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

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In a semi-rigid teetering rotor hub design, how are flapping movements of the main rotor blades accommodated during flight?

Each blade flaps independently around its own individual flapping hinge pin The entire rotor head teeters as a single unit around a central trunnion and teeter hinge pin Flapping motion is absorbed entirely through flexible composite elastomeric drag hinges Flapping movements are eliminated by rigid titanium root fittings

Correct Answer:

The entire rotor head teeters as a single unit around a central trunnion and teeter hinge pin

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