability（）

A. decreases
B. increases
C. doesn’t change
D. depends on Mach number

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Which of the following factors is not related to the tail contribution on longitudinal static stability（）

A. Horizontal tail area
B. Distance between CG and horizontal tail aerodynamic center
C. Downwash angle of the horizontal tail
D. setting angle of the horizontal tail

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For a given flight condition, which of the following parameters are related to the longitudinal static stability（）

A. Wing camber B. Tail volume ratio CG location D. Lift coefficient E. Downwash angle F. Tail dynamic pressure ratio

The control effectiveness of elevator will under the ground effect（）

On the mean aerodynamic chord, among the following four points, the most forward one is（）

Wing contribution on longitudinal static stability depends on CG location, CG moves forward, the stability（）

Which of the following factors is not related to the tail contribution on longitudinal static stability（）

A. Wing camber
B. Tail volume ratio
CG location
D. Lift coefficient
E. Downwash angle
F. Tail dynamic pressure ratio