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Static directional stability describes an aeroplane's tendency to

  • A.Yaw back towards the relative wind
  • B.Roll back to wings level after a bank
  • C.Return to trim after a pitch disturbance
  • D.Maintain a constant airspeed

Answer: A

It is often called weathercock stability because the aeroplane behaves like a weather vane, turning to align itself with the flow. The property concerns the yawing axis alone, though it interacts strongly with the rolling behaviour.

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