Transportations Flashcards
Subway
Train that travels underground
Elevated Train
Train that travels on rails build above the ground
Regular Train
Keystone
Stone at the top of an arch bridge
Truss Bridge
Bridge that uses a series of triangles to spread out the force
Drawbridge
Bridge that splits and can be lifted up to allow traffic to pass beneath the bridge
Magnetic Levitation Train
Maglev
Use of repelling magnets to move a train
Combustion
A quick burning or explosion of fuel
Intake Stroke
First stroke of an internal combustion engine that takes in fuel mixed with air
Compression Stroke
Second stroke that compresses the air/fuel mixture
Power Stroke
Third stroke that forces the piston down as the fuel explodes
Exhaust Stroke
Fourth stroke that pushes out any unburned fuel and gases that resulted from the combustion
Lubricant
Material that reduces friction
Alternative Fuel Vehicles
A vehicle that does not use a petroleum product as fuel
Thrust
Power needed to move an aircraft forward
Turbine
Series of blades that turn when hot gases push against them
Bernoulli’s Principle
As a fluid increases in velovity it decreases in pressure
Airfoil
Shape whose top surface is rounded and thus longer than the bottem surface
Lift
Upward force generated by air flowing faster over the top of a wing than under it
Weight
Downward force generated by gravity
Drag
Backward force generated by friction with air molecules
Pitch
Movement of airplane up and down as it moves forwards
Roll
Movement of airplane wings tipping side to side
Yaw
An airplane turning right or left
Newton’s 3rd Law of Motion
For every action, there is an equal and opposite reaction
Propellant
Combination of rocket fuel and oxidizer in a rocket engine
Oxidizer
Material that supplies oxygen for combustion
Cryogenic Fuels
Fuel that is liquid only at extremely low temperatures under great pressure
Hypergolic Fuels
Fuel composed of two chemicals that ignite when they come in contact with each other
V-2 Rocket
Rocket designed by Germany for use in WWII
Satellite
Anything in a regular orbit around the earth
Space Probe
Scientific instrument sent to explore objects in space
Drone
An aircraft that flies without a pilot
Unpiloted Aerial Vehicle
UAV
Official term for a drone
Unmanned Aircraft System
UAS
Official term for a drone and its control system
Quadcopter
A drone that is similar to a helicopter but uses four rotor blades