This article is from the Radio Control (R/C) Flying FAQ, by Shamim Mohamed email@example.com with numerous contributions by others.
Rocket power for R/C aircraft is strictly regulated by the AMA; however,
R/C rockets are a popular hobby. You should contact the National Association
of Rocketry (NAR), and read the rec.models.rockets newsgroup. The FAQ list
for that group may be obtained from sunsite.unc.edu by anonymous ftp; get
/pub/ftp/pub/archives/rec.models.rockets/RMRFAQ/rmrfaq.*. Part 3 contains
information on R/C rockets.