|
|
|
The Basics
|
|
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
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
Model Rockets 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. |
© Copyright Tower Hobbies 2004
|
|
|
|
|
