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Helicopter Terminology Quiz

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Questions and Answers

Which force attracts a body toward its axis of rotation?

Centrifugal Force

VNE

Weight

Centripetal Force (correct)

What is VNE?

The apparent force that an object moving along a circular path exerts on the body

The force opposite centrifugal force

The force that attracts a body toward its axis of rotation

The speed beyond which an aircraft should never be operated (correct)

What is the direction of the centrifugal force?

Outward away from the center of rotation (correct)

Upwards

No direction

Inward towards the center of rotation

Which factor can affect the value of VNE?

Altitude Signup and view all the answers

What is the definition of centrifugal force?

The apparent force that an object moving along a circular path exerts on the body Signup and view all the answers

What is the direction of the centripetal force?

Inward towards the center of rotation Signup and view all the answers

What is the definition of VNE?

The speed beyond which an aircraft should never be operated Signup and view all the answers

Which force acts opposite to the centrifugal force?

Centripetal Force Signup and view all the answers

Which term refers to the movement of the rotor blades during rotation?

Blade Flap Signup and view all the answers

What is the imaginary circular plane outlined by the rotor blade tips called?

Tip-Path Plane Signup and view all the answers

What is the term used for the tendency of a helicopter to turn in the opposite direction of the main rotor rotation?

Torque Signup and view all the answers

Which term refers to the fore and aft movement of the rotor blade in the plane of rotation?

Blade Lag Signup and view all the answers

What is the movement of a helicopter about its lateral axis called?

Aircraft Pitch Signup and view all the answers

What is the movement of a helicopter about its longitudinal axis called?

Aircraft Roll Signup and view all the answers

What is the condition when an aircraft is in straight and level, unaccelerated flight called?

Steady-State Flight Signup and view all the answers

What does L/Dmax represent?

Total lift and total drag Signup and view all the answers

Study Notes

Forces in Helicopter Rotation

Centrifugal force attracts a body away from its axis of rotation.
Centripetal force attracts a body toward its axis of rotation.
Centripetal force acts opposite to the centrifugal force.

Helicopter Rotation Terminology

VNE (Never Exceed speed) is the maximum speed at which a helicopter should be operated.
The direction of the centrifugal force is away from the axis of rotation.
The direction of the centripetal force is toward the axis of rotation.
Factors affecting the value of VNE include air density, weight, and other environmental conditions.

Rotor Blade Movement

The imaginary circular plane outlined by the rotor blade tips is called the rotor disk.
The term "coning" refers to the movement of the rotor blades during rotation.
The fore and aft movement of the rotor blade in the plane of rotation is called "flapping".
The tendency of a helicopter to turn in the opposite direction of the main rotor rotation is called "torque".

Aircraft Movement

The movement of a helicopter about its lateral axis is called "roll".
The movement of a helicopter about its longitudinal axis is called "pitch".
Straight and level, unaccelerated flight is called "trim".
L/Dmax represents the maximum lift-to-drag ratio, which is a measure of an aircraft's efficiency.

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Description

Test your knowledge of helicopter terminology with this quiz! From payload and torque to blade flap and feathering, challenge yourself to see how well you know the ins and outs of helicopter components and movements.