Identify And Select Fuels Flashcards

1
Q

Why is it important that turbine fuel not be mixed with aviation gasoline used in an aircraft reciprocating engine?

A

The turbine engine fuel will cause the engine to detonate severely.

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2
Q

What grade of aviation gasoline is dyed blue?

A

Low-lead Grade-100

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3
Q

What damage is likely to occur if an aircraft reciprocating engine that is designed to use grade 100 fuel is operated with grade 80 fuel?

A

Detonation will occur, leading to bent connecting rods, burned pistons, and cracked cylinder heads.

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4
Q

What is meant by detonation in an aircraft reciprocating engine?

A

Detonation is an uncontrolled burning of the fuel in the cylinder of an engine. It is an explosion, rather that a smooth burning

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5
Q

What is the danger of using fuel that vaporizes too readily?

A

Vapor lock can occur in the fuel lines. This will shut off the flow of fuel to the engine

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6
Q

What type of fuel is Jet-A?

A

A fuel with a heavy kerosine base, a flash point of 110-150 a freezing point of -40 f, and a heat energy content of 18,600 Btu/pound.

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7
Q

What are two functions of tetraethyl lead that is added to aviation gasoline?

A

It increases the critical pressure and temperature of the fuel, and it acts as a lubricant for the valves.

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8
Q

What documentation is required for a certificated aircraft to legally operate on automotive gasoline?

A

There must be a supplemental Type Certificate for the aircraft to operate on automotive gasoline.

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