Cool project. One question: the drawings don't seem to show enough room between the top of the engine and the parachute to include any wadding. Do you have a plan for not melting or burning the parachute, or am I reading the drawings wrong?
It gives me the (crazy?) idea of placing another piece of body tube between the dowels, but not attached, with a booster motor. Pick the length of the booster such that the launch stack looks like a normal rocket, then after staging you've got the Rock-a-Chute. With the lower CG I guess one might have to take artistic license to expand the fins a bit.
For 'chute protection, yes, I see. Please make sure that the paper you make the end cap (52) from is flame resistant; Estes paper wadding is good. The patent description does not seem to specify what the parachute (46) is made of; I'm concerned that enough heat may penetrate the end cap (52) to melt it, but we shall see.
Regarding the booster, I envision it such that when it's removed you are left with exactly the rocket you're now preparing to build, unless the larger fins end up being needed; maybe removable nose weight could be added when a booster is used, in a way that is fully hidden. But that's a subject for another time.
The crepe paper I use is flame resistant. It states such on the package... and I tested it to be sure.
Absolutely Beautiful LakeroadsterI decided to take a stab at making a 2021 version of Orville Carlisle's Rock-A-Chute. It was discussed previously HERE
Very similar to the original 1958 design except I stretched the body tube 1" and am using a pine nose cone. It uses a 18 mm motor and a 10" diameter parachute.
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Absolutely Beautiful Lakeroadster
Any launch pics or videos?
This would be a great HPR upscale.
What program (format) is the model/drawing in? Care to share?
<----Design Engineer
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