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before building a scale model out of foam with removable amas to determine the maximum beam and buoyancy. The model did not have a movable rudder and, when a gust of wind hit the model hard and it turned into the wind, he knew he got the design right. When he could not find a mathematical model to
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Horstman was born in
Kalispell, Montana. He made his way from Montana to California via the U.S. Air Force where he was trained as a helicopter mechanic before serving 4 years in Korea. After the war on the GI Bill Ed attended the Northrop Institute of Technology where he earned a bachelor of
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predict the stress on the beams, Horstman again built models of the beams and put them through a battery of stress tests until he was satisfied that his scantlings were strong enough.
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Horstman worked for aviation giants like Boeing, Douglas
Aircraft (on the A4 program), and North American Aircraft where he did wind tunnel tests for the XB-70 supersonic bomber.
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trimarans. He wrote to Piver requesting information on his 35-foot trimaran, but never received an answer. A friend, said, "You're an engineer, why don't you design one."
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He constructed his first trimaran, a 40-footer with $ 600 that he borrowed from his grandmother in 1961. Although influenced by Piver's designs, Horstman diverged by using
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technology to make flush-decked sailboat ""with accommodation in all three hulls—the dreadnaught class of trimarans"
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Before starting, Ed took two courses on hydrodynamics from the
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He designed his first trimaran after seeing an ad clipping for
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designer based in the West Coast of the United States.
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209:. You can help Knowledge by
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118:. Retrieved
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