Flashcards on Aircraft Propeller Systems: Operation and Maintenance

Aircraft Propeller Systems: Operation & Maintenance Guide

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How can you prevent the front cone from bottoming when installing a propeller on a splined shaft?

Install a spacer behind the rear cone to move the propeller forward on the shaft.

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Aircraft Propellers

10 cards

Card 1

Question: How can you prevent the front cone from bottoming when installing a propeller on a splined shaft?

Answer: Install a spacer behind the rear cone to move the propeller forward on the shaft.

Card 2

Question: What is a slave engine in propeller synchronization on a multi-engine airplane?

Answer: The engine whose RPMs follow those set on the master engine.

Card 3

Question: Why are the blades of a counterweight propeller put into high pitch before stopping the engine?

Answer: In high pitch the movable cylinder covers the propeller piston, protecting it from dirt and moisture when the airplane won't be operated for several d

Card 4

Question: What internal governor adjustment changes the operating speed of a constant-speed propeller?

Answer: The compression of the speeder spring.

Card 5

Question: What is the function of the accumulator used with some McCauley feathering propellers?

Answer: It stores oil under pressure while the engine operates; that oil helps move the blades toward low pitch when unfeathering.

Card 6

Question: What does the beta range of operation of a turboprop propeller refer to?

Answer: The ground operation mode, including starting, taxiing, and ground reverse.

Card 7

Question: What does the alpha range of operation of a turboprop propeller refer to?

Answer: The in-flight mode of operation from takeoff to landing.

Card 8

Question: Which instrument is used to measure the blade angle of a propeller?

Answer: A universal propeller protractor.

Card 9

Question: How is shortening a propeller blade classified in maintenance terms?

Answer: As a major repair.

Card 10

Question: What prevents a McCauley feathering propeller from feathering when the engine is shut down on the ground?

Answer: A spring-loaded latch mechanism prevents blades moving into feather on the ground; in flight centrifugal forces hold the blades unlatched so they can