1 - Energy, Laws of Motion and Brayton Cycle Flashcards
What is energy measured in
Joules (J)
What are the two types of energy
- Potential
- Kinetic
Explain the difference between kinetic and potential
Potential - Stored energy
Kinetic Energy - Energy being used
Name Newtons 3 Laws
- Law of Inertia (1st)
- Law of Motion (2nd)
- Law of Action/Reaction (3rd)
What are the 4 stages of the Brayton cycle
- Intake (suck)
- Compression (squeeze)
- Expansion (bang)
- Exhaust (blow)
Define force
A measurable action (N/lbs)
When is work done
When an object has moved a measurable distance
Define power
The work done over a period of time
Define motion
Constantly changing position/motion
What are the two types of aircraft engines
- Piston
- Gas turbine
What are the 4 types of gas turbine
- Turbojet engines
- Turbofan engines
- Turboprop engines
- Turboshaft engines
Turbojet advantages and disadvantages
Simple design
Very high speeds
Compact
High fuel consumption
Loud
Poor slow speed performance
Limited range and endurance
Turbofan advantages and disadvantages
Fuel efficient
Quieter than turbojets
Streamlined appearance
Heavier than turbojets
Larger diameter than turbojets
Inefficient at very high altitudes
Turboprop advantages and disadvantages
Very fuel efficient
Most efficient at 250 - 400 knots
Most efficient at 18,000 - 30,000 ft
Turboshaft advantages and disadvantages
VEr high power-to-weight ratio
Typically, smaller than piston engines
Loud
Gear systems can be complex and break down
What makes up a typical gas turbine
Air inlet (fan blades)
Compressor section (Low and High)
Combustion section
Turbine section (Low and High)
Exhaust section
Accessory section (main gearbox)
