1. the rotation of a helicopter’s rotor blades by the upward flow of air when the engine is not providing power, allowing for emergency landing
Usage: aviation
2. the automatic rotation of an object caused by aerodynamic forces
Usage: technical

Examples

• The pilot practiced autorotation maneuvers during flight training.
• In case of engine failure, the helicopter can land safely using autorotation.
• Autorotation allows the rotor to spin freely as air flows upward through it.
• The maple seed’s autorotation helps it travel farther from the parent tree.
• Emergency procedures include entering autorotation immediately after power loss.
• The instructor demonstrated how to control descent rate during autorotation.