Engine Controls Flashcards
1
Q
Control systems on helicopter gate turbine engine are
A
- HP cock
- throttle ( fuel control unit )
- centrifugal governor
2
Q
Whats this :
- valve in fuel supply system
- must be open for fuel to enter the combustion chamber
- can be electrical or mechanical
- operated by switch or lever
A
HP Cock
3
Q
FCU ( throttle)
A
Provides control of speed from ground idle to flight idle
4
Q
Purpose of the centrifugal governer
A
Monitors and maintains the engine RPM set by the throttle
5
Q
Three types of cable controls
A
- Bowden
- teleflex
- bowdenflex
6
Q
What cable control is this :
Relies on a spring for return
A
Bowden
7
Q
What cable control is this :
- Operated in both tension and compression
- used to push and pull levers
- system is lubricated
A
Teleflex
8
Q
What cable control is this :
- withstand compression and tension
- withstand heat
- not lubricated
- routing requires bend = in only one direction
A
Bowdenflex
9
Q
Maintenance of mechanical controls
A
- Control runs = free from restrictions, correctly rigged
- rigging = follow relevant aircraft publications
- stops = check wear on control stops
- freedom of movement = whenever you have worked on controls check after that they move freely
- leak checks = any maintenance that disturbs HP cock , leak checks should be carried out
10
Q
Independent check
A
Authorised person checks
