Like the very center of eye of a hurricane or the very center of a high pressure system there is often no wind. Because there is no discernable...
Thanks . I've posted in rc sailing groups on Facebook and ian holt has replied. I think he has has his own ideas about a the practicality of an rc...
A glider is given energy from an external source being air moving against the opposing force gravity. A sailboat is given energy from an external...
The big difference is boats dont gather potential energy. They gather kinetic energy in the leeway direction. Just because the boat isn't going...
That diagram assumes the angle of attack on the running sail is 180°. Its not . It's at 90 degrees.. 180degrees to the boat centerline not the...
And in the case when it's in an up draft it will maintain altitude while the energy from the external source brings the glider analogy closer to a...
But to remove the confusion that the engine in a powered plane take the case of a glider. let it be a sail plane, hang glider or paraglider....
Although the weather hasn't been with us in months the usual wind is from the south west here. Coming down a short valley across the sand bar...
I agree with your basic premise but I disagree with "a sail is not a wing" analogy.
Yes I agree with all you have said above. But to compare wings to sails play the scenario of a wing on rails . Given the same wind a angle of...
Thrust pushes forewarned. It has direction and magnitude. Vector You use force and moment interchangeably. They are not the same thing. Boats...
Planning to make an rc version of sailrocket with the objective of setting a world record for rc sailing.. i believe the current record...
You should be. I am proposing that, in the language of physics your physics languages wrong and for the purpose of describing how boats use the...
Your entire argument (pardon the pun) hinges on the forces acting through the center line of the boat. You do not use the force perpendicular to...
That is all true but only after the fact of the boat heeling over. Take ETNZs AC72 doing a bow down around the mark caused by a pitching moment...
It is adverse if no moments or forces oppose leeway and heel. But we do have centerboards and we do sit on the weather side of the boat. Any...
Excuse me if I come across as new to the forum (I am). Still trying to figure out how to reply here. But anyway, the way I understand the problem...
