HELICOPTERS

Question 1

The rotor wings, or rotor blades, are attached to the __________.

Answer 1

Mast

Question 2

Major components of modern helicopters.

Answer 2

Airframe
Fuselage
Landing Gear
Powerplant
Transmission
Main Rotor System
Tail Rotor System

Question 3

Transfers power directly to the main and tail rotor systems.

Answer 3

Transmission

Question 4

Provides the aerodynamic forces necessary to fly.

Answer 4

Main Rotor System

Question 5

An anti-torque component that keeps the helicopter from turning due to torque.

Answer 5

Tail Rotor System

Question 6

Newton’s third law of motion states…

Answer 6

…“To every action, there is an equal and opposite reaction.”

Question 7

When a helicopter is hovering, it has a tendency to…

Answer 7

…drift laterally to the right caused by the lateral thrust supplied by the rotor.

Question 8

The pilot may prevent lateral drift by tilting the…

Answer 8

…main rotor to the left, which counteracts the tail rotor thrust to the right.

Question 9

The rotor system produces…

Answer 9

…centrifugal and centripetal force.

Question 10

Has a propensity to make rotating bodies move away from the center of rotation.

Answer 10

Centrifugal Force

Question 11

__________ counteracts __________ by keeping rotating bodies a certain radius from the center of rotation.

Answer 11

Centripetal Force
Centrifugal Force

Question 12

The Coriolis Effect is also known as…

Answer 12

…the law of conservation of angular momentum.

Question 13

The Coriolis Effect states…

Answer 13

…that an object will have the same velocity of momentum unless acted upon by an external force.

Question 14

__________ accelerates as a rotating body moves closer to he axis of rotation.

Answer 14

Angular Momentum

Question 15

As rotator blades move around their axis of rotation…

Answer 15

…there is a slight change in diameter due to the blades flapping.

Question 16

The changes in diameter due to the blades flapping creates a small __________ resulting in __________.

Answer 16

acceleration and deceleration of the rotational velocity

fluctuations in lift

Question 17

The phenomenon in which force applied to a rotating object is manifested 90 degrees later in the direction of rotation.

Answer 17

Gyroscopic Precession

Question 18

Controls used to handle a helicopter.

Answer 18

Collective Pitch Control
Cyclic Pitch Control
Anti-Torque Pedals
Throttle Control

Question 19

Used to change the pitch angle of the main rotor blades simultaneously.

Answer 19

Collective Pitch Control

Question 20

As the pitch angle of the blade increases, __________ drag occurs.

Answer 20

More

Question 21

As the pitch angle of the blade decreases, __________ drag occurs.

Answer 21

Less

Question 22

__________ blade speed helps generate lift.

Answer 22

Faster

Question 23

Used to fly the helicopter forward, backward, left, and right.

Answer 23

Cyclic Pitch Control

Question 24

Used to change the pitch of the tail rotor blades, increasing or decreasing tail rotor thrust in a desired direction.

Answer 24

Anti-Torque Pedals

Question 25

Used to control the power of the engine and ensures that the rotational speed of the rotor blades is in a desired range.

Answer 25

Throttle Control

Question 26

Ty

Answer 26

Ty