Unit 5 Review

What happens to the rotor system in a helicopter when the pilot raises or lowers the collective control?

• The engine goes to max power or idle

• The thrust of the tail rotor increases or decreases

• The pitch angle of the rotor blades increase or decrease as a whole unit

• The swash plate tilts right or left to alter the pitch of individual rotor blades

True or False. Pitch stability refers to the movement of an aircraft’s nose up and down around its lateral axis. (5.A.1)

• True

• False

Which of the following are the three axes of flight? Select the three answers that apply.

• Tail axis

• Longitudinal axis

• Forward axis

• Lateral axis

• Vertical axis

Which of the following are ways that a control input can be transmitted to a control surface? Select all that apply. (5.B.1)

• Hydraulic pressure

• Wind tunnels

• Electronic signals

• Anti-torque pedals

• Cable and pulley

How are flaps used during flight? Select all that apply. (5.B.2)

• They increase lift

• They are retracted at cruising altitude

• They reduce drag during takeoff

• They are retracted during descent

• They are extended during landing

Trim systems are designed to ____________. (5.B.2)

• relieve the pilot of the need to maintain constant pressure on the flight controls.

• increase the speed of the aircraft.

• decrease the fuel consumption.

• enhance the communication system.

When a leading edge device is lowered, it increases the wing’s __________. (5.B.2)

• center of gravity.

• camber.

• dihedral.

• all of the above

Which of the following is not a primary flight control surface? (5.B.1)

• Ailerons

• Flaps

• Elevator

• Rudder

Variable speed rotors controlled by onboard _______ provide stability and maneuverability for a multi-rotor UAS. (5.B.3)

• aileron

• cameras

• computers

• radios

How do quadcopters counteract the torque forces created by each of the four rotors? (5.B.3)

• Rotors that sit on opposite sides from one another spin in opposing directions

• All four rotors spin counter-clockwise

• The main body absorbs all torque forces

• A computer is used to limit the amount of torque from each rotor