The Engine 1-5 Flashcards

1
Q

Engine type?

A

The PT6A-68 is a free-turbine turboprop engine

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2
Q

How many shaft horsepower?

A

flat rated to produce 1100 shaft horsepower

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3
Q

What type of flow design?

A

reverse-flow design

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4
Q

What are the two independent engine sections?

A

the gas generator section

the power turbine section

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5
Q

The gas generator section is in what part of the engine?

A

The aft half

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6
Q

The power turbine section is in what part of the engine?

A

The front half

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7
Q

What does the gas generator section consist of?

A
1. a four-stage axia-flow
compressor
2. a single-stage centrifugal flow compressor
3. a combustion chamber
4. a single-stage compressor turbine.
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8
Q

How many stages in the axial-flow compressor?

A

4

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9
Q

Where is the single-stage centrifugal flow compressor located?

A

the gas generator section

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10
Q

Where is the four-stage axia-flow compressor located?

A

the gas generator section

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11
Q

Where is the combustion chamber located?

A

the gas generator section

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12
Q

Where is the single-stage compressor turbine?

A

the gas generator section

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13
Q

What does the power section consist of?

A
  1. two-stage axial-flow power turbine
  2. exhaust case
  3. reduction gearbox.
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14
Q

Where is the two-stage axial-flow power turbine located?

A

the power turbine section

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15
Q

Where is the exhaust caselocated?

A

the power turbine section

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16
Q

Where is the reduction gearbox located?

A

the power turbine section

17
Q

Inlet air travels ________ through the intake duct and __________ before entering the engine inlet through an annular
plenum chamber formed by the compressor inlet case.

A

rearward; inertial separator

18
Q

How is the air compressed in the engine?

A

The compressor uses the four-stage axial compressor and one centrifugal impeller to compress the air.

19
Q

The air is mixed with fuel and ignited inside the?

A

combustion chamber.

20
Q

What drives the single-stage gas generator turbine?

A

expanding gases

21
Q

How much thrust is created by exhaust gas ejected rearward through the exhaust stacks?

A

180 LBS