Question

Stick-fixed condition is that

• A. The pilot holds the stick stationary and control surfaces are free to move
• B. The control surfaces are fixed relative to the stick
• C. The autopilot controls the aircraft
• D. The stick is disconnected from the controls

Hint:

Aircraft longitudinal stability is commonly analyzed under two conditions: \[ \boxed{ \begin{aligned} \text{Stick-fixed} &\rightarrow \text{Control surfaces fixed relative to the stick} \text{Stick-free} &\rightarrow \text{Control surfaces are free to float} \end{aligned} } \]

Answer 1

The Correct Option is B

Step 1: Recall the meaning of stick-fixed condition. In the stick-fixed condition, \[ \boxed{ \text{the control stick is held fixed, and the control surfaces remain fixed relative to it.} } \] No independent movement of the control surfaces occurs.

Step 2: Identify the correct statement. Therefore, \[ \boxed{ \text{The control surfaces are fixed relative to the stick.} } \] Hence, \[ \boxed{(B)} \] is the correct answer.