M15.2 Flashcards
Inlet duct type
Divergent
Important facts about the combustion process
- Min decrease in pressure
- Max increase in energy
- No damage
Purpose of the turbine
To supply the torque to drive the compressor
What drives the accessory gearbox
Turbine
How do the engine stations run
Front to back
Regarding airflow stations what does S or T identify
Static or Total pressure or temperature is measured at that point
External efficiency
Propulsive energy compared to energy loss
What is the product of internal and external efficiency called
Total efficiency
How can compressor pressure ratio be increased
Additional compressor stages
High pressure ratio disadvantages
- Large compressor is required
- High discharge temp
What is used to show the amount of fuel an engines needs to make 1kn of thrust for 1 hour
TSFC ( Thrust Specific Fuel Consumption)
When will an engine produce the highest amount of thrust
When the aircraft is at rest
How is the acceleration of the air measured
Difference between the outlet and inlet air velocity
When is an engine said to be “choked”
When exit velocity reaches speed of sound
What are engine ratings
Exhaust gas limitations made by the manufacturer
