Aeronautics Knowledge Test: The 54h60-117, Dowty R391 Propeller Systems And Gtcp 165 Engine

79 Questions | Total Attempts: 141

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Aeronautics Knowledge Test: The 54h60-117, Dowty R391 Propeller Systems And Gtcp 165 Engine - Quiz

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Questions and Answers
  • 1. 
    Which 54h60-117 propeller propeller subassembly transmits engine torque to the propeller blades?
    • A. 

      Barrel

    • B. 

      Control

    • C. 

      Low pitch stop

    • D. 

      Pitchlock regulator

  • 2. 
    Which 54h60-117 propeller subassembly carries high centrifugal loads created by the propeller blades?
    • A. 

      Dome

    • B. 

      Barrel

    • C. 

      Control

    • D. 

      Front spinner

  • 3. 
    On the 54h60-117 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

  • 4. 
    On the 54h60-117 propeller, which pitchlock component mechanically holds the stationary and rotating pitchlock ratchets pitchlock ratchets apart during reversing and unfeathering operations?
    • A. 

      Pitchlock control cam

    • B. 

      Pitchlock ratchet piston

    • C. 

      Externally threaded ring

    • D. 

      Externally splined spacer ring

  • 5. 
    On the 54h60-117 propeller, what component is installed on the blade before the blade butt is formed during manufacture?
    • A. 

      Slip rings

    • B. 

      Microadjusting ring

    • C. 

      Roller thrust bearing

    • D. 

      Beveled thrust washer

  • 6. 
    On the 54h60-117 propeller, which dome assembly part allows the rotating cam to turn while the stationary cam remains in a fixed position?
    • A. 

      Roller shaft

    • B. 

      Track slopes

    • C. 

      Ball bearings

    • D. 

      Roller bearings

  • 7. 
    On the 54h60-117 propeller, which dome assembly component limits cam travel and prevents the propeller from exceeding feather and reverse blade angles?
    • A. 

      Rotating pitchlock ratchet

    • B. 

      Low pitch stop

    • C. 

      Stationary cam

    • D. 

      Stop ring

  • 8. 
    On the 54h60-117 propeller propeller, what functions is a task of the low pitch stop assembly?
    • A. 

      Prevents the propeller from going into 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 blade angle angles

    • C. 

      Prevents the blades from decreasing pitch if an overspeed condition occurs

    • D. 

      Transmits engine torque to the blades

  • 9. 
    On the 54h60-117 propeller, which component's purpose is to provide electrical circuits between the brush block assembly and the deicing elements of the blade assemblies?
    • A. 

      Control assembly

    • B. 

      Front spinner section

    • C. 

      Hub mounting bulkead

    • D. 

      Deicer contact ring holder

  • 10. 
    On the 54h60-117 propeller, during normal propeller operation, the output of which pumps is used?
    • A. 

      Main pressure and main scavenge

    • B. 

      Standby pressure and main savenge

    • C. 

      Auxiliary pressure and main scavenge

    • D. 

      Auxiliary pressure and auxiliary scavenge

  • 11. 
    On the 54h60-117 propeller, which pump(s) is/are used during propeller static operation?
    • A. 

      Main pressure

    • B. 

      Main scavenge

    • C. 

      Standby pressure and main scavenge

    • D. 

      Auxiliary pressure and auxiliary scavenge

  • 12. 
    On the 54h60-117 propeller, which cam disarms the NTS system linkage when the throttle is positioned in the beta range?
    • A. 

      Manual feather

    • B. 

      Beta follow-up

    • C. 

      Speed set

    • D. 

      Beta set

  • 13. 
    On the 54h60-117 propeller, which cam schedules a desired blade angle in the beta range?
    • A. 

      Beta set

    • B. 

      Beta follow-up

    • C. 

      Beta shaft rigging

    • D. 

      Alpha shaft rigging

  • 14. 
    On the 54h60-117 propeller, which valve connects the main, standby, and auxiliary pressure pumps' output to the increase pitch lines during negative torque conditions?
    • A. 

      High pressure relief

    • B. 

      Feather actuating

    • C. 

      Feather

    • D. 

      Pilot

  • 15. 
    On the 54h60-117 propeller, which valve assists the feather solenoid valve with hydraulic positioning of the feather and pilot valves?
    • A. 

      High pressure relief

    • B. 

      Feather actuating

    • C. 

      Standby

    • D. 

      Backup

  • 16. 
    On the 54h60-117 propeller, what switch, located in the valve housing, is opened by a cam from 81 to 85 degress propeller blade angle?
    • A. 

      Beta indicator

    • B. 

      Pressure cutout

    • C. 

      NTS

    • D. 

      PCBS

  • 17. 
    The 54h60-117 propeller governor speeder spring tension positions the pilot valve to maintain what percent  rpm in the beta range?
    • A. 

      104 to 108%

    • B. 

      114 to 118%

    • C. 

      99 to 103%

    • D. 

      109 to 113%

  • 18. 
    On the 54h60-117 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

  • 19. 
    On the 54h60-117 propeller, when the backup valve is opened, the hydraulic pressure routed to th governor pilot valve  is used for which operation?
    • A. 

      Pitchlock

    • B. 

      Standby

    • C. 

      Reverse

    • D. 

      Airstart

  • 20. 
    On the 54h60-117 propeller, which pressure pump is used to feather or unfeather the propeller during static propeller operation?
    • A. 

      Main

    • B. 

      Backup

    • C. 

      Standby

    • D. 

      Auxiliary

  • 21. 
    On the 54h60-117 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

  • 22. 
    On the 54h60-117 propeller, when standby pump output is not required, where is it routed?
    • A. 

      Atmospheric sump

    • B. 

      Pressurized sump

    • C. 

      Dome assembly

    • D. 

      Pilot valve

  • 23. 
    What type of force used during pitchlock of the 54h60-117 propeller prevents the blades from decreasing pitch?
    • A. 

      Spiral bending

    • B. 

      Thrust bending

    • C. 

      Centrifugal twisting moment

    • D. 

      Aerodynamic twisting moment

  • 24. 
    The purpose of the 54h60-117 propeller pitchlock assembly is to prevent?
    • A. 

      Loss of oil pressure

    • B. 

      Flow of hydraulic fluid to the pilot valve

    • C. 

      An engine overspeed due to a loss of power

    • D. 

      Engine overspeed due to a loss of hydraulic pressure

  • 25. 
    What prevents engagement of the stationary and rotating ratchets on the 54h60-117 propeller when blade angle are below 25 and 55 degrees?
    • A. 

      Loss of hydraulic pressure

    • B. 

      The pitchlock control cam

    • C. 

      An overspeed in excess of 103.5%

    • D. 

      Increase- or decrease pitch pressure

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