Aerospace Propulsion Volume 4

which prop subassembly transmits engine torque to the prop blades

on the prop which component delivers the actual prop blade angle from the blade to the control assembly

on the prop which is a function of the pitchlock regulator

on the prop which pitchlock component mechanically holds the stationary and rotating pitchlock ratchets apart during reversing and unfeathering operations

on the prop which component is used in place of a shim plate on the no.1 blade

on the prop which dome assembly part allows the rotating cam to turn while the stationary cam remains in a fixed position

on the prop what function is a task of the low pitch stop assembly

on the prop which component provides a means for balancing the prop

on the prop, hydraulic fluid is directed from the pump housing to the barrel assembly through what component

on the prop what is the function of the differential gear train assembly

on the prop during normal prop operation the output of which pumps is used

which pump assists the main pressure pump when large blade angle movements are required

which cam disarms the NTS system linkage when the throttle is positioned in the beta range

which valve contained in the valve housing controls the flow of hydraulic fluid to and from the dome assembly

the prop governer speeder spring tension positions the pilot valve to maintain what percent rpm in the beta range

when the throttle is moved to the ground idele position, what degree setting does the corrdinator pointer indicate on the protractor

what switch located in the control quadrant activates the prop governor speed bias servo assembly as the throttle is moved into the flight idle gate

the condition lever gnd stop position is only effective on the ground becuase the circuits made in this position are completed through what switches

what component in the t56 engine coordinator provides reference signals to the electronic TD amplifier that are proportional to the desired TIT

the output of what pump is sufficient to supply hydraulic pressure for normal prop operation

if the main filter becomes clogged which valve opens to assure continued flow

which valve sets and maintains a pressure differential of about 100 psi between system pressure and the increase or decrease pitch pressure

when the backup valve is opened the hydraulic pressure routed to the governor pilot valve is used for which operation

which pump is used to feather or unfeather the prop during static prop operation

which type of valve opens to allow the output of the standby pump to combine with the output of the main pump

the purpose of the prop pitchlock assembly is to prevent

what prevents engagement of the stationary and rotating ratchets at blade angles below 25 and above 55

between the blade angles of 25 and 55 what will keep the rotating and stationary ratchets disengaged

the function of the low pitch stop is to prevent the

what forces the stop levers on the low pitch stop to move outward

when pressure builds to between 240 and 280 psi which valve is unseated and allows the stop levers to retract

what is coordintated by the throttle i the controllable pitch range

during beta range operation what moves the pilot valve

during beta range operation the rotation of which cam moves the mechanical linkage to center the governor pilot valve

during alpha range operation which cam changes speeder spring tension so the governor pilot valve can maintain 100 % rpm

during an underspeed condition what moves the pilot valve

when feathering the prop what acts on the mechanical linkage to open the feather actuating valve

during feathering operation the feather valve is positioned to meter hydraulic fluid to the

which valve is a backup in case the feather valve fails during feathering operation

as the prop feathers, the output of which pump decreases

during feather operation between approximately what psi are the pressure cutout switch contacts open

which component is the primary electrical ground for energizing the feather override holding coil

when attempting to unfeather the prop in flight where must the throttle be positioned

which two cams on the alpha shaft control the prop feathering operation

what is the minimum psi required to release the feather latches and allow the piston to move forward

after the NTS system actuator rod positions the mecanical linkage in the valve housing when a negative torque condition occurs, what component is shifted

besides maintaining the optimum blade angle relationship between all props, what else does synchrophasing do

the fuel governing check switches are used to reset the prop governor to what percentage of rpm in the alpha range

where is the pickup portion of the pulse generator located

the pulse generator inputs to the sychrophaser unit are used only when

on the prop speed bias motor, when the ctontrol winding voltage is different from the reference winding voltage, what results

the master synchrophaser board located in the synchrophsaser unit contains a master channel and a slave channel. these channels are used by which props

