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Propellers (2)
16問 • 1年前
  • ユーザ名非公開
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    問題一覧

  • 1

    Apparent engine roughness is often a result of propeller unbalance. The effect of an unbalanced propeller will usually be

    greater at high RPM.

  • 2

    Manually feathering a hydro mechanical propeller means to

    port governor oil pressure from the cylinder of the propeller.

  • 3

    The low pitch stop on a constant-speed propeller is usually set so that

    the engine will turn at its rated takeoff RPM at sea level when the throttle is opened to allowable takeoff manifold pressure.

  • 4

    Which of the following best describes the blade movement of a feathering propeller that is in the HIGH RPM position when the feathering action is begun?

    Low pitch through high pitch to feather position.

  • 5

    Which of the following occurs to cause front cone bottoming during propeller installation?

    The front cone contacts the ends of the shaft splines, preventing the front and rear cones from being tightened against the cone seats in the propeller hub.

  • 6

    How does the aerodynamic twisting force affect operating propeller blades? a. It tends to turn the blades to a high blade angle. b. It tends to bend the blades forward. c. It tends to turn the blades to a low blade angle.

    It tends to turn the blades to a high blade angle.

  • 7

    What normally prevents a Hartzell Compact propeller from going to feather when the engine is shut down on the ground?

    A latch mechanism composed of springs and lock pins.

  • 8

    Oil leakage around the rear cone of a hydromatic propeller usually indicates a defective

    spider-shaft oil seal.

  • 9

    The thrust produced by a rotating propeller is a result of

    an area of decreased pressure immediately in front of the propeller blades.

  • 10

    What will happen to the propeller blade angle and the engine RPM if the tension on the propeller governor control spring (speeder spring) is increased?

    Blade angle will decrease and RPM will increase.

  • 11

    Which of the following is identified as the cambered or curved side of a propeller blade, corresponding to the upper surface of a wing airfoil sect ion?

    Blade back.

  • 12

    When running-up an engine and testing a newly installed hydromatic propeller, it is necessary to exercise the propeller by moving the governor control through its entire travel several times to

    free the dome of any entrapped air.

  • 13

    Maximum taper contact between crankshaft and propeller hub is determined by using

    bearing blue color transfer.

  • 14

    The holding coil on a hydroniatic propeller feathering button switch holds a solenoid relay closed that applies power to the propeller

    feathering pump motor.

  • 15

    How is a propeller controlled in a large aircraft with a turboprop installation?

    By the engine power lever.

  • 16

    The application of more protective coating on one blade than the other when refinishing a wood propeller

    may be necessary to achieve final balancing.

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    問題一覧

  • 1

    Apparent engine roughness is often a result of propeller unbalance. The effect of an unbalanced propeller will usually be

    greater at high RPM.

  • 2

    Manually feathering a hydro mechanical propeller means to

    port governor oil pressure from the cylinder of the propeller.

  • 3

    The low pitch stop on a constant-speed propeller is usually set so that

    the engine will turn at its rated takeoff RPM at sea level when the throttle is opened to allowable takeoff manifold pressure.

  • 4

    Which of the following best describes the blade movement of a feathering propeller that is in the HIGH RPM position when the feathering action is begun?

    Low pitch through high pitch to feather position.

  • 5

    Which of the following occurs to cause front cone bottoming during propeller installation?

    The front cone contacts the ends of the shaft splines, preventing the front and rear cones from being tightened against the cone seats in the propeller hub.

  • 6

    How does the aerodynamic twisting force affect operating propeller blades? a. It tends to turn the blades to a high blade angle. b. It tends to bend the blades forward. c. It tends to turn the blades to a low blade angle.

    It tends to turn the blades to a high blade angle.

  • 7

    What normally prevents a Hartzell Compact propeller from going to feather when the engine is shut down on the ground?

    A latch mechanism composed of springs and lock pins.

  • 8

    Oil leakage around the rear cone of a hydromatic propeller usually indicates a defective

    spider-shaft oil seal.

  • 9

    The thrust produced by a rotating propeller is a result of

    an area of decreased pressure immediately in front of the propeller blades.

  • 10

    What will happen to the propeller blade angle and the engine RPM if the tension on the propeller governor control spring (speeder spring) is increased?

    Blade angle will decrease and RPM will increase.

  • 11

    Which of the following is identified as the cambered or curved side of a propeller blade, corresponding to the upper surface of a wing airfoil sect ion?

    Blade back.

  • 12

    When running-up an engine and testing a newly installed hydromatic propeller, it is necessary to exercise the propeller by moving the governor control through its entire travel several times to

    free the dome of any entrapped air.

  • 13

    Maximum taper contact between crankshaft and propeller hub is determined by using

    bearing blue color transfer.

  • 14

    The holding coil on a hydroniatic propeller feathering button switch holds a solenoid relay closed that applies power to the propeller

    feathering pump motor.

  • 15

    How is a propeller controlled in a large aircraft with a turboprop installation?

    By the engine power lever.

  • 16

    The application of more protective coating on one blade than the other when refinishing a wood propeller

    may be necessary to achieve final balancing.