Of course, what would be the difference? Would a paddle boat pushing against the quay (i.e. acting as a pump, pumping water backwards) work any differently than when it's on the move? It's still paddles, or whatever, pushing a medium backwards in order for the craft to go forwards if nothing prevents it (the quay for the paddle boat, excessive weight in the case of the Leonardo copter)
Michel ----- Original Message ----- From: "Harry Veeder" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, February 21, 2007 9:28 PM Subject: Re: [Vo]: Lifters > Michel Jullian wrote: > > >> >> Indeed. It would be like insisting that a helicopter doesn't work by pushing >> itself against the air, it just doesn't make sense scientifically. But I >> guess >> it does make sense economically for the people who make a living on promoting >> the more mysterious hypotheses :) >> > > > The design in the attachment is suppose to fly by pushing the air. Well > it will certainly push air but it won't fly. However, it can be made to work > as a pump. > > But suppose it did fly...would knowing how it works as pump be sufficient > to explain how it flies? > > > Harry > >
