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Eng. Cooling Sys.

FAA AMP

QuestionAnswer
the component(s) in a turbine engine that operate(s) at the highest temperature is/are the first stage turbine nozzle inlet guide vanes
which statement is true regarding the air passing through the combustion section of a jet engine? most is used to engine cooling
cracks in cooling fins that do not extend into the cylinder head may be repaired by removing the affected area and contour filling within limits
what is the purpose of an augmenter used in some reciprocating engine exhaust systems? to aid in cooling the engine
(1) some aircraft exhaust systems include an augmenter system to draw additional air over the engine for cooling. (2) augmenter systems are used to create a low pressure area at the lower rear of the aircraft engine cowling regarding the above Both are true
what is the function of a blast tube as found on aircraft engines? a device to cool an engine accessory
a bent cooling fin on an aluminum cylinder head should be left alone if no crack has formed
a broken cooling fin on a cylinder head may be filed to smooth contours if damage and/or repair limits are not exceeded
the position of the cowl flaps during normal cruise flight conditions is closed
during ground operations of an engine, the cowl flaps should be in what position? fully opened
prolonged idling of an engine will usually result in foreign material buildup on spark plugs
the most common method and generally the best conduction of heat from the inside of a cylinder barrel to the cooling air is accomplished by machining fins directly on the outside of the barrel
an engine becomes overheated due to excessive taxiing or improper ground runup. prio to shutdown, operation must continue until cylinders have cooler, by running engine at idle RPM
increased engine heat will cause volumetric efficiency to decrease
generally, a small crack just started in a cylinder baffle may be stop drilled
the primary purpose of baffles and deflectors installed around cylinders of air-cooled aircraft engines is to force cooling air into close contact with all parts of the cylinders
where are cooling fins usually located on air-cooled engines? cylinder head, cylinder barrel, and inside the piston
reciprocating engines used in helicopters are cooled by a fan mounted on the engine
which of the following results in a decrease in volumetric efficiency? part-throttle operation
during an operational check of an electrically powered aircraft engine cowl flap system, the motor fails to operate. which of the following is the first to be checked? flap actuator motor circuit breaker
which of the following defects would likely cause a hot spot on a reciprocating engine cylinder? too much cooling fin area broken off
high cylinder head temperature are likely to result from a very lean mixture at high power settings.
aircraft reciprocating engine cylinder baffles and reflectors should be repaired as required to prevent loss of cooling
how do cowl flaps aid in cooling horizontally opposed aircraft engines? controls the amount of air flowing around the cylinders
the purpose of an intercooler when ised with a turbocharger is to cool air entering the carburator from the turbocharger
cylinder head temperature are measured by means of an indicator and a thermocouple sensing device
What part of an air-cooled assembly has the greatest fin area per square inch? exhaust valve port
the undersides of pistons are frequently finned. the principal reason is to provide for greater heat transfer to engine oil
which of the following should a mechanic consult to determine the maximum amount of cylinder colling fin that could be removed when cracks are found? engine manufacturer's service pr pverhaul manual
the greatest portion of heat generated by combustion in a typical aircraft reciprocating engine is carried out with the exhaust
what is the position of the cowl flaps during engine starting to warmup operations under normal conditions? full open at all times
which of the following assists in removing heat from the metal walls and fins of an air-cooled cylinder assembly? a baffle and cowl arrangment
Created by: cordon.gabriel
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