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Volume 3 Matching
Terms in this set (49)
Routes main pump pressure to hydraulically position the feather and pilot valves.
Feather Solenoid Valve
Has a rig pin receptacle every 5*
Beta Shaft Rigging Cam
When closed, it prevents the pressure cutout switch from stopping the auxiliary pump motor
Pressure Cutout Backup Switch
Contains the beta set cam and alpha shaft rigging cam
Primary component for controlling the flow of hydraulic fluid to and from the dome assembly
Propeller governor assembly
Assists the feather solenoid valve with positioning of the feather and pilot valves
Feather actuating valve
Contains the pressure cutout backup switch cam and beta backup valve cam
Maintains a pressure differential of 100 psi between the increase and decrease pitch sides of the pilot valve
Low-pressure Relief Valve
Combines the main, standby, and auxiliary pressure pumps' output to the increase pitch lines during propeller feathering.
Is positioned by the speeder spring or flyweights
Supplies fluid to the low-pressure relief valve and the outboard side of the dome piston
Cancels blade movement at the proper blade angle.
Beta follow-up cam
Changes speeder spring tension when the throttle is moved into the alpha or beta range
Speed set cam
Indicates when the propeller is in the beta range
Beta indicator cam
Transmits throttle lever movement to the input gear assembly
Input control lever assembly
Beta backup valve cam
Transfers NTS plunger movement to the feather valve linkage
NTS Control lever
Schedules a desired blade angle in the beta range
Beta set cam
Mechanically feathers the propeller
Manual feather cam
Relieves built up air pressure to prevent seals from leaking.
Limits system pressure to 1,300 psi above the pressurized sump pressure
High pressure relief valve
Reflect actual propeller RPM
Positions the pilot valve to maintain 100% RPM in the alpha range
Routes fluid to the governor pilot valve required to release the low pitch stop and to unfeather the propeller and reverse pitch operation.
Contains the various cams, valves, and switches that control the flow of hydraulic fluid to and from the dome assembly
Illuminated the NTS indicator light when closed
Throttle positions from aft of FLT IDLE to MAX RVS
Low speed ground idle switches
Arm the governor speed bias servo assemblies as the throttles are moved over the FLT IDLE gate
Synchrophaser disarming switches
Used to restart the engine in flight and for servicing and operational checkout on the ground
Provides reference signals to the electronic temperature datum amplifier proportional to the desired turbine inlet temperature
Temperature selecter potentiometer
Shut down the engines electrically in case of an emergency
Fire emergency handles
Control voltage to the auxiliary pump motors
Feather pump motor relays
Changes engine power and propeller blade angles simultaneously
De-energizes the starting circuits and shuts down the engine
Mechanically and electrically shuts down the engine
Contain a holding coil, which keeps the button engaged in order to feather the propeller
Propeller feather override buttons
Actuates a warning circuit if the throttles are restarted to landing speeds without the landing gear being extended.
Landing gear warning switch
Divides propeller operation into the alpha and beta ranges.
FLT IDLE gate
Connects the throttles and condition levers to the controls on the engines and propellers.
Throttle positions from FLT IDLE to TAKE OFF
Actuates switches in the quadrant for starting and running the engine.
Located on the left side of the coordinator.
Propeller output lever
Incorporates a protractor that indicates the same readings as the coordinator
Break the holding circuit of the low speed ground idle buttons when the throttles are advanced or retarted from the GROUND IDLE position
Select the operating condition of the engine
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