Mine could not, since I was going to drive them with a pair of push-pull rods on 90º-cranks. The rods would function with much less noise than a...
Yes I have, I wondered about that as well. The double-rod drive system I imagined would not easily facilitate locking both drives "together"....
Side-wheels are obvious but they would either need to be rather narrow, or they'd end up making the boat rather wide overall. I wanted to build a...
I have seen from earlier threads where people suppose that since so many trains use a diesel-electric setup, that it might be a good thing for a...
A quick comparison of motorized outboard jet-drives shows that while they're generally better at avoiding debris, they're not as efficient...
I want to build a small aluminum boat (possibly a pedal-powered) but won't get the time this year. It's just as well, I keep getting totally...
What I have been told, by people who (as a result of research they did for their employers) have been through it: A patent is just a reason to...
And aircraft, too. Don't forget the aircraft. Wikipedia says that the Buckau was only sailing with the rotors for about a year, but this portion...
I have understood them all along, and most aircraft, ship and windmill engineers have understood them as well, which is why you don't see very...
This question is the heart of the matter. Flettner/Magnus rotors have a couple very odd characteristics, in that they take up a very small...
The question I was attempting to convey here was: is the rotor's lift limited by the motor input power, or the prevailing wind, or both? My...
Whoops. I thought you were the OP. ~
Marginally related: here's an odd kite I ran across, using the Magnus effect. Basically sections of ribbon with fishing swivels connecting them....
I gave up looking for comparative information on boats. It seems like every person who ever bothered to think a Flettner rotor boat was a good...
I'm not sure what would be the reason for using multiple disks like that, since as others noted, the loss of pressure differential can only occur...
What these two people built is much more complicated than what you're asking for. ~
The Coandă effect and the Magnus effect are not the same. The Coandă effect occurs over any smooth surface or flow plane, while the Magnus...
Well maybe not. Wikipedia says the NOTAR system uses the Coanda effect, as the tail boom of the MD-500 does not revolve. The Magnus effect is a...
The Flettner rotor is a solution in search of a problem. ......It is most certainly not a sail, if it needs engine power to function--it is...
Yea but restricting the exhaust gas still imparts a load on the engines, in terms of an efficiency reduction. Take some vise-grips and crush...
