Cruising Foiler Proposal by Jim Brown

Brown did a great article here: http://www.boatdesign.net/forums/al...ticle-bradiefld-foilers-44716.html#post581213
And in his conclusions he proposed using auxiliary power to get a heavy foiler flying after which sail power would keep it there. I takes a lot of power to get a foiler up and much less to keep it there. This is a very innovative proposal that may have real merit.

 

Meritorious indeed, other than the whole foiler thing...

 

Cruising Foiler

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Huh?

 

Oh I think you know what I mean - I like the design, and better still the designer, right up to the point where the whole foiler thing starts.

 

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What design do you like? So you don't like foils? Or the person that thought of them or what? And why just out of curiosity??
You seem to be having a hard time expressing how you feel-let'er rip!

 

I would like to read this article, but for $20/ month I'll have to pass. Pity.
In my next life, maybe I'll become a "pro" and feel this cost is necessary.

Boats are so expensive without lifting foils I have much the same attitude as TomD.

 

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I'm not sure I understand the concept of liking the design(which is a foiler) "up to the point of the foils"-doesn't compute to me. Browns concept is a FOILER concept-w/o foils it's just another heavy multihull with a very deep prop for the auxiliary.
PS-the price of the sub for "nonqualified" subscribers is $35.95 a year.
http://www.proboat.com/ you may be able to purchase a single issue

 

Dang, Doug. You aren't exactly drawing an enthusiastic crowd, are you?

Somehow I wound up on the email list for Proboat's newsletter, and I've been thinking of buying a digital subscription to the magazine. Curiosity about the article you mention might be what pushes me over the edge to do it...

 

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Hell, I just thought it was interesting-oh, well....

 

Doug,

Not enough information to get interested in. Yet.

 

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Thats interesting. In all the years I've studied foiling design and in all the reading I've done never once have I read of a suggestion like Jim Browns. In all the possible incarnations of foilers as "cruisers" it never once occured to me or anyone I know that powering the boat up on foils and then sailing it would be viable. I've got to hand it to Jim Brown-that is certainly an innovative concept. I hope he can do something with it some day. Gives a new definition to the definition of "motorsailer".
Unfortunately, his idea is only a couple of sentences at the end of the article on Bradfield, but I think it stands out.........

 

So would you pull the prop out of the water once you were up on foils, to reduce drag?

 

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Either that or integrate the prop drive into a foil "bulb"? Many T-foils use a bulb at the joint to reduce drag; I imagine some mechanical guru could figure out how to do it with a folding or feathering prop....

"Bulb" used on Mirabaud mainfoil:

click-

 

"Foil assist" motor sailer: http://www.buildboats.info/motorsailingcat.html Browns concept is for a full flying motorsailer but this is interesting.

 

I didn't realize it was suppose to really fly. Amazing - what you can do with a computer generated cartoon.