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Keith Stewart

  • M2038
  • Co-founder of airbeams
    http://www.spoke.com/info/p5GzrZC/KeithStewart 
    The use of inflated sails for ship propulsion.
    Abstract
    Elevated sails or (kites) have been used by a number of proponents of this technique on vessels ranging from outright speed vessels to commercial displacement vessels, mainly as research projects.
    The purpose of this paper is to discuss the author's practical experience gathered over the last 9 years and then to detail some of the possibilities that are being created by new materials and heat sealing technology that he is presently applying to both elevated and non elevated inflated sails. Included are wing sails and vertical sails (which do not necessarily need masts) and can be warped to achieve the desired direction of travel, as well as inflated magnus effect rotors.
    • (Stewkie Aerodynamics Limited). 

      Available online 27 February 2003
      Elevated sails or (kites)
  • Catalyst and leader in power kiting sports
  • http://www.ayrs.org/Index08.html   Chapter 8) Kites - hapas, gliders, tethered rigs
  • http://www.ayrs.org/
  • Catalyst - Journal of yacht research
  • Early European kiteskiers were Keith Stewart and Theo Schmidt (AWEIA member.  http://www.dcss.org/speedsl/ST89refs.html   http://www.ihpva.org/HParchive/PDF/hp51-2001.pdf ) , who also was among the first to waterski with kites. American Cory Roeseler together with his father William developed a Kiteski system for waterskiing and began winning in windsurf races featuring high following winds, such as in the gorge of the Columbia river.
  • http://www.ihpva.org/HParchive/PDF/22-v7n1-1988.pdf   Human Power.
  • http://en.wikipedia.org/wiki/Snowkiting
  • Riding the Wind With a history way back in antiquity, the kite today is finding more applications than ever. These developments are largely due to scientific design. by Nick Laurie, editor of European Kiteflier and secretary of the European Kiteflier's Association.  in New Scientist, page 922f, 28 September 1978.   Mention of Keith's crossing of the English Channel by kite power was briefed. A technical note on Cody's tactic of rings and cones is included.  "Keith Stewart crossed the English Channel last year on a 10-foot catamaran towed entirely by kite power. The journey took him a little over four hours that time, but he is talking now of a 20 000-square-foot kite which may significantly reduce the journey time! These kites are delta shaped with two lines which can be used to steer the kite over a 150 arc thus enabling them to seek out the most suitable breeze for any course at any altitude."
  • http://www.dcss.org/speedsl/refs.html
  • Dave Culp: "Way back in January, 1978, I met a British kite manufacturer, Keith Stewart, at a trade show.  Keith was selling big 150-300 square foot delta kites with inflatable leading edge tubes, for pulling three wheeled trikes over beaches and marshes. I looked through his exhibit and something clicked. Here was my inclined rig, available right off the shelf! I'd take Keith's kites, my boat and controls, and "look out world!"    Source
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