Review # 2

Question 1

PURPOSE OF A GRADIENT UNIT

Answer 1

these gradient units are spring units that are compressed and released as movement of the control is made. (artificial feel)

Question 2

HOW IS GRADIENT UNIT INSTALLED IN A FLIGHT CONTROL CIRCUIT?

Answer 2

installed in conjunction with the control system, never as an integral part of the system.

Question 3

HOW IS GRADIENT UNIT USED AS TRIM UNIT?

Answer 3

relieves the required force to hold the cyclic, so that the aircraft remains in the trimmed attitude

Question 4

WHAT IS SPAN?

Answer 4

distance from blade root to blade tip measured along the centre line of the blade

Question 5

WHAT IS CHORD?

Answer 5

the distance from the leading edge to the trailing edge

Question 6

WHAT IS RELATIVE WIND?

Answer 6

always in the opposite direction of the flight path of blade and is calculated using the velocities of the blade, the aircraft and the local wind.

Question 7

WHAT IS PITCH ANGLE?

Answer 7

the acute angle between the chord line of the blade and a reference plane

Question 8

WHAT IS AOA?

Answer 8

the acute angle between the relative wind and the chord line of the blade

Question 9

What is produced by the blade and is perpendicular to the relative wind.

Answer 9

LIFT

Question 10

The greater the pitch angle the greater the ____ and the greater the ____.

Answer 10

LIFT & DRAG

Question 11

Drag is ______ to the relative wind and ______ to lift.

Answer 11

parallel, perpendicular