Describe a dual-spool axial flow compressor.
Answer: The compressor is divided into two independent rotor spools, each driven by their own turbine and drive shaft. Order from forward to act is low pressure compressor, high pressure compressor, high pressure turbine, low pressure turbine.
Engines
- When using an air turbine starter, do you still need electricity?
- Describe two types of igniters.
- Name two types of starters.
- Which type of abnormal start is most dangerous?
- What are the indications of the four types of abnormal starts?
- What is the purpose of a starter?
- What position is the breather pressurizing valve in if you're sitting on the deck?
- What has an aneroid operated spring and bellows valve?
- What does the oil temperature regulating valve do?
- What does a magnetic chip detector do?
- What diverts oil back to the oil pump inlet (foot stomp) if safe operating pressures are exceeded?
- What is the purpose of an oil pump?
- What is inside the oil tank to feed oil regardless of attitude?
- What do oil tanks provide?
- What is a squeeze film?
- Define viscosity.
- What are the time limits for rated thrust?
- What supplies fuel to the afterburner?
- What is the basic purpose of the pressurizing and dump valve?
- What is the purpose of the fuel-oil heat exchanger?
- What does the fuel flow gauge/fuel flow meter do?
- What is the fuel pressure gauge and where is it located?
- What is a boost pump and where is it located?
- What must fuel system designers consider when designing a fuel system?
- What are the flash points for JP-5 and JP-8?