Term
what is the function of a propeller |
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Definition
creates thrust to pull or push an airplane through the air |
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Term
what is the difference between a fixed pitch propeller and a controllable pitch propeller |
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Definition
fixed pitch- has a built in blade angle that can not be changed by pilot controllable- can be changed by pilot |
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Term
how are some wooden blades protected from wear and damage |
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Definition
metal tipping fastened to the leading edge and tip |
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Term
what happens to the blade angle of a constant speed propeller during a constant power dive |
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Definition
the blade angle increases to prevent an overspeed |
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Term
what are the functions of a constant speed propeller governor |
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Definition
boosts engine oil pressure before it enters the propeller hub, senses rotational speed of the propeller, and adjusts the oil flow to the propeller hub to change pitch and speed of propeller |
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Term
what is the purpose of propeller counterweights |
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Definition
causes the blade angle to increase with centrifugal force |
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Term
what is meant when a propeller governor is in an "on-speed" condition |
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Definition
the governor is not accelerating or decelerating and the speeder spring and flyweight forces are in balance |
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Term
how is a constant speed feathering propeller feathered |
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Definition
controlled by the pilot by moving the propeller control into the feathering detent |
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Term
what is an un-feathering accumulator |
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Definition
it is an oil accumulator used to provide oil pressure to un-feather a propeller |
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Term
what is "alpha range" and "beta range" and where are they found |
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Definition
they pertain to the operating modes of turboprop reversible-pitch props. alpha- operates in the standard, constant speed mode beta- operates in zero or min. thrust range and reverse thrust mode |
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Term
what systems are commonly used for propeller ice control |
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Definition
alcohol and electrical heat applied to the propeller blade root |
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Term
what propeller repairs can be performed by a certified mechanic w/powerplant rating |
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Definition
only minor repairs and alterations |
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Term
how are wooden prop generally cleaned |
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Definition
brush or cloth and warm water with mild soap |
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Term
where would you find the correct method and technique for cleaning an aluminum prop. and hub |
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Definition
propeller manufacturer's maintenance instructions |
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Term
what type of nondestructive testing should be accomplished to a propeller after blending |
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Definition
procedures recommended by the manufacturer |
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Term
what are the 2 criteria used by many manufacturers to determine the amount of bend damage that can be repaired by cold bending of aluminum propellers |
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Definition
the extent of the blade and its blade station location |
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Term
how can repair file marks be removed from an aluminum propeller |
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Definition
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Term
when performing a static balance on a 2 bladed propeller, what positions must the propeller be place in when measurements are taken |
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Definition
vertical and horizontal positions |
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Term
what is a propeller protractor used for |
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Definition
it is used to measure propeller blade angle |
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Term
what blade conditions can cause engine vibration |
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Definition
can be caused by a propeller being out of track and/or balance, as well as incorrect blade angle setting |
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Term
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Definition
procedure that compares the position of the propeller blade tips relative to each other |
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Term
what controls both manifold pressure and r.p.m. on an engine equipped with a fixed pitch propeller |
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Definition
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