15.1 - Fundamentals - 5q Flashcards
Where does heated air for anti ice come from?
Compressor
Divergent and Convergent ducts?
Divergent - velocity decrease, pressure and temperature increase
Convergent - velocity increase, pressure and temperature decrease
Where is acoustic lining located?
Inlet, bypass ducts, exhaust
Supersonic inlet shape?
Convergent/Divergent
Fan turns at the same speed as?
LP turbine
where would you find a bell mouth inlet?
Test cell and helicopters
Free turbine?
No mechanical connection to compressor
Turbojet engine combustion is?
Constant pressure
Stator vanes do what?
convert velocity to pressure energy
In a dual axial flow eninge the HP turbine drives what?
the N2 compressor
the turbine and compressor on a turbo shaft engine are?
mechanically connected
diffuser vanes in a centrifugal compressor do what?
convert kinetic into pressure energy
Powerplant consists of?
engine, accessories and cowlings
Engine hot section consists of?
Combustor, turbine, exhaust
Where is the highest pressure in a jet engine?
At the compressor outlet
Engine noise measured in?
Perceived Noise Decibels
where is the diffuser located
between the compressor and combustor
Free turbine speed designated as?
NF
Purpose of diffuser?
increase static pressure of the air
turboprop engine power measured in?
Effective shaft horsepower (ESHP)
