B Flashcards

1
Q

What are major components of a typical gas turbine engine

A

Air inlet, compressor, combustion, turban, exhaust, and accessory section

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2
Q

What determines the amount of air passing through a turbine engine?

A

Compressor, speed, forward, speed of the aircraft and air density

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3
Q

what is the two principal Types compressor currently used in turban engines

A

Centrifugal and axial flow

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4
Q

How are determine engine, rotor blades attached to the rotor disk?

A

Bulb type root fur type root dovetail type root

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5
Q

name at least three types of combustion chamber systems

A

Can annular can annular and reverse flow annular

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6
Q

What is the purpose of an interconnect tube attached between can type combustion chambers?

A

Flame propagation during start up

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7
Q

What prevents burning of the combustion chamber?

A

cooling air along the inside of the liner

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8
Q

What are carbon seals used for in turban engines?

A

oil seals for the rotor shaft bearings

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9
Q

What are the desired effects of turban engine compressor field cleaning?

A

The air flows through the fan section of a turbo fan engine, and flows around the outside of the engine instead of through it

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10
Q

What methods are commonly used to accomplish turban, engine, compressor field cleaning?

A

Fluid washing, abrasive grip blast

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11
Q

Name, alyssa advantage of Turbo fan over turbo jet

A

Additional thrust without increasing fuel

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12
Q

What are the functions of an axial flow turbine nozzle?

A

to prepare the mass airflow for the driving the turbine rotor and deflect the gases to a specific angle

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13
Q

What are some ways of relieving thermal stress on turban disc?

A

Bleed air to the face of the disk, or by the grooves in the turban disc

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14
Q

What type of compressor blade damage may be found when inspecting compressor blades

A

Dents, galling, pitting, crack, scratches, burrs, burns, and gouges

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15
Q

What is used to mark both hot and cold section parts for repair?

A

Leo die commercial felt tip or chalk

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16
Q

What is the fact of relative humidity on turbo jet or turbo fan power?

A

It is negligible

17
Q

What may be the indication if a turbojet or turbo fan engine is out of trim

A

High exhaust temperatures at the target engine pressure ratio for takeoff power

18
Q

Would the possible cause be for a turbo jet or turbo fan engine, having high exhaust temperatures, low RPM and high fuel at all engine pressure ratio settings

A

possible turban damage or loss of turban efficiency