30 terms

# Water Rocket Vocabulary

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Center of Gravity
the point within something at which gravity can be considered to act
De Laval Nozzle
a tube that is pinched in the middle
Nozzle
a projecting spout from which a fluid is discharged
Nose Cone
front consisting of the conical head of a missile or rocket that protects the payload from heat during its passage through the atmosphere
Fin
a stabilizer that resembles the fins of a fish
Apogee
highest point; the point farthest from the earth; OP. perigee
Altimeter
an instrument that measures the height above ground
Pressure Test
An operation performed to verify the gas-tight integrity of gas piping following its installation or modification.
Drag
pull, as against a resistance
Thrust
the act of applying force to propel something
Gravity
the force of attraction between all masses in the universe
Inertia
the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force
Velocity
the speed of an object in a particular direction
Laminar Flow
nonturbulent streamline flow in parallel layers (laminae)
Aerodynamics
The study of forces and the resulting motion of objects through the air.
Unbalanced Force
two or more forces that are not equal and opposite of one another; can cause change in motion
Action / Reaction
Newton's 3rd Law
Mass
a body of matter without definite shape
Force
move with force, "He pushed the table into a corner"
Acceleration
a rate of change of velocity
Newtons 1st Law
(Law of Inertia) an object in motion tends to stay in motion & an object at rest stays at rest unless acted upon by an outside force.
Newtons 2nd Law
(Force) when force is applied to an object it is accelerated in the direction of the force. (mass and force are inversely proportional)
Newtons 3rd Law
For every action there is an equal and opposite reaction
Body Tube
Holds the compressed air
Recovery System
purpose is to return the rocket safely to earth; includes parachutes, streamer, tumble system, helicopter, or glider
Thrust Phase
when the rocket is blasting water out the nozzle
Momentum
the force or speed with which something moves