Helicopter Operations Quiz

Ground resonance occurring when rotor RPM is within operating limits can be alleviated by:

• compensating for helicopter movement with cyclic control.

• avoiding any control input until all vibration has ceased.

• applying collective Pitch and Lifting Off.

• applying the rotor brake as rapidly as possible.

In a helicopter with manual throttle, if the main rotor is overpitched, the corrective action is to:

• reduce engine power and leave collective pitch constant.

• reduce both engine power and collective pitch.

• increase engine power and collective pitch.

• reduce Collective pitch and Increase Engine power.

When overpitching in a helicopter, a possible consequence will be:

• a more effective main rotor.

• a lower coning angles.

• an increase in rate of climb.

• a higher Coning Angles.

A helicopter in forward flight suffers a tail rotor failure. The correct action is:

• Reduce Collective.

• pitch nose forward using cyclic.

• close throttle.

• apply lateral cyclic.

If the engine fails in the hover, at 3 ft skid height in still air, in a single engine helicopter, the recommended action is:

• counteract yaw with Pedals, maintain Position with cyclic, Cushion touchdown with Collective.

• use left rudder to prevent yaw, push cyclic forward for touchdown, lower collective to cushion landing.

• use rudder to prevent yaw, hold cyclic steady, lower collective briefly then raise to cushion landing.

• counteract yaw with pedals, use cyclic to raise tail rotor, lower collective slightly to maintain rotor rpm.

What are the best actions to take in order to recover from retreating blade stall?

• reduce collective, Reduce airspeed, and Reduce the severity of the Maneuvers.

• increase collective, increase airspeed, and increase the severity of the maneuvers.

• reduce collective, increase airspeed, and reduce the severity of the maneuvers.

• increase collective, reduce airspeed, and reduce the severity of the maneuvers.

What recovery actions should be taken in the event of entry into vortex ring state?

• apply lateral cyclic, lower the collective.

• apply forward cyclic, raise the collective.

• apply forward cyclic, Lower the collective.

• apply aft cyclic, raise the collective.

Which type of rotor system is least likely to suffer ground resonance?

• Rigid.

• fully articulated.

• semi-rigid.

• teetering head.

In the event of an engine failure in a single engine helicopter in the cruise, the recommended sequence of immediate actions is:

• lower collective, counteract yaw with pedals, select attitude for appropriate airspeed with cyclic, Select landing site, Transmit mayday, Position helicopter for an into Wind Landing.

• select airspeed, lower collective, adjust yaw pedals, transmit mayday, autorotate to open ground, adjust speed for landing.

• correct yaw with pedals, lower collective, transmit mayday, select landing site, use cyclic and collective to position for landing.

• flare with cyclic, counteract yaw with pedals, establish descent with collective, select landing site, adjust collective for range, land into wind, transmit mayday.

Should a helicopter suffer from retreating blade stall in flight, to reduce the effects:

• the cyclic control should be pulled back to decrease speed in a flare maneuver.

• the cyclic control should be pushed forward to increase speed.

• the collective pitch should be increased.

• the collective pitch Should be Reduced.