Helicopter models are those models designed such that all or
part of the model is recovered by deploying or activating some type of blade or fin
surface causing it to auto-gyrate (spin), reducing its speed during decent. This
category consists of Sport Helicopter (general fun models that may or may not be suitable
for competition) and Helicopter (kits that satisfy all of the needs of NAR sanctioned
competition for helicopter recover).
NOTE: Click on the rocket image for more detailed information about