david story6

David Barish reports, "higher aspect ratio is one way to increase performance. I would not say it’s the easy way. But it is obvious that the result is a rather sensitive machine." Always discreet, David Barish has never promoted his discoveries. Philippe Renaudin, the Sup’Air importer for the USA, had met him many times with his wing and "homemade" harness, before learning that this amazing old gentleman had invented paragliding 35 years ago! And paramotoring too! And he still has things to teach us. When Phillipe told him that his paramotor mysteriously climbs less well when facing into wind, David replied straightaway that it was to be expected, because the angle of the propeller has been designed for a single pitch angle. The same problem existed for small propeller aircraft during the thirties, and was resolved by variable pitch propellers.