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100 Cards in this Set
- Front
- Back
- 3rd side (hint)
Which propeller subassembly will retain the propeller blades? |
Barrel |
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What is the purpose of the front and rear cones? |
Provides torque transmission and alignment |
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What is a function of the pitchlock regulator? |
Prevents the blades from decreasing pitch if hydraulic pressure is lost |
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What function is a task of the low pitch stop assembly? |
Prevents the propeller from going into the beta range when the throttle is positioned in the alpha range |
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Which component provides a means for balancing the propeller? |
Hub mounting bulkhead |
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What is the function of the differential gear train assembly? |
Transmits blade angle movement to the valve housing and drives the propeller governor flyweights |
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During normal propeller operation, the output of which pumps is used? |
Main pressure and main scavenge |
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Which pump assists the main pressure pump when large blade angle movements are required? |
Standby pressure |
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Which cam disarms the negative torque signal (NTS) system linkage when the throttle is positioned in the beta range? |
Manual feather |
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Which cam cancels the beta set cam command and stops blade movement at the proper blade angle? |
Beta follow-up |
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Which valve, contained in the valve housing assembly, controls the hydraulic fluid flow to and from the dome assembly? |
Pilot valve |
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Which valve joins the main, standby, and auxiliary to increase pitch during negative torque conditions? |
Feather valve |
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Which valve assists the feather solenoid valve with positioning of the feather and pilot valves? |
Feather actuating valve |
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Which switch located in the valve housing is opened by a cam from 81° to 85° propeller blade angle? |
Pressure cutout back up switch |
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In the control quadrant, the throttle lever gate that seperates the alpha and beta ranges represent the... |
Lowest possible power setting for flight |
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What switch in the control quadrant activates the governor speed bias servo when the throttle moves to flight idle gate? |
Synchrophaser disarming |
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The output of what pump is sufficient to supply hydraulic pressure for normal propeller operation? |
Main pressure pump |
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If the main filter becomes clogged, which valve opens to assure continued flow? |
Bypass valve |
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Which valve sets and maintains a pressure differential of about 100 pounds per sqaure inch (psi) between system pressure and the increase- or decrease-pitch pressure? |
Low-pressure relief valve |
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When standby pump outpump is not required, where is it routed? |
Pressurized sump |
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Between the blade angles of 25° and 55°, what will keep the rotating and stationary ratchets disengaged? |
Increase- or decrease-pitch pressure |
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What is coordinated by the throttle in the controllable pitch range? |
Propeller pitch and engine fuel flow |
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Constant speed can only occur when the throttle is position from... |
FLT IDLE to TAKE OFF |
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During beta range operation, the rotation of which cam moves the mechanical linkage to center the governor pilot valve? |
Beta follow-up cam |
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Once on overspeed condition is corrected and the pilot valve is returned to the center position, what is the result? |
Propeller is on-speed |
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During an underspeed condition, what moves the pilot valve? |
Speeder spring |
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During feathering operation, the feather valve is positioned to meter hydraulic fluid to where? |
Forward end of the dome piston |
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Which valve is a backup in case feather valve fails during feathering operation? |
Feather actuating |
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During propeller feathering operation, which valve blocks off the standby pump output and causes hydraulic pressure to increase? |
Feather actuating valve |
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During feather operation, between approximately what pounds per square inch (psi) are the pressure cutout switch contacts opened? |
600 to 800 psi |
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When attempting to unfeather the propeller in flight, where must the throttle be positioned? |
Above FLT IDLE |
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Which two cams, on the alpha shaft, control the propeller unfeathering operations? |
Manual feather and beta set cams |
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What is the minimum pounds per square (psi) required to release the feather lugs on the stop ring from the feather latches and allow the piston to move forward?
