PLT259 PVTGROUND RESONANCE IS MOST LIKELY TO DEVELOP WHENA) ON THE...

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PLT259

PVT

Ground resonance is most likely to develop when

A) on the ground and harmonic vibrations develop between the main and tail rotors.

B) a series of shocks causes the rotor system to become unbalanced.

C) there is a combination of a decrease in the angle of attack on the advancing blade and an increase in the angle of attack on

the retreating blade.