15.1 Flashcards
What’s the earth’s gravitational speed
9.8m/s squared
How’s weight calculated
Mass X acceleration due to gravity
What’s the equation for work and what’s the SI unit for it?
Force X distance
Joules
What’s the equation for power and what’s the SI unit
Work/Time
Watts and kilowatts
What’s Newton’s first law
A body will remain at rest and a body motion continues to move at a constant velocity unless acted upon by an unbalanced force
What’s Newton’s second law
Acceleration produced in a mass by a force acting on its directly proportional to the force and inversely proportional to the mass
What’s Newton’s third law
Every action has an equal and opposite
What’s the Brayton cycle ( what order does air flow through the compressors in )
Inlet
Compression
Combustion
Exhaust
What happens to pressure and volume of air during isobaric heating
Pressure doesn’t rise
Volume does
What’s the name for the working cycle of a gas turbine engine
Brayton cycle
What advantages and disadvantages do piston type engines have in comparison to gas turbine engines
Advantage= more fuel efficient
Disadvantages= don’t perform well at high altitudes
What’s another name for engines that use jet propulsion
Reaction engines
Whats a disadvantage of turbojet engines
Very Loud and require more fuel
What’s the purpose of a reduction gear in turboprop engines
To reduce high gas turbine engine rotation speeds to speeds that can be ,amazed by the propellor
What do turboprop engines convert gas into
Torque