Volume 4. Propellers And Small Gas Turbines

93 Questions | Total Attempts: 899

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Volume 4. Propellers And Small Gas Turbines

There is a seemingly endless list of crucial components within an aircraft, and today we’ll be testing you on two of them – propellers and small gas turbines! Think you know your stuff? Find out today!


Questions and Answers
  • 1. 
    Which 54H60-91 propeller subassembly transmits engine torque to the propeller blades?
    • A. 

      Barrel

    • B. 

      Control

    • C. 

      Low pitch stop

    • D. 

      Pitchlock requlator

  • 2. 
    On the 54H60-91 propeller, which component delivers the actual propeller blade angle from the blade to the control assembly?
    • A. 

      Microadjusting ring

    • B. 

      Beta feedback shaft

    • C. 

      Blade segment gear

    • D. 

      Blade bushing

  • 3. 
    On the 54H60-91 propeller, which is a function of the the pitchlock regulator?
    • A. 

      Stops the dome piston from increasing blade angle above 23.3

    • B. 

      Prevents the blades from decreasing pitch if hydraulic pressure is lost

    • C. 

      Prevents cam bearing rollers from bottoming out in the track slopes

    • D. 

      Prevents the propeller from going into the beta range when the throttle is positioned in alpha range

  • 4. 
    On the 54H60-91 propeller, which pitchlock component mechanically holds the stationary and rotating pitchlock ratchets apart during reversing adn unfeatherin operations?
    • A. 

      Pitchlock control cam

    • B. 

      Pitchlock ratchet piston

    • C. 

      Externally threaded ring

    • D. 

      Externally splined spacer ring

  • 5. 
    On the 54H60-91 propeller, which component is used in place of a shim plate on the No. 1 blade?
    • A. 

      Beveled thrust washer

    • B. 

      Stationary ratchet

    • C. 

      Beta segment gear

    • D. 

      Blade barrel shim

  • 6. 
    On the 54H60-91 propeller, which dome assembly part allow the rotating cam to turn while the stationary cam remains in a fixed postion?
    • A. 

      Roller shaft

    • B. 

      Track slopes

    • C. 

      Ball bearings

    • D. 

      Roller bearings

  • 7. 
    On the 54H60-91 propeller, what function is a task of the low pitch stop assembly?
    • A. 

      Prevents the popeller from goin in to the beta range when the throttle is positioned in the alpha range

    • B. 

      Limits cam travel and prevents the propeller from exceeding feather and reverse balde angles

    • C. 

      Prevents the blades from decreasing pitch if an overspeed condition occurs

    • D. 

      Transmits engine torque to the blades

  • 8. 
    On the 54H60-91 propeller, which component provides a means for balancing the propeller?
    • A. 

      Deicer cnotact ring holder

    • B. 

      Hub mounting bulkhead

    • C. 

      Front spinner

    • D. 

      Afterbody

  • 9. 
    On the 54H60-91 propeller, hydraulic fluid is directed from the directed from the pump housing to the barrel assembly through what component?
    • A. 

      Valve housing

    • B. 

      Low pich stop

    • C. 

      Transfer bearing

    • D. 

      Pitchlock regulator

  • 10. 
    On the 54H60-91 popeller, what is the function of the differential gear train assembly?
    • A. 

      Drives the main and standby pressure pumps

    • B. 

      Controls operation of the pilot valve and serves as an electrical ground

    • C. 

      Drives the rotation sleeve when the throttle is positioned in the beta range

    • D. 

      Transmits blade angle movement to the valve housin and drives the propeller governor flyweights

  • 11. 
    On the 54H60-91 propeller, during normal porpeller operation, the output of which pumps is used?
    • A. 

      Main pressure and main scavenge

    • B. 

      Standby pressure and main scavenge

    • C. 

      Auxiliary pressure and main pressure

    • D. 

