M15.1 Flashcards
Weight is measured in?
Newton’s.
What’s the equation to determine force?
Mass x acceleration
Equation to determine weight?
Mass x acceleration due to gravity.
Equation for work?
Force x distance.
SI unit for work?
Joules, 1 joule=1Nm
Pg 3
Equation for power?
Work/time
SI unit for power
Watts, 1W = 1 Nm/s
Mechanical energy can be divided into 2 types of energy?
Potential and kinetic.
Potential energy is?
The energy a body has by virtue of its position.
Potential energy (PE) = ?
PE = mgh
Pg 4
Kinetic energy is?
The energy a body has by virtue of its motion.
Kinetic energy (KE) can be expressed by what equation?
1/2 m (V squared)
Pg 4
On impact kinetic energy turns into what 2 types of energy?
Sound and heat energy
Newton’s first law is
The law of inertia, a body at rest remains at rest unless acted upon by an unbalanced external force.
Newton’s second law is
The interplay between force and motion, and states that the acceleration produced in a mass by a force acting on it directly proportional to the force and inversely proportional to the mass
Newton’s 3rd law is
The law of action and reaction and states that every action has an equal and opposite reaction.
The gas turbine engine is essentially?
A heat engine using air as a working fluid to provide thrust.
To accelerate the air passing through the engine, the engine must? (3)
Pressure energy increase
Addition of heat energy
Conversion from potential to kinetic energy in the form of a high velocity jet.
4 areas of an engine?
Air inlet
Compressor
Combustion
Exhaust
In a piston engine the cycles are ?
Intermittent.
In a gas turbine the cycles are?
Continuous
The process of increasing the airs volume without changing its pressure is called?
Heating at constant pressure or isobaric heating.
The aircrafts engines ,aim jobs are to? (4)
Create the necessary thrust for movement
Hydraulic power
Electrical power
Bleed air
2 types of aircraft engine
Gas turbine and piston engine
Advantages (1) and disadvantages of a piston engine (2)
Adv - good fuel efficiency
Dis Adv - high weight to power ratio and performance loss at altitude.
4 types of gas turbine engine are
Turbo-pop
Turbo-shaft
Turbo-jet
Turbo-fan
An engine which uses jet propulsion is called a ?
Reaction engine.