which board in the synchrophaser unit recieves input signals that are compared together, modified, and used to control the speed bias motors

how much change in rpm does the compensating network in the synchrophaser unit allow the speed bias motor to correct

in mechanical governing mode what causes the pilot valve to move and set prop speed

mechanical governing provides the foundation for what other prop governing modes

which is a function of normal governing

for the prop to operate in the normal governing mode, the prop governor control switch must be placed in the normal position and what other conditions must be met

during normal governing operation what stabilizes the prop governor during rapid throttle movements

to reduce the noise and vibration levels, synchrophsing mode of governing maintains all the props at

how many slave channels are contained on the master synchrophaser board in the synchrophaser unit

if the master prop fails during synchrophaser governing the slave props follow the master to

which type of special inspection can be used to find minute cracks on a prop blade

when performing a loose blade inspection on the prop, fore-and-aft play should not exceed

when performing the blade tracking inspection on the prop the calculated difference in blade tracks should not exceed what limit

when you perform a static blade transition check and abnormal noises are detected the prop must be returned to depot. what form must be documented and accompany the prop back to depot

if a nick is found on teh mental protion of the blade when performing a blade inspection, which tool is used to measure the depth of the damage

the term "NO. 320 grit" refers to which feature of sandpaper

when performing blade repair if blade damage was due to prop blade impact you must remove all traces of the damage and then using emery cloth remove an additional

when the ambient temp is greater than 65*F and a patch is bonded to the blade fairing, what is the recommended drying time before running the repaired prop on the aircraft engine

on the prop when repairing a prop blade heater, what is the maximum number of wires that can be spliced in any one heater

to avoid being crushed after removing the dome shell during dome piston seal replacement, you should keep you fingers away from the

after the new packings are in place during dome piston seal replacement, you need to turn them so what color faces outward

during prop dynamic balancing the prop balance analyzer receieve its two inputs from

to calculate th required weight change when you use the 192A spectrum analyzer, you will need to plot the data on a

when balancing a prop the velocimeter is secured to the forward side of the RGB at what position(as viewed from the rear)

prop balancing is not required if the prop imbalance is at or below what level

what dowty prop component translates piston and shaft movement to vary prop blade angle

which dowty prop component routes engine oil to and from the cylinder and piston

what dowty prop assembly part provides an aerodynamic faring over the aft section

which component controls the dowty prop blade angle by directing engine oil flow through the beta tube to the cylinder and piston

for the dowty prop what components relay prop blade angle to the FADEC units

for the dowty prop, the feather valve is located inside the

for the dowty prop, what component provides the blade angle feedback to the FADEC by two RVDTS

for the dowty prop, during flight operation what directs the PCU to meter fine and coarse pitch oil to maintain 1020.7 RPM

on the dowty prop, what does the DITU use to monitor itself for malfunctions

The pneumatic air bled from the small gas turbine engine cannot be used to

when used for ground operation, the SGT engine can be installed on

on an GTCP165 engine, air is compressed by the single stage centrifugal compressor assembly and then discharged into

the impeller wheel and two turbine wheels in the turbine section of the GTCP165 engine are connected by

on an GTCP165 engine, the accessory drive section forward housing provides mounts for the components, which include fuel control unit, oil pump assembly, oil filter element, vane-axial fan assembly, and

on the GTCP165 engine, turbine discharge temperature is controlled by the

on the GTCP165 engine, which signals are used by the fuel control unit to control engine operation

on GTCP165 engine shutdown, what valve closes to ensure fuel flow is terminated

what type of sump design is the oil system on a GTCP165

on a GTCP165 engine, what component shuts the engine down if the oil pressure drops below the safe minimum operating limit

on a GTCP165 engine oil system, air that leaks past various oil seals exits through the

on a GTCP165 engine, the speed switch control does not control the engine during

during normal GTCP165 engine shutdown, what circuit trips to stop the engine

the modulating and shutoff valve on a GTCP165 engine will be fully open at what percent rpm