challis-heli-plane.com — Truly a thing of beauty, this technological breakthrough is a culmination of 12 years of design work. Prototype #83 is the title of the video - which is no exaggeration. Doug Challis has improved the helicopter (or more correctly, heliplane) by making revolutionary design changes that address current helicopter limitations. ~ very cool ~
Oct 23, 2007 View in Crawl 4
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It's quiet in here... can you hear the echo?