      Auxiliary pressure and auxiliary scavenge

  • 12. 
    On the 54H60-91 propeller, which cam disarms the NTS system linkage when the throttle is positioned in teh beta range?
    • A. 

      Manual feather

    • B. 

      Beta follow up

    • C. 

      Speed set

    • D. 

      Beta set

  • 13. 
    On the 54H60-91 propeller, which valve, contained in the valve housing, controls the flow of hydraulic fluid to and from the dome assembly?
    • A. 

      Standby

    • B. 

      Feather

    • C. 

      Backup

    • D. 

      Pilot

  • 14. 
    The 54H60-91 propeller governor speeder spring tension positions the pilot valve to maintain what percent rpm in the beta range?
    • A. 

      99 to 103%

    • B. 

      104 to 108%

    • C. 

      109 to 113%

    • D. 

      114 to 118%

  • 15. 
    On the 54H60-91 propeller, when the throttle is moved to the GROUND IDLE position, what degree setting does the coordinator pointer indicate on the protractor?
    • A. 

      0*

    • B. 

      18*

    • C. 

      34*

    • D. 

      90*

  • 16. 
    Which switch, located in the control quadrant, activates the 54h-60-91 propeller governor speed bias servo assebly as the throttle is moved into the blight idle gate?
    • A. 

      Beta indicator

    • B. 

      Landing gear warning

    • C. 

      Low speed ground idle

    • D. 

      Synchrophaser disarming

  • 17. 
    The condition lever GND STOP position is only effective on the ground because the circuits made in this position are completed throw what switches?
    • A. 

      Landing gear touchdown

    • B. 

      Low speed ground idle

    • C. 

      Landing gear warning

    • D. 

      Air start

  • 18. 
    What component in the T56 engine coordinator provides reference signals to the electronic TD amplifier that are proportional to the desired TIT?
    • A. 

      Feather shaft

    • B. 

      Potentiomether

    • C. 

      65* microswitch

    • D. 

      66* microswitch

  • 19. 
    On the 54H60-91 propeller, the output of what pump is sufficient to supply hydraulic pressure for nomal propeller operation?
    • A. 

      Auxiliary pressure

    • B. 

      Standby pressure

    • C. 

      Backkup pressure

    • D. 

      Main pressure

  • 20. 
    On the 54H60-91 propeller, if the main filter becomes clogged, which valve opens to assure continued flow?
    • A. 

      Check

    • B. 

      Bypass

    • C. 

      Low pressure relief

    • D. 

      High pressure relief

  • 21. 
    On the 54H60-91 propeller, which valve sets and maintains a pressure differential of about 100 psi between system pressure and the increase- or decrease-pitch pressure?
    • A. 

      Check

    • B. 

      Bypass

    • C. 

      Low-pressure relief

    • D. 

      High-pressure relief

  • 22. 
    On the 54H60-91 propeller, when the backup valve is opened, the hydraulic pressure routed to the governoor pilot valve is used for which operation?
    • A. 

      Pitchlock

    • B. 

      Standby

    • C. 

      Reverse

    • D. 

      Airstart

  • 23. 
    On the 54H60-91 propeller, which pump is used to feather or unfeather the propeller during static propeller operation? 
    • A. 

      Main

    • B. 

      Backup

    • C. 

      Standby

    • D. 

      Auxiliary

  • 24. 
    On the 54H60-91 propeller, which type of valve opens to allow the output of the standby pump to combine with the output of the main pump?
    • A. 

      Check

    • B. 

      Bypass

    • C. 

      Low pressure relief

    • D. 

      High pressure relief

  • 25. 
    The purpose fo the 54H60-91 propeller pitchlock assembly is to prevent
    • A. 

      The loss of oil pressure

    • B. 

      An engine overspedd due to a loss of power

    • C. 

      The flow of hydraulic fluid to the pilot valve

    • D. 

      An engine ovespeed due to a loss fo hydraulic pressure