SACAA CPL(H) Aircraft Technical & General Practice Questions - SACAA Commercial Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam

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How do modern rigid (hingeless) rotor systems accommodate blade flapping and lead-lag stresses without mechanical hinge pins?

Through flexible composite structural elements at the blade root that flex under aerodynamic loads By relying on automatic hydraulic pressure redistribution within the swashplate actuators By utilizing variable geometry mast extensions that tilt according to air density By mounting the entire main gearbox on flexible rubber isolators that swivel in flight

Correct Answer:

Through flexible composite structural elements at the blade root that flex under aerodynamic loads

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