HPI Helicopter Quiz

What are some practical applications of Helicopters?

• National Defense

• Transport

• Humanitarian Aid

• Search and Rescue

When was the first modern helicopter made?

• 1936

• 1945

• Ancient times

• 1957

What is the primary function/s of the rotor blades on a helicopter?

• Reduce air resistance

• Control the direction of flight

• Provide stability in flight

• Generate lift and thrust

What force acts opposite to rotor thrust?

• Drive Thrust

• Weight

• Rotor Drag

• Lift

What happens when the cyclic is pushed?

• Helicopter does nothing

• Helicopter moves sideways

• Helicopter moves forward

• Helicopter moves backwards

To compensate for dissymmetry in lift, we can

• Allow flapping

• Increase the rpm of the rotor disc

• Use collective feathering

• Allow translating tendency

Effective Translational Lift (ETL) typically occurs

• between 1 and 5 knots

• between 5 and 15 knots

• between 16 and 24 knots

• between 24 and 45 knots

Which surface has the best ground effect?

• Cool flat tarmac

• short grass

• Hot sloping tarmac

• water

The Robinson R22 tends to hover

• right skid low

• left skid low

• both skids level to the ground