RocketFun.com

RocketFun.com

The Basics


How Model Rockets Work

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 Fly

How Model Rockets Fly

Model 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 Work

How Rockets Engines Work

1. 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.