trezor.io
Rate this file (Rating : 5 / 5 with 1 votes)
ice windsurfing on a frozen lake
trezor.io

Ice Windsurfing On A Frozen Lake

In 1964, during a discussion on water sports over a brandy at his home in Southern California, RAND Corporation aeronautical engineer Jim Drake and his former Rockwell boss and now good friend Fred Payne, who worked at The Pentagon, discussed options for creating a wind-powered water-ski which would allow Payne to travel on the Potomac River. That night they developed the idea of a kite powered surfboard. On later reflection, Drake didn't like the integrity of the idea and dismissed it. There were already a number of sailboard designs available, and Drake also was concerned about the integrity of a design needing taut wire close to a human body to keep the sail upright.
Still developing the idea, Drake's wife met the pregnant Diana Schweitzer, and the two families became good friends through their children. Drake mentioned the idea to surfer Hoyle Schweitzer who wanted to develop it, but Drake was still unsure of how to control and steer what he envisaged in a design concept as a surfboard with upright sail design, whereby the sailor stood upright on the board holding the sail.
The technical problem was that most boats steer by varying the angle of attack in the water between the centre board and the rudder, and Drake's question came down to simple operation of how a standing person could control both the power of the sail as well as the direction of the craft.
In 1967, while driving between his home and a contract at the Norton Air Force Base in San Bernardino, Drake had time to reflect on early 17th century based sail ship control. Rudders then were weak and ineffective, mostly used for trimming course. Hence with multi-masted boats, the sailors would trim the upper sails on the forward and rearwards masts to steer the ship.

File information
Filename:530653.jpg
Album name:Sport and Fitness
Rating (1 votes):55555
Keywords:#ice #windsurfing #frozen #lake
Filesize:58 KiB
Date added:Jan 09, 2013
Dimensions:542 x 700 pixels
Displayed:243 times
URL:displayimage.php?pid=530653
Favorites:Add to Favorites