Test 1 Flashcards
a continuous event that occur simultaneously within the engine.
Brayton Cycle
The acceleration of a body is directly proportional to the force causing it and inversely proportional to the mass of the body
Newton’s 2nd law
The N1 section in a twin spool turbo-fan engine includes?
Front stage fan
The diffuser found inside a gas turbine engine is located ______, and its purpose is to ___________.
at the exit of the compressor, increase the pressure of the gas prior to combustion.
EPR is best described as:
a measurement of engine thrust output
The HP turbine in a twin spool jet engine:
drives the N2 compressor
EPR system is operated by?
Comparing N1 RPM and N2 RPM to provide thrust indication
What controls the Pratt & Whitney JT8D anti-stall system?
Pressure ratio controller
What type of anti-stall device is used on Pratt & Whitney JT8D engine?
3 bleed valves
On a compressor anti-stall system, what is P3 pressure to P2.5 pressure?
P3 is always higher than P2.5
What systems uses hydro-mechanical systems?
VIGV and VSGV
What ATA chapter is Accessory Gearboxes?
ATA chapter 83
What gear are used on a parallel axis of rotation?
Straight tooth or straight cut
What do you call the comparison of the pressures at the inlet front of the engine to the pressures at the exhaust outlet of the engine?
Engine Pressure Ratio (E.P.R.)
What is the likely cause if the EPR indication doesn’t pass 1.00?
Problem on the indicating system
