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Analyzing how wake from one blade affects the next.
Principles of Helicopter Aerodynamics by J. Gordon Leishman: A Masterclass in Rotary-Wing Flight Analyzing how wake from one blade affects the next
During an engine failure, the pilot disengages the rotor from the transmission, allowing the blades to spin freely. As the helicopter descends, air flows upward through the rotor disk rather than downward. This upward airflow alters the aerodynamic force vectors on the blades: As the helicopter descends, air flows upward through
: The mechanical connection between the engine and the rotor disengages, allowing the upward flow of air to spin the blades like a windmill. Dynamic Stall and Compressibility Live simulation sandbox
To prevent the aircraft from rolling over, Leishman details how mechanical flapping hinges or aeroelastic blade flexibility allow the blades to flap up and down, naturally equalizing the lift across the disk. Dynamic Stall and Compressibility
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