Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!ncar!ames!amdcad!sun!pitstop!sundc!seismo!uunet!portal!cup.portal.com!mmm From: mmm@cup.portal.com (Mark Robert Thorson) Newsgroups: sci.space Subject: Re: Model Rocketry Message-ID: <14081@cup.portal.com> Date: 29 Jan 89 21:05:34 GMT References: <9483@ihlpb.ATT.COM> Organization: The Portal System (TM) Lines: 12 Since you can't legally build your own amateur engines, I'm wondering about the other parts of the bird. Is it okay to build your own housing for a engine? Can you do experiments with manuvering and guidance? Let's say I build a rocket with an infrared quadrant detector linked to movable surfaces. If I use Estes engines and go somewhere legal for conventional rockets, would I be breaking any laws if I launched a rocket, and then shot it down with a second rocket (assume no explosive in warhead, just kinetic energy)? If I added rockets to a conventional R/C model airplane, for example to assist takeoff, would that be considered a model rocket or what?