PPL Principals of Flight 05

Conversion of engine torque to thrust

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From the root to tip, propeller blades are __(1)__ twisted, meaning that the angle of incidence is __(2)__ at the tip compared to the root.

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How would one define 'propeller pitch' in other words?

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Why are the propeller blades primarily twisted?

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A small propeller pitch angle is called __(1)__ pitch, whereas a high propeller pitch is called __(2)__ pitch.

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Complete the sentence: Constant speed propellers are __(1)__ pitch, and are efficient for __(2)__ flight phase (airspeed-RPM ratio).

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When measured from the root of the propeller blade, the propeller pitch angle is measured at ..... of the radius.

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What can fixed pitch propellers be optimised for?

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Complete the sentence: Climb propellers have ...... pitch compared to cruise propellers.

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You notice that the propeller works at high power settings, but from time to time, you notice loss of thrust during a climb in hazy weather and temperatures at -2°C. Engine control instruments show normal/appropriate values. What the problem be?

10 / 22

Propeller vibration, thrust reduction, and longer than usual spool-up times. What are these symptoms of?

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In case the engine and propeller stops:

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In case the engine and propeller are windmilling, what can be said about the glide distance?

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The line of thrust acts ...... of a clockwise turning propeller (as seen from the cockpit) while flying at moderate angles of attack.

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What does the asymmetric blade effect of a propeller cause?

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The asymmetric blade effect of a clockwise rotating propeller creates ...... unless compensated for.

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The asymmetric blade effect of a counter-clockwise turning propeller creates ...... unless compensated for.

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A clockwise rotating propeller (as seen from the cockpit) at a low speed and high power setting requires __(1)__ input (rudder trimmed for cruise) to maintain zero sideslip due to __(2)__.

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A clockwise rotating propeller (as seen from the cockpit) at low power and high-speed setting requires __(1)__ input (rudder trimmed for cruise) to maintain zero sideslip due to __(2)__.

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A clockwise rotating propeller (as seen from the cockpit) during the cruise requires __(1)__ input to maintain zero sideslip due to __(2)__.

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A counter-clockwise rotating propeller (as seen from the cockpit) during the take-off roll requires __(1)__ input to maintain zero sideslip due to __(2)__.

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A counter-clockwise rotating propeller (as seen from the cockpit) creates a __(1)__ roll moment due to a __(2)__.

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If a counter-clockwise rotating propeller (as seen from the cockpit) during landing requires __(1)__ input (rudder trimmed for cruise) to maintain zero sideslip due to __(2)__.