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200 psi |
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During propeller unfeathering in flight, when is the condition lever released to RUN position? |
Engine revolutions per minute (rpm) reaches lightoff |
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After negative torque signal (NTS) system actuator rod positions the mechanical linkage in the valve housing when negative torque condition occurs, what component is shifted? |
Feather valve |
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What can result when propellers maintain identical phase angles? |
High levels of beat noise and vibration |
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Which switch has a spring-loaded guard to hold it in NORMAL position? |
Propeller governor control |
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Where is the pickup portion of the pulse generator located? |
Stationary pump housing |
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The pulse generator inputs to the synchrophaser unit are used only... |
When a master propeller is selected |
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The master synchrophaser board, located in the synchrophaser unit, contains a master channel and a slave channel. Which propellers use there channels? |
No. 2 and No. 3 |
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Which of the following components in the synchrophaser unit receive input signals that are compared together, modified, and used to control the speed bias motors? |
Four power amplifier boards |
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How much change in revolutions per minute (rpm) does the compensating network in the synchrophaser unit allow the speed bias motor to correct? |
2% |
#% |
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In the mechanical governing mode, what caused the pilot valve to move and set propeller speed? |
Speeder spring or flyweights |
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For the propeller to maintain 100 +/- 0.25% revolutions per minute (rpm) in the mechanical governing mode, there must be a balance of force between the... |
Governor flyweights and speeder spring tension |
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When an increase in revolutions per minute (rpm) occurs during engine speed stabilization, how is a overspeed condition prevented? |
Decrease speeder spring tension and position the pilot valve to increase blade angle |
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If the slave propeller blades are in the optimum phase angles during the synchrophasing mode of governing, the resultant phase error voltage is _ |
0 |
# |
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If you forget to pull the synchrophaser circuit breakers during propeller removal, it may cause... |
Damage to the synchrophaser unit |
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If the mission requires you to remove a propeller while it is snowing, what could you do to prevent precipitation from entering the propeller? |
Request the aircraft be hangered |
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If you find the torque is less than 1,000 foot-pounds when accomplishing the propeller retaining nut torque check, what must be done? |
Remove the propeller from service |
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If there are two lines marked on adjacent teeth of the stationary pitchlock ratchet, install the ratchet so the lines straddle the etch mark on the propeller's ______ |
Barrel |
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If the clearance is not within limits when performing the pulse generator gap check, you will need to remove or add laminated shims under the... |
Magnet and counterweight |
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When installing the control assembly, how much should you loosen each beta shaft adjustment screw? |
One turn counterclockwise |
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During control assembly installation, what must you do if there is tooth-on-tooth contact between the idler gear outer race and the beta feedback shaft? |
Separate the control from the propeller enough to gain access, and rotate idler gear outer race slightly |
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If the blade angle for the No. 1 blade is set at 92.5° during valve housing installation, at what degree setting do you pin the beta shaft? |
90° |
##° |
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To access the anti-backslash adjusting screw on the valve housing cover, you must rotate the... |
Control input lever to REVERSE |
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How many sides must be disassembled on the propeller standby filter? |
2 |
# |
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Which special tool is used to accomplish the condition lever pull check? |
Spring scale |
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What is the specified length for the condition control link? |
4.50 inches |
#.## inches |
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After installing a rig pin in the prop control rear arm during engine coordinator-to-propeller rigging, what must you adjust if a second rig pin does not fit through the intermediate bellcrank and the reduction gear case? |
Prop control intermediate link |
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After you insert the first rig pin through the intermediate bellcrank when rigging the control input lever at the flight idle position, you are required to insert a second rig pin through the FLIGHT IDLE slot of the control input index plate. If the second rig pin cannot be freely inserted, then you should adjust the prop control ___ |
Rod |
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Which static propeller adjustment coordinates the best feedback gearing with the beta shaft in the valve housing? |
Backup valve blade angle indicator |
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Which static propeller check adjusts the beta feedback linkage to center the governor pilot valve at a certain negative blade angle? |
Reverse stop |
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The beta lights indicate when the propeller is in the beta ground idle range, and extinguish at approximately what degree of blade angle? |
15° |
##° |
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Approximately how many degrees will each full turn off the low pitch stop assembly change the blade angle settings? |
3° |
#° |
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When performing the mechanical governing adjustment, how many clicks and in what direction would you turn the adjusting screw to decrease revolutions per minute (rpm) 1.5%? |
6 clicks, counterclockwise |
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Which operational check is necessary for establishing a proper relationship between the mechanical governing system and the normal governing system? |
