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Microlight » Gyroplane Technical Knowledge » Pilot Induced Oscillation (PIO)

Pilot-Induced Oscillation (PIO) in a Gyroplane

Pilot-Induced Oscillation (PIO) or porpoising occurs when a pilot unintentionally causes the gyroplane to pitch up and down (nose rising and falling), by overcorrecting or reacting too late to the aircraft’s movements.

 

Contributing Factors:

  • Improper control technique (excessive forward or aft cyclic input).

  • Low-speed flight or turbulence, where rotor response is more sensitive.

  • High control sensitivity, such as in gyroplanes with light control forces.

  • Inexperience or delayed reaction time.

 

How it happens in a gyroplane:

  1. Pilot overreacts to aircraft motion

    • The gyroplane responds to turbulence, or gusts.

    • The pilot senses a deviation and applies control input.

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