What I envision is a four seat craft with a lot of additional cargo capacity, and if possible making this cargo space useful for sleeping two people inside the plane while it's not moving. It also needs to have the removable wing tips that can be switched with longer wings in order to get better range. Longer wings will allow flying within ground effect at a higher distance above the surface.
I want it to have enough wing area so that it will fly slowly enough to be able to follow the contours of ocean swells and remain in ground effect.
I realize that with longer wings it will be able to fly out of ground effect and so will need to be registered as an aircraft, but that's for later. I hope to initially use two 40 hp industrial (lawn mower) engines like the Kohler Command V twin.
Later, for long range, I might need to switch to larger water cooled engines, and of course, diesels would be ideal for the long range.
However, those figures are for flying out of ground effect, and flying in ground effect can increase fuel efficiency up to 250% but for now I'm going to figure it as if there is no ground effect, which will provide a large fudge factor. On these types of WIGs the horizontal tail is normally a lifting surface because it helps to automatically prevent the unstable pitching up the occurs when the plane increases it's height above the surface. My plan is to use welded aluminum boat construction methods for the hull, engine mounts, and main spar and use foam and fiberglass for the top of the fuselage, wings, and tails. It might not be enough, but I'll try direct drive first, mainly due to impatience I thought it wouldn't be enough but then I saw that the original Airfish 1 got airborne and went 100mph on 13 hp so