Aircraft 3 (Aircraft engines) Flashcards
1
Q
What are 5 advantages of jet engines?
A
- Low engine vibration
- Able to cruise above the weather
- Good performance
- Relatively light engine
- Cheaper fuel
2
Q
What are 4 types of jet engine?
A
- Turbo fan
- Ram jet
- Turbo shaft
- Turbo jet
3
Q
How does a jet engine work?
A
- Airflow in
- Air is compressed
- Combustion chamber ignites fuel
- Turbine pulls compressed air out
- Exhaust gasses out
4
Q
What are 5 advantages of a piston engine?
A
- Easy to access and maintain
- Lower temperature and pressure
- RPM increase and decrease quicker than a jet
- Cheaper to manufacture
- Shorter take off and landing
5
Q
How do piston engines and propellers work?
A
- Air and vaporised fuel is drawn in
- Fuel vapour and air is compressed and ignited
- Fuel combusts and piston driven downwards
- Exhaust gasses are expelled
6
Q
What are 6 disadvantages of a piston engine?
A
- Less economical than jets
- More weight of fuel carried
- More wear and tear from moving parts
- Relatively expensive fuel
- Lower ceiling
- Louder
7
Q
What are the 5 parts of a propella?
A
- Tip
- Leading edge
- Trailing edge
- Root
- Hub
8
Q
What are 3 disadvantages of jet engines?
A
- Initial set up cost is high
- Delay in engine start up (spool time.)
- Higher stresses (Temp and pressure)
9
Q
What are the 7 parts of a turbo prop engine?
A
- Propella
- Gear box
- Shaft
- Compressor
- Combustion chamber
- Turbine
- Exhaust
10
Q
What type of fuel is used in piston engines?
A
- AVGAS
11
Q
What are 3 disadvantages of turbo prop?
A
- Lower cruising levels than jets
- Expensive to manufacture
- Create more drag
12
Q
What are 2 turbo prop advantages?
A
- They’re quieter
- Performance envelope is most efficient for commuter aircraft
