If the control stick of an aircraft with properly rigged flight controls is moved forward and to the right, the left aileron will move

Question

BlackTom AI · Accepted Answer

Push the control stick forward and to the right; the left aileron will deflect downward while the elevator’s trailing edge also moves downward.

1) Relevant knowledge points and concepts
- Ailerons control roll by changing lift on the wings: the aileron on the wing that should produce more lift deflects down (increasing camber and lift), while the aileron on the opposite wing deflects up (reducing lift).
- Elevator controls pitch: pushing the control stick forward moves the elevator to a trailing-edge-down position (on a conventional tailplane), which reduces the tail’s downforce and causes the nose to pitch down.
- “Properly rigged flight controls” means control linkages move the surfaces in their standard, expected directions.

2) Step-by-step reasoning
- Moving the stick to the right commands a right roll. To achieve a right roll, the right aileron must move up (reducing lift on the right wing) and the left aileron must move down (increasing lift on the left wing). Therefore the left aileron moves down.
- Moving the stick forward commands a nose-down pitch. With conventional elevator geometry, that input causes the elevator trailing edge to move down (the surface deflects downward).

3) Intermediate steps (mechanical chain)
- Pilot input → control column sideways motion → aileron push/pull linkages or cables → left aileron down, right aileron up.
- Pilot input → control column forward motion → elevator pushrod/cable → elevator trailing edge down.

4) Why the correct answer is correct
- The combination of right roll and nose-down pitch produces left aileron down (for right roll) and elevator down (for nose-down pitch), exactly matching “down and the elevator will move down.”

5) Why the other options are incorrect
- “up and the elevator will move down.” If the left aileron went up, that would reduce lift on the left wing and produce a left roll, opposite the commanded right roll.
- “down and the elevator will move up.” Elevator up corresponds to pulling the stick back (nose-up), which contradicts the forward stick input.

6) Conclusion
The correct choice is “down and the elevator will move down,” which matches the provided answer.

If the control stick of an aircraft with properly rigged flight controls is moved forward and to the right, the left aileron will move单项选择题

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