Engine Flashcards
What type of engines does the emb-145 have?
Rolls-Royce AE3007A1 High bypass ratio (5-1) Two spool Axial flow Turbo fan engine
What are the different sections of the engine.
Fan Compressor Combustion Turbine Exhaust
What are the components of the engine?
24 blade fan 14 stage compressor 5 variable pitc 2 stage high pressure turbine, compressor 3 stage low pressure turbine, fan Accessory gear box Forced air mixer
How many FADEC’s are there and where are they located?
2 per engine A and B
Located in the forward electronics compartment.
What is in the compressor section of the engine?
A 14 stage axial flow compressor
What parts of the compressor are moveable?
The inlet guide vane and the first five stages of the compressor. (Compressor Variable Geometry)
What is the fan connected to and how?
The 3 stage low pressure turbine
By an inside shaft.
How is the compressor driven?
By the 2 stage high pressure spool
How is the accessory gear box driven?
By a tower shaft driven by the 2 stage high pressure spool.
What does ground idle ensure for the airplane?
Avoid flame out, overheat, and inability to accelerate
Adequate bleed flow and temperature for ECS
Adequate generator speed
What does flight idle ensure?
Ground idle +
Anti icing
Go around in 8 seconds
Where is bleed air taken from? Why?
9th low pressure
10th internal cooling
14th high pressure
When does the 14th stage open?
Low thrust
Engine starts
Anti ice
What is in the accessory gear box?
Fuel pump metering unit 2 generators Hydraulic pump Oil pump Air turbine starter Permanent magnetic starter
How many fuel nozzles and igniter plugs are there?
16 fuel
2 igniters