"Rick Cavallaro" wrote in message
...
On Sep 30, 2:50 am, "dennis@home" wrote

You won't explain it from that description as its rubbish.

I'm sure it looks that way to someone that can't understand it.


I can imagine it being done by moving the sail (propeller blades) in such
away that they are effectively tacking across the wind as they would on a
land yacht going sideways but that isn't what is being claimed here.

Of course it is. Can you honestly not see how our "sails" (i.e. prop
blades) are going sideways due to the rotation of the prop, as the
vehicle itself goes straight downwind?

Yes, but that is not enough, but you jumped on it without actually
understanding what I said or how it works.
Draw a vector diagram and you can work it out for yourself.


They are claiming they can develop thrust by removing energy from the
vehicle...

Wrong

Well its been claimed you accelerate the wind in a negative direction using
energy from the vehicle

Let me know when you publish detailed plans and someone duplicates it.