RocketFun - Rocketry
How Model Rockets Work
Model rockets are all reusable. Most require assembly. They have different shapes — a typical rocket is shown.
NOSE CONE: Guides airflow around the rocket (streamlines).
BODY TUBE: Main structural part (airframe), usually a strong paper tube.
RECOVERY SYSTEM: Device for getting the rocket back safely and intact for repeat use.
WADDING: Protects recovery system from hot ejection charge gasses.
LAUNCH LUG: Guides rocket straight off launcher.
FINS: Keep rocket traveling straight.
ROCKET engine: Safe, non-reusable device. A new engine is needed for each rocket flight.
ENGINE MOUNT: Holds engine in place.
How Model Rockets FlyModel rockets are all reusable. Most require assembly. They have different shapes — a typical rocket is shown.
1. IGNITION: By safe, electric igniter.
2. LIFT-OFF: From launch pad, powered flight starts.
3. COASTING: Powered flight ends, delay charge allows altitude gain.
4. APOGEE: Peak of flight, rocket arcs over.
5. EJECTION: Charge pressurizes inside of rocket and pushes recovery system out.
6. RECOVERY: Gentle descent to fly again.
How Rockets Engines Work1. IGNITION: Electric launch controller heats igniter placed into engine nozzle. Engine starts to create thrust.
2. LIFT-OFF: Engine develops thrust. Rocket takes off by action/reaction principle and rapidly accelerates.
3. COASTING: Propellant has been consumed. The tracking delay smoke allows rocket to coast to peak altitude.
4. APOGEE: The rocket reaches peak altitude, loses momentum and arcs over, pointing down as tracking delay smoke ends.
5. EJECTION: The final charge activates, causing expanding gasses to deploy the recovery system.