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1. What is meant by pressure cooling of an aircraft engine? - correct answer-
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Air cooling in which air is forced to flow through baffles and cylinder fins by a pressure differential a
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cross the engine. gh gh
2. What is the purpose of an augmentor tube in the cooling system of an aircraft reciprocating engine?
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- correct answer-
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The augmentor tube uses the velocity of the exhaust gases to produce a low pressure on one side of th
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e engine that helps pull cooling air through it.
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3. Where is the highest temperature located in a turbine engine? - correct answer-
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At the inlet to the high-pressure turbine.
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4. How are the turbine inlet guide vanes and the first-
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stage turbine blades in some turbine engines cooled? - correct answer-High-
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pressure compressor bleed air flows through the hollow guide vanes and hollow turbine blades.
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5. Which side of an air-cooled engine cylinder has the greatest amount of cooling fins? -
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correct answer- The side of the cylinder in which the exhaust valve is located.
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6. What should be done to repair a bent cooling fin in a cast aluminum cylinder head? - correct answer-
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It is normally best to leave a bent cast fin alone if it does not restrict the flow of air. Cast fins are brittl
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e and could break off.
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7. What is used in a helicopter to increase the amount of cooling air that flows over the engin
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e cylinders? - correct answer-A belt-driven fan.
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8. What should be the position of the cowl flaps on a reciprocating engine when it is run on the ground?
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- correct answer-They should be wide open when operating the engine on the ground.
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9. What is the function of the majority of the air that passes through a turbine engine? -
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correct answer- Most of the air is used for cooling.
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1. What is meant by pressure cooling of an aircraft engine? - correct answer-
gh gh gh gh gh gh gh gh gh gh gh gh
Air cooling in which air is forced to flow through baffles and cylinder fins by a pressure differential a
gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh
cross the engine. gh gh
2. What is the purpose of an augmentor tube in the cooling system of an aircraft reciprocating engine?
gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh
- correct answer-
gh gh gh
The augmentor tube uses the velocity of the exhaust gases to produce a low pressure on one side of th
gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh
e engine that helps pull cooling air through it.
gh gh gh gh gh gh gh gh
3. Where is the highest temperature located in a turbine engine? - correct answer-
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At the inlet to the high-pressure turbine.
gh gh gh gh gh gh
4. How are the turbine inlet guide vanes and the first-
gh gh gh gh gh gh gh gh gh
stage turbine blades in some turbine engines cooled? - correct answer-High-
gh gh gh gh gh gh gh gh gh gh
pressure compressor bleed air flows through the hollow guide vanes and hollow turbine blades.
gh gh gh gh gh gh gh gh gh gh gh gh gh
5. Which side of an air-cooled engine cylinder has the greatest amount of cooling fins? -
gh gh gh gh gh gh gh gh gh gh gh gh gh gh
correct answer- The side of the cylinder in which the exhaust valve is located.
gh gh gh gh gh gh gh gh gh gh gh gh gh gh
6. What should be done to repair a bent cooling fin in a cast aluminum cylinder head? - correct answer-
gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh
It is normally best to leave a bent cast fin alone if it does not restrict the flow of air. Cast fins are brittl
gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh
e and could break off.
g h gh gh gh
7. What is used in a helicopter to increase the amount of cooling air that flows over the engin
gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh gh
e cylinders? - correct answer-A belt-driven fan.
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8. What should be the position of the cowl flaps on a reciprocating engine when it is run on the ground?
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- correct answer-They should be wide open when operating the engine on the ground.
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9. What is the function of the majority of the air that passes through a turbine engine? -
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correct answer- Most of the air is used for cooling.
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