... quit my present job, [and drop my other projects] for a year and do this, if someone would provide me and the family a living wage. This, I believe, is...
Tom and all, I was thinking it would take me a great deal of concerted effort to create the water-born [in contrast to much simpler road-born] vehicle that can...
I'm not picking on you, Tom, but what really amazes me is not the disbelief of some regarding DDWFTTW, but rather the persistence of the human belief system in...
... I offered a method several years ago, Theo, which substituted airborne buoyancy for waterborne buoyancy; in effect a propeller-powered blimp, which could...
... From Wikipedia: "Terrestrial refers to things having to do with the land..." I meant not in the ocean. NIce mental picture of power on the moons of...
... Yes Dave, I agree. It should be comparatively easy with a blimp, especially using electric transmission. 1) Imagine drifting along in a blimp over the...
Hi Everyone I've just done an update on my website http://www.geocities.com/pete3223/ Check the latest links if you have five minutes to spare. Comments are...
Dave. I agree that your use of terrestrial is completly correct and unambiguous. However: in reserching the various alternative meanings of terrestrial,...
Dave, You are on to a loser if you specify anything but dead down wind, not +/- 5 degrees but 0 degrees. If you use 5 degrees then with very little friction...
... I'll chip in another 500 pounds, except I offer it as a bet at 5 to 1 odds. 500 pounds for madtom if he can demonstrate that downwind faster than the wind...
Peter, Interesting work, have you picked up that the Monofoil wing system is also self trimming? (www.monofoil.com) . It manages this by being pitch positive...
Peter, Interesting work, have you picked up that the Monofoil wing system is also self trimming? (www.monofoil.com) . It manages this by being pitch positive ...
You're right of course, Bob, but as you say, deviating from DDW makes it easier, not harder to sail faster than the wind. The challenge was to prove it NOT...
Hah! I'm not letting you off that easily! Clearly my use of the term was not unambiguous, or it wouldn't have lead you astray. FWIW, I have now done not one...
... That is really the crux, as the only thing that a blimp has lots of is skin drag (no lift-induced drag, of course), enough to make them fairly slow, and...
I put the challenge up so someone would actually try it in a controlled situation and all I get is its been done so we're not going to do it again or it'll...
Jon Yes, I have noticed the monofoil system. I'm sure using self-trimming is the is the only practicable solution with the speeds you hope to achieve. I...
... Dave, like a truffle hound, I enjoy digging for hidden, thought- provoking ambiguities. ... You don't say whether your studies identified a practical,...
Tom, I have nothing to prove; I'm not the doubter here. ALL of established science agrees that the concept works, ALL of science accepts the physical proof...
... Thought they used pigs, not dogs, to find truffles. I wouldn't know, myself... ... Yes, well, the studies were to find grant money to develop the intended...
Regarding DWFTTW, does anyone know where to find polar diagrams for fast sailcraft. The only source I know of is Bethwaite's High Performance Sailing, and...
Marchaj's Aerohydrodynamics of sailing has some good ones; perhaps his later books do as well. These aren't considering DDW, but rather normal sailing courses....
... What distinction between maths and physics do you have in mind that helps your claim? As far as I know, physics is maths with some empirically derived...
I started this mess here by bringing it up. It's fun to watch where it's going. the constraints on physics are often due only to the perspective of the viewer....
Thanks Dave In Marchaj AHOS 2nd Ed, the only boat-velocity polars I can find are on pages 87 & 138. The latter shows that an ice yacht with L/D=4 would have a...
It's been my experience that real polars of real craft are a bit hard to come by. Manufacturers and designers want to see best case scenarios, and most small...
Dave You can get polar diagrams with a tethered boat. I have tried to interest people in doing this but no one believes you can. We could do it at weymouth...
You can get _rig_ polar diagrams with a tethered boat (lift & drag as functions of wind angle). How do you get the hull's contribution (lift & drag as...
