Wingboat Design

[Doug Carlson]

Its a bi-fluid-biplane. I'll let you work out the controls.

[yipster]

Doug...
your joking yes? swath, even hyswath's level out at speeds of say max 30/40 knt. small waterplane area boats aint racing or flying boats in my mind, thats a fast but displacement design. you mix flying, planing and displacement here. cant see in this drawing how to control that, a very small hydrofoil may be more appropriate to support lift? starting to fantasise! i can dig fantasy and a joke, just letting a frend out that liked your drawing, allready fantasized a everglade air prop and -really!- an airwing on what i'm building here or it wouldnt work he said, so i like to make a serious note here too: creative fantasy is ok but do think ahead, building a idea is seriously no joke than again -who can tell- maybe swigs are feasable?

[SailDesign]

Doug, one too many swigs there, IMNSHO. ;-)
I don't think you'll get the bulb going fast enough for the wings to do anything useful.
Steve "but I _love_ the acronym...."

[yipster]

another one that sparks the imagination but i cant figger out...

[Doug Carlson]

It might be a joke..., but here are my thoughts.

The swath portion rather than having marginal reserve bouyancy concedes its weakness and has slightly less than neutral bouyancy.

There is supposed to be a propellor at the aft end of the bulb.

The nominal hull plus wingtips provide positive bouyancy at rest and slow speeds.

Ultralights and STOLs fly at less than 40kts out of ground effect.

With almost neutral bouyany the wing does not have much to lift in ground effect.

The horizontal foil on the bulb keeps the column vertical fore and aft.

The wing keeps the "boat" level port to starboard both at rest and in flight.

Rudders on the vertical stabilizers cause flat turns about the column.

It might win a race against comparably powered boats in a lumpy body of water.

[SailDesign]

What you gots there, Doug, is more of a HYSWAS than a WIG.

http://www.mapcorp.com/page9.html
http://www.mapcorp.com/page4.html

Steve ;-)

[Doug Carlson]

I like it! It looks like they're using two sets of foils on the underwater body to create lift and control pitch and roll. Thanks.

Doug

PS: I think mine is a friendlier looking thing.

[yipster]

steve, i like it a lot, the motion in the vid is the camera not the boat inrough water. its a 44 mb video download but yes yes yes, i want one, i want one, I WANT ONE
yipster

[SailDesign]

Quote:
yes yes yes, i want one, i want one, I WANT ONE
Unquote

Quiet down, yipster..... ;-)
I dunno - it looks too much like a nautical unicycle for my taste. It's an interesting concept, but draggy as all get-out.

Steve

[Doug Carlson]

It looks to be about a one second loop. At least in this clip the tri-hull appears to be in contact with the surface or at least riding on the bow wave of the area where the tower flares into the hull.

[yipster]

Doug, i made this 2 second ani gif loop clip to give an quik impression, you really have to download -its worth it- the whole 44 Mb (took me 12 minutes) avi to get a good idea what a (is it hy?)-swath can do, when you observe the video closely you can see wavecontact is merely spray and the pilots waving at you!

where did you see "two sets of foils on the underwater body to create lift and control pitch and roll"? i cant find that and guestimate that big prop to vector trust? or a double arelon on the pods tail all hooked up to a sofisticated gyro and pilot systems (dont want to run aground like this)

Steve, theoretically unicycle beats trike, even twin (is in reality 4) just wonder how they do it on one leg... i really like this one! just aint so sure its a wingboat.

[Doug Carlson]

In Steve's reference above (page 9) the lower vehicle's underwater body appears to have the equivalent of a wing and horizontal stabilizer with winglets at the tips of the stabilizer.

I don't think you want to run these things where the bottom is a concern.

[yipster]

thanks Doug, boat pictured that i fell in love with comes from http://www.mapcorp.com/page4.html who knows, maybe it has foldable wings. must have wings somewhere, bulb looks straight while it acts as hyswath. yipster

[Doug Carlson]

Yipster,

If you look on that page at the picture on the lower left, you can make out the wing and stabilizer in amongst the gantry. They are most apparent on the left side.

825 BHP!

[yipster]

thanks again, i missed a 10.4 ft foil! looks like the 27*4 ft bulb makes 8 ton displacement and frictional curves meet wave with 845 hp at 37 knt giving away its propulsion advantages keeping fast wildwater capability. -rough again- calculated; at 20 kts frictional resistance is down to about 20%? still like the concept a lot!

yipster