Flashcards on Aircraft Propeller Systems and Control
Aircraft Propeller Systems and Control: A Student's Guide
Tap to flip · Swipe to navigate
Aircraft Propellers
23 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 does the term 'slave engine' mean in propeller synchronization?
Answer: The slave engine is the engine whose RPMs follow those set on the master engine.
Card 3
Question: Why are the blades of a counterweight propeller placed in high pitch before shutting down the engine?
Answer: Because the propeller has a movable cylinder that slides over the propeller piston; putting blades in high pitch prevents unintended movement when sto
Card 4
Question: What internal adjustment in a constant-speed propeller governor changes the propeller operating speed?
Answer: The compression of the speeder spring is adjusted to change the operating speed.
Card 5
Question: What is the function of the accumulator used with some McCauley feathering propellers?
Answer: The accumulator stores oil under pressure while the engine operates; this oil helps move the blades toward low pitch when unfeathering.
Card 6
Question: What is the beta range of operation for a turboprop propeller?
Answer: The beta range is the ground mode of operation, including starting, taxiing, and ground reverse.
Card 7
Question: What is the alpha range of operation for a turboprop propeller?
Answer: The alpha range is the in-flight mode of operation from takeoff to landing.
Card 8
Question: What instrument is used to measure propeller blade angle?
Answer: A universal propeller protractor.
Card 9
Question: How is shortening a propeller blade classified in maintenance terms?
Answer: Shortening a propeller blade is classified 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 the blades from moving into feather when the engine is shut down on the ground.