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Recovering ejected rocket motor cases on the flying field
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I like quite a few classic and new model rockets that eject their motors. A simple solution (shown in the instructions of the Centuri Hummingbird boost-glider kit, see: http://astrocam.aea6.k12.ia.us/man4.jpg and http://astrocam.aea6.k12.ia.us/hummingbird.html) is to tape a length of cotton string to a streamer, tape the other end of the string inside the motor case using a square of masking tape (or glue it in place using a square piece of card stock), push a small amount of flameproof wadding down into the front end of the motor (or wrap the rolled-up streamer in one square of flameproof wadding), and then push the streamer down into the front end of the motor. A roll of 7/8", 1", or 1-1/16" wide fluorescent orange plastic flagging tape contains enough material for scores of motor case recovery streamers. Prior to a launch session, one could prepare all of the streamer-equipped motors at home beforehand. These ejected motors could be left on the flying field during the launch session and be picked up afterwards, and their streamers could then be removed and reused for the next flying session. (An ejected motor lying on the ground with its streamer could even be used as a spot-landing "target marker" for a subsequently-launched model in a streamer, parachute, or glide recovery spot-landing contest!)
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR Last edited by blackshire : 03-08-2009 at 11:54 PM. Reason: This ol' hoss done forgot somethin'. |
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