AM Book Ch 11 Basic Actuating Systems

Question 1

What are the two types of actuating units used in Naval aircraft?

Answer 1

Actuating cylinders
Hydraulic Motors

Question 2

What is the purpose of an actuating cylinder?

Answer 2

To convert fluid under pressure into linear or mechanical motion

Question 3

11-1: What unit transforms hydraulic fluid pressure into mechanical force, which performs work
by moving some mechanism?

Answer 3

B. Actuating Unit

Question 4

11-2: Aircraft actuating cylinders are used when which of the following mechanism movements
are required?

Answer 4

C. Linear or mechanical motion

Question 5

11-3: If hydraulic pressure moves a single-acting actuating cylinder in only one direction, what force is used to move it in the opposite direction?

Answer 5

D. Spring Tension

Question 6

11-4: What type of motor converts hydraulic pressure into rotary mechanical motion?

Answer 6

B. Hydraulic Motor

Question 7

11-5: Hydraulic motors are commonly used to operate what aircraft equipment?

Answer 7

C. Radar and wing flaps

Question 8

11-6: To relieve pressure created by thermal expansion of the fluid, a system that has a balanced poppet-type selector valve must also incorporate what other type of valve?

Answer 8

A. A dump valve
B. A hydraulic fuse
C. A poppet type check valve
D. A thermal relief valve

Question 9

11-7: The poppets of a poppet-type selector valve are actuated by what means?

Answer 9

A. Hydraulic actuator
B. Hydraulic pressure
C. Spring tension
D. The cams on the camshaft

Question 10

11-8: When all four of the poppets of a poppet-type selector valve are held firmly seated by the springs and there is no fluid flow, the valve is in what position?

Answer 10

A. Neutral
B. Off
C. On
D. Return