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ROCKET TERMS
In the table below, match the rockets terms with the correct definition.
Step 1 Print off a copy of this "Rocket Terms" table.
Step 2 Find the answers by clicking on the Model Rocketry for Educators web site.
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TERMS |
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Altitude | Apogee | Burnout |
| Centre of Pressure | Coasting Phase | Drag | Ejection Phase | |
| Engine | Fins | Launch Lug | Igniter | |
| Friction Drag | Launch Rod | Thrust Phase | Centre of Gravity | |
| Parachute Recovery | Aerodynamic Stability | Nozzle | Shock Cord | |
| Nose Cone | Leading Edge | Recovery Phase | Recovery Wadding | |
| Frictional force or resistance between the surface of a moving object and air. | ||||
| Round, hollow tube (attached to the model rocket) which slips over the launch rod to guide the model during the first few feet of flight until sufficient airspeed is reached allowing the fins to operate. | ||||
| The elastic cord used to attach the recovery system to the body of the rocket. | ||||
| The short period of time of a rocket's flight during which the ejection charge of the rocket's motor is ignited and the recovery system deployed. | ||||
| The study of the interaction between air and moving objects. | ||||
| A miniature solid fuel rocket motor that contains propellant, a delay element, and an ejection charge. | ||||
| Supports and guides a model rocket in a vertical path until the rocket has reached a speed at which the fins stabilize it. | ||||
| The point at which a rocket engine ceases to produce thrust; generally, the point at which all propellant has been burned. | ||||
| The period of time immediately following propellant burnout and preceding the ignition of the ejection charge of the engine during which the rocket coasts on its momentum. | ||||
| The foremost surface of a model rocket, generally tapered in shape to reduce drag, usually made of balsa or plastic. | ||||
| An electrical device that initiates the combustion of the propellant in a model rocket engine. | ||||
| The measure of the vertical distance of a rocket from earth. | ||||
| The period of time following the deployment of the recovery system which allows the rocket to drift safely back to earth. | ||||
| The elastic cord used to attach the recovery system to the body of the rocket. | ||||
| Recovery system in which a parachute is attached to the rocket and ejected from the rocket by the engine's ejection charge. | ||||
| The resistance between a fluid and the surface of a moving object. The amount of friction depends upon the object's surface area its roughness. | ||||
| A device on the bottom end of an engine that channels the exhaust gas through the nozzle throat to greatly increase the exhaust gas speed which in turn develops thrust. | ||||
| Flame resistant tissues that are packed between the model rocket engine and the streamer or parachute to protect the recovery device from the hot gases of the ejection charge. | ||||
| The stabilizing and guiding unit of a model rocket; an aerodynamic surface projecting from the rocket body for the purpose of giving the rocket directional stability. | ||||
| The highest point reached during a model rocket's flight. | ||||
| The period of time during which the propellant is burning and the rocket motor is producing thrust. | ||||
| The centre of all external forces on the completed rocket including the body, nose cone and fins. (CP) | ||||
| The point in a rocket around which its weight is evenly balanced; the point at which a model rocket will balance on a knife edge. (CG) | ||||
| The front edge of the fin exposed to the greatest amount of air pressure build-up. | ||||
| Tendency of a rocket to maintain a straight course along the axis of its thrust. | ||||