Synchrophaser indexing |
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Which operational check is accomplished to ensure the slave propeller will follow the selected master propeller? |
Synchrophaser operational check |
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During the fuel governing and pitchlock check, the throttle must not be retarded below what percent revolutions per minute (rpm) or the engine could flameout? |
96% |
##% |
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When pitchlock does not occur when performing a fuel governor and pitchlock check, which component is the primary cause? |
Stationary pitchlock ratchet |
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Which type of special inspection can be used to find minute cracks on propeller blade? |
Dye penetrant |
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When performing the fluid leakage inspection, what is the hydraulic fluid leak limit from the control assembly whether it is running or static? |
One drop every 45 seconds |
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What should be done if an impact caused the propeller to stop rotating? |
Remove the propeller assembly from service before next engine run |
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If a nick is found on the metal portion of the blade when performing a blade inspection, which tool is used to measure the depth of the damage? |
Depth micrometer |
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The term "No. 320 grit" refers to which feature of sandpaper? |
Coarseness |
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When performing blade repair, if blade damage was due to propeller blade impact, you must remove all traces of the damage, and then, using emery cloth, remove an additional _____ ____ |
0.002 inch. |
#.### inch |
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When the ambient temperature is less than 65°F and a patch is bonded to the blade fairing, what minimum drying time before running the propeller on the aircraft engine? |
7 days |
# days |
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Which area should you keep your fingers away from to prevent them from being crushed, after removing the dome shell during inner piston replacement? |
Cam tracks |
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Which propeller hydraulic tester valve(s) can be used to direct inboard or outboard hydraulic fluid being returned from propeller to the flow meter? |
4-way selector |
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If you only need to balance one propeller when using the 192A spectrum analyzer, which piece of equipment is not required? |
Switch box |
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What two factors are used to determine the amount of weight needed to dynamically balance the propeller? |
Magnitude of vibration and propeller angular position |
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When balancing two propellers, velocimeters are secured to forward side of the reduction gearboxes (RGB) at what position (as viewed from the rear)? |
9 o'clock |
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Propeller balancing is not required if the propeller imbalance is at or below what level? |
0.2 inches per second squared (IPS) |
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After calculating the required weight change for propeller balancing, on which propeller component are the weights to be added or removed? |
Huh mounting bulkhead |
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What principle of physics depends on the use of magnetic field, electrical conductors, and relative motion? |
Electromagnetic induction |
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How does a parallel circuit differ from a series circuit? |
A parallel circuit has two or more paths for current flow and each individual circuit is connected to common terminal points; a series circuit has one basic path in which all the electrical components are connected end-to-end to one terminal |
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The purpose of circuit protective devices is to... |
Protect the electrical parts and wiring from an amperage overload |
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What does the insert arrangement of an electrical connector (cannon plug) identify? |
Number of pin contacts |
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The Fluke 8025A multimeter has ____ _____ ________ |
Four range settings |
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The purpose of electrical symbols on wiring diagrams is to identify the electrical __________ |
Components |
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What does the number 20 identify in an electrical wire with the code 1K56A20N? |
Wire size |
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The propeller anti-icing and deicing system is used to prevent and remove ice that could cause... |
A reduction in airfoil efficiency |
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Which phase of alternating current (AC) power is sent to heat the first seven inches of the front spinner and the afterbody assemblies? |
A |
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The low fluid level warning system is activated when the propeller fluid level is approximately how low? |
2 quarts |
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To find out which propeller is low when the propeller low oil quantity light illuminates, you would check the propeller low oil warning... |
lights on the copilot's side shelf |
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When performing blade repair because a burn damage, you must remove all traces of the damage, and then, using emery cloth, remove an additional _____ ____ |
0.020 inches |
#.### inches |
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When installing the control assembly, what is used to lubricate the inside diameter of the control lip seals and the outside diameter of the barrel extension? |
Petrolatum |
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If the temperature of the hydraulic tester heaters rises to 170°F, which valve will actuate to admit cooling water to the coils in the tank to cool the fluid? |
Solenoid |
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When performing the feather angle setting test using the hydraulic tester, the feather angle of each blade must be within how many degrees of the 92.5° feather angle setting with the correction factors applied? |
.20° |
.##° |
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When calculating the reverse blade angle limits during propeller hydraulic testing, the range of the dome stop ring is between ___ ___ ___ |
100° and 102° |
###° and ###° |
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During propeller dynamic balancing, what components provide the propeller balance analyzer its two inputs? |
Velocimeter and magnetic pulse generator |
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