Using this kind of construction (which I certainly would with your size of sail), I'd insert a wooden wedge-shaped end into your aluminium tubular...
If you're on the "Direct analysis" screen, you have a bar at the top with (L to R) new project, open, save, OpPoint view, Polar View, a box...
Sorry, didn't work for me. I tried at alpha = 1 and nothing happened.
Yes, I think it's enough, though obviously can't say for sure until I've built and sailed it. I deliberately backed away from using UI1720...
After two months ashore and completely away from sailing, travelling in the UK and Kenya, I’m back aboard and trying to get my head around what I...
Let me rephrase that. I'm now certain that if there is a secondary axis of articulation, the amount of articulation must be considerably less than...
Nothing else, really, and even the "poor windward ability" is a left-over from the days when all junk sails were cut without camber.
{answered by private message}
It could be that the off-centre mast, or any other asymmetry, might introduce unknowns that I can well do without. Here's a symmetrical layout...
By eliminating the second axis of articulation, the one which permitted the batten assemblies to bend in an upwards direction. If the batten...
I've written an article for the JRA magazine, going over the whole history of my attempts to make a wing sail, which may be of interest.
I’ve been giving the battens a lot of thought over the last few days. I'd drawn 'batten redesign 3' as an attempt to avoid the problems that arose...
I remain 100% sceptical. Any views from anyone else on this?
Consider the situation when I've just started to reef, on a dead run in a stiff breeze. I've eased away the halyard, and the top of the luff has...
I understand what you mean,but if the sail is greatly twisted, the diagonal lines would actually cause the noses to capsize.
The hinge is at 40% of the chord. The wishbone has a thickness/chord ratio of .33
1) I believe it's purely a function of having introduced the second axis of articulation. 2) I don't believe that was the case. 3)...
I’m now absolutely certain that there cannot be a second, horizontal, axis of articulation in the battens. There can be a malfunction, with the...
If you look at all the high-lift foil shapes, I think you'll find a common factor - the leading edge radius is quite close to 2% of the chord. So...
I really meant that one riblet is certainly worthwhile, two are better but not twice as good, three are marginally better than two, four are ......
