Engine Flashcards
Five engine sections
inlet, compressor, combustor, turbine, exhaust
Inlet section comprised of?
inlet cowling, swirl frame, front from, main frame, accessory section, and scroll case.
Engine airflow
Inlet cowling (fifth stage bleed air can heat), swirl vanes, IPS, scroll vanes, deswirl vanes, compressor, combustor, exhaust
What kind of compressor
five-strage axial and a single-stage centrifugal rotor/stator assembly
Type of combustor
annular, 2 igniters, 12 fuel injectors
What does Ng drive
compressor and AGB
Describe Ng turbine
two-stage, air-cooled, high performace axial design
What does Np drive
power turbine drive shaft
Describe Np turbine
shaft is coaxial and connects to the high speed shaft which turns the input modile.
Where is TGT sensed
between Ng and Np
What percent of total airflow is used for combustion
30%
What is T2
compressor inlet air
What is P3
compressor discharge pressure
What does the rest of the air do
1) Compressor inlet temperature (T2) air (2) Compressor discharge pressure (P3) air (3) combustor and turbine cooling (4) engine oil seal pressurization
What is the AGB driven by
Ng (specifically a rotor via a radial drive shaft from the Ng turbine drive shaft)
