What is energy?
Energy is the capacity to do work.
What units are work and energy measured in?
Joules (J).
What happens when work is done on a mass?
It gains energy and can do work on other bodies.
What are the two main forms of energy?
Potential Energy (PE) and Kinetic Energy (KE).
What is Potential Energy?
Stored energy due to position or height.
Formula for Potential Energy?
PE = m × g × h.
What is Kinetic Energy?
Energy of motion.
Formula for Kinetic Energy?
KE = ½ × m × v².
State Newton’s First Law.
An object remains at rest or uniform motion unless acted upon by a force.
Newton’s First Law application in aviation?
Mass resists changes in speed or direction.
State Newton’s Second Law.
Force = Mass × Acceleration.
What determines thrust in a gas turbine engine?
Mass airflow and acceleration of that airflow.
State Newton’s Third Law.
For every action, there is an equal and opposite reaction.
How does a turbojet produce thrust?
High-velocity exhaust gases produce forward thrust.
What is the Brayton cycle?
The constant-pressure thermodynamic cycle of a gas turbine engine.
Name the four stages of the Brayton cycle.
Intake, Compression, Combustion, Exhaust.
What is an isentropic process?
A process with constant entropy.
Which GTE processes are isentropic?
Compression and expansion.
Which GTE processes are isobaric?
Combustion and exhaust heat release.
What is force?
A push or pull that tends to cause motion.
SI unit of force?
Newton (N).
What is work?
Work is done when a force moves an object through a distance.
Formula for work?
Work = Force × Distance.
What is power?
The rate of doing work.
