Aircraft Systems (69 questions)

Question 1

Select the helicopter component that, if defective, would cause MEDIUM-frequency vibrations.

Answer 1

TAIL rotor.

Question 2

While in level cruising flight in a helicopter, a pilot experiences LOW-frequency vibrations (100 to 400 cycles per minute). These vibrations are normally associated with the

Answer 2

MAIN rotor.

hint: lo mein

Question 3

The uncontrolled firing of the fuel/air charge in ADVANCE of normal spark ignition is known as

Answer 3

pre-ignition.

Question 4

Detonation may occur at high-power settings when

Answer 4

the fuel mixture ignites INSTANTANEOUSLY instead of burning progressively and evenly.

Question 5

During surface taxing, the COLLECTIVE pitch is used to control

Answer 5

rate of SPEED

Question 6

During surface taxiing, the CYCLIC pitch stick is used to control

Answer 6

ground track.

Question 7

If the grade of fuel used in an aircraft engine is lower than specified for the engine, it will most likely cause

Answer 7

detonation.

Question 8

Detonation occurs in a reciprocating aircraft engine when

Answer 8

the unburned charge in the cylinders EXPLODES instead of burning normally.