Module 2

Question 1

It is to convert stationary control inputs from the pilot into rotating inputs which can be connected to the rotor blades or control surfaces.

Answer 1

swash plate

Question 2

Two main parts of Swash Plate Assembly

Answer 2

Stationary swash plate
Rotating swash plate

Question 3

It is mounted around the main rotor mast and connected to the cyclic and collective controls by a series of pushrods.

Answer 3

Stationary Swash Plate

Question 4

It is restrained from rotating by an anti drive link but can tilt in all directions and move vertically.

Answer 4

Stationary Swash Plate

Question 5

It is mounted to the stationary swash plate by means of a uni ball sleeve.

Answer 5

Rotating Swash Plate

Question 6

It is connected to the mast by drive links and must rotate in constant relationship with the main rotor mast.

Answer 6

Rotating Swash Plate

Question 7

They tilt and slide up and down as one unit.

Answer 7

Stationary and Rotating Swash Plate

Question 8

It is connected to the pitch horns by the pitch links.

Answer 8

Rotating Swash Plate

Question 9

It is automatically disengages the engine from the main rotor when engine revolutions per minute (rpm) is less than main rotor rpm.

Answer 9

freewheeling unit

Question 10

This allows the main rotor and tail rotor to continue turning at normal inflight speeds.

Answer 10

Freewheeling unit

Question 11

This prevents the engine from exceeding transmission rpm. If the engine fails, the rollers move inward, allowing the outer drum to exceed the speed of the inner portion. The transmission can then exceed the speed of the engine. In this condition, engine speed is less than that of the drive system, and the helicopter is in an auto rotative state.

Answer 11

Sprag clutch

Question 12

It transfers power from the engine to the main rotor, tail rotor, and other accessories during normal flight conditions.

Answer 12

Transmission system

Question 13

Main components of the transmission system

Answer 13

main rotor transmission
tail rotor drive system
clutch
freewheeling unit

Question 14

They are normally lubricated and cooled with their own oil supply.

Answer 14

Helicopter transmission

Question 15

It is provided to check the oil level. Some transmissions have chip detectors located in the sump. These detectors are wired to warning lights located on the pilot’s instrument panel that illuminate in the event of an internal problem.

Answer 15

Sight gauge

Question 16

It is self locking prove with a permanent ceramic magnet at the end.

Answer 16

Chip Detector

Question 17

Inner part of the sprag clutch

Answer 17

RPM of engine

Question 18

Outer part of sprag clutch

Answer 18

RPM go to the transmission

Question 19

How many chip detectors in single engine?

Answer 19

6 (six)

Question 20

How many chip detectors in twin engine?

Answer 20

8 (eight)

Question 21

It assembly consists of a one-way sprag clutch located between the engine and main rotor transmission.

Answer 21

Freewheeling unit

Question 22

This is usually in the upper pulley in a piston helicopter or mounted on the accessory gearbox in a turbine helicopter. When the engine is driving the rotor, inclined surfaces in the sprag clutch force rollers against an outer drum.

Answer 22

Freewheeling unit

Question 23

located between the engine and main rotor transmission

Answer 23

ONE-WAY SPRAG CLUTCH