This article is from the Model Rockets FAQ, by Wolfram von Kiparski with numerous contributions by others.
The following information does not constitute an endorsement of
amateur rocketry in any way, shape, or form by the editor(s)
of this FAQ, or the general readership of rec.models.rockets.
Due to the number of requests for information on this form of
rocketry, the following information is provided.
Pursue at your own risk.