The Engine 1-5 Flashcards
Engine type?
The PT6A-68 is a free-turbine turboprop engine
How many shaft horsepower?
flat rated to produce 1100 shaft horsepower
What type of flow design?
reverse-flow design
What are the two independent engine sections?
the gas generator section
the power turbine section
The gas generator section is in what part of the engine?
The aft half
The power turbine section is in what part of the engine?
The front half
What does the gas generator section consist of?
1. a four-stage axia-flow compressor 2. a single-stage centrifugal flow compressor 3. a combustion chamber 4. a single-stage compressor turbine.
How many stages in the axial-flow compressor?
4
Where is the single-stage centrifugal flow compressor located?
the gas generator section
Where is the four-stage axia-flow compressor located?
the gas generator section
Where is the combustion chamber located?
the gas generator section
Where is the single-stage compressor turbine?
the gas generator section
What does the power section consist of?
- two-stage axial-flow power turbine
- exhaust case
- reduction gearbox.
Where is the two-stage axial-flow power turbine located?
the power turbine section
Where is the exhaust caselocated?
the power turbine section
Where is the reduction gearbox located?
the power turbine section
Inlet air travels ________ through the intake duct and __________ before entering the engine inlet through an annular
plenum chamber formed by the compressor inlet case.
rearward; inertial separator
How is the air compressed in the engine?
The compressor uses the four-stage axial compressor and one centrifugal impeller to compress the air.
The air is mixed with fuel and ignited inside the?
combustion chamber.
What drives the single-stage gas generator turbine?
expanding gases
How much thrust is created by exhaust gas ejected rearward through the exhaust stacks?
180 LBS
