Thrust woofer of a P10000 rocket... with the ROCKETS magazine build team in the foreground. A beautiful 8" minimum-diameter rocket, 16.5 ft. tall. The motor is made from scratch. The largest commercial motor, from a Canadian aerospace company, is used as a cruise missile booster, and it is half as big as this.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jurvetson/">Steve Jurvetson</a>
CC BY 2.0
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