Day 2 Progress Check

Question 1

What is the primary purpose of rigging in helicopter assembly and maintenance?

Answer 1

Ensure the coordination and precise movement of flight controls

Question 2

What is the purpose of a freewheeling unit in a helicopter?

Answer 2

Allow the rotor to spin freely if the engine fails

Question 3

How do single-main rotor helicopters counteract torque?

Answer 3

Tail rotor and foot pedals

Question 4

What happens to lift when the angle of attack (AOA) of the rotor blades is increased during vertical flight?

Answer 4

Helicopter ascends

Answer 5

In the direction of tail rotor thrust

Question 6

How does a dual-rotor helicopter balance aerodynamic torque?

Answer 6

Two horizontal counter-rotating rotors

Question 7

What distinguishes a fully articulated rotor system from other rotor systems?

Answer 7

Each blade moves in three directions: pitch, lead-lag, and flap

Question 8

What is the effect of increasing the helicopter’s speed on the rotor blades’ movement and the rotor disc’s position?

Answer 8

Blades flap and cause the rotor disc to tilt backward

Question 9

Which force acts upward and adjusts with rotor tilt in a helicopter?

Answer 9

Lift

Question 10

What is the effect of gyroscopic precession on a helicopter’s main rotor?

Answer 10

Rotor disc tilts forward