Not What You Think Official on MSN

Why helicopters can stay in the air even after the engine dies

Most people assume a helicopter without engine power just falls. In reality, helicopters can enter autorotation, a power-off descent where upward airflow keeps the rotor turning, letting the pilot ...
insider.si.edu

Helicopter principles : lectures delivered to class XXXIV, the Naval Test Pilot School, Naval Air Test Center, Patuxent River, Maryland

"The helicopter lectures were inaugurated at the Naval Test Pilot Shool in 1961."--Foreword. Introduction to the helicopter -- Performance -- Stability and control -- Systems -- Vibrations -- VTOL and ...