The helicopters threes

Question 1

What are the three things that combined together will lead to a Dynamic Rollover situation?

Answer 1

Pivot point, rolling momentum, and exceeding the critical rollover angle

Question 2

What are the three stages of a thunderstorm?

Answer 2

Cumulus, mature, and dissipating

Question 3

What is the onset of retreating blade stall?

Answer 3

There will be abnormal vibration

The nose will begin to pitch up

The helicopter will start a roll to the left, (in a counter clockwise rotor system)

Question 4

Why does the nose pitch up during retreating blade stall?

Answer 4

The nose pitches up due to Gyroscopic Precession

Question 5

What is gyroscopic procession?

Answer 5

Gyroscopic procession is when a force is applied to a spinning object. It is felt 90 degrees later in the plane of rotation.

Question 6

What are the three types of icing?

Answer 6

Time, Clear, and Mixed

Question 7

The three types of rotor systems are?

Answer 7

Fully articulated
Rigid
Semi rigid