August 2007
Intermediate to advanced
190 pages
7h 38m
English

PROPELLER POWER Can a wind-powered vehicle travel faster than the wind propelling it? MAKE built one to find out.
Photography by Charles Platt
Wind-powered vehicle claims look like hot air.
Can a wind-driven vehicle outrun a tailwind? A Florida tinkerer named Jack Goodman claims it can, and he put a video on YouTube to prove it. Some sailing enthusiasts became convinced that he was on to something, while others were equally sure it was a hoax — and I decided to put it to the test.
First, we need a quick primer on seafaring aerodynamics. The oldest boats had rectangular sails that were ...
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