15.1 Fundimental Flashcards
What are the two types of energy
Portential & Kimetic
What is potential energy
Energy at rest or stored
What is energy
Gives us the capacity to perform work
What is work and energy measured In
Joules
What is kinetic energy
Energy in motion
Formula for Potential energy
PE=mgh
Formula for Kimetic Energy
KE=1/2 x mass x velocity
What is Newton’s first law
Law of inertia
What is Newton’s second law
F=MA
What is Newton’s third law
Law of action and reaction
What is another two names for the Brayton cycle
Constant pressure cycle or continuous combustion cycle
What are the four stages of engine in relation to Brayton Cycle
Intake, compression,expansion and exhaust
What happens to air in the intake (suck) cycle
Enters at ambient pressure and constant volume.
Leaves at increased pressure and decreases volume
What happens to air as it enters the compressor (squeeze) section
Increased pressure of air, decreased volume
What happens to air in the expansion (bang) cycle
Takes place in the combustion chamber . Pressure remains constant, volume increases
What type of duct is the exhaust section
Convergent
What are the four ideal changes of state
Isobaric
Isochoric
Isothermal
Isentropic
What are the two important changes of state for Gas Turbine Engine
Isobaric
Isentropic
How are the changes of state often represented by
Pressure-volume diagrams
What is force
Is the intensity of thrust or an input
What is force measured in
Pounds or newtons (in metric)
What is one pound of force equal to
4.448 Newtons
What is work and what is it measured in
Work is force moved through a distance and measured in joules
What is Power
Power is the rate of doing work
Power= work /Time
Formula for work
Work = force x distance
Two types of engines
Pistons and Gas turbine
4 types of gas turbine engines
Turbojet
Turbofan
Turboprop
Turboshaft
Turboprop engines are designed to produce what type of power
Shaft horsepower only
