View Full Version : Impressive amateur rocketry

2002-Jul-06, 09:09 PM
Rocket booster height was 13 ft. tall and 10" in diameter and a weight of 475 pounds including solid fuel. The Vehicle was designed by George Garboden and a handfull of other members. Thrust was 14,000 pounds with a chamber pressure of 1000 PSI, with a 5 sec. burn. Dart payload was 5ft long and 3.25" in diameter made of stainless steel with a total weight of 65 pounds. Rocket was tracked with multi channel Doppler radar with the following results: Maximum speed was 4660 Feet per second or around Mach 4.5 with booster landing 1.81 miles down range. Peak altitude of booster was 90,000 ft. Calculated force of acceleration was 35G's peak. Launch angle was 85 degrees elevation due north. Dart payload reached a height of about 280,000 ft. and was recovered 7.86 miles down range, still transmitting video. Total time from lift-off to ground contact was approx. 7 Min. Height was optically verified using distinguishing ground features compared to a detailed map database containing surface contours as well as highways and train tracks.

First movie has a lot of static but is still pretty amazing. you can see the curve of the earth and the sky goes black with the blue atmosphere below.




Anyone know of any other examples of amateur space flight. This is pretty neat stuff.


2002-Jul-06, 09:35 PM
Pretty cool. Thanks for that! /phpBB/images/smiles/icon_smile.gif /phpBB/images/smiles/icon_smile.gif /phpBB/images/smiles/icon_smile.gif

2002-Jul-06, 10:54 PM
Up until Nov 2000, there was a prize being offered for the first group that could put a 2 kg payload to an altitude of 200 km; $250,000.

The flight that thkaufm mentions seemed like a natural precursor to a two-stage shot that might have gone the distance, but I don't think the group made the attempt. It may have been too late by the time they flew this one. It's a shame that contest has lapsed.