I have built many models and made many tests to find the right settings for headwind power

 click on the links below or go to index at www.sailwings.net/siteindex.html  for the full list

I have done tests at home but more research needs to be done to establish the best settings in a scientific way

such as here is a "bollard" test: I cannot find any record that such tests have been done? Why not?

Rick Cavellero in USA has demonstrated that a land craft could "sail" directly upwind at more than 2 times the
free windspeed. This was a verified record.

There is no record category for sailing directly upwind on water. But I think the land record demonstrates
the possibility of good efficiency if such a system was used on a boat or a ship.

 see below:


(interesting to note the low pitch
of the wind turbine, which in my tests I have also found is the best for penetrating the wind.)

Rotary Sailing Directory Proof that it works Harvesting the Headwind

Peter Worsley 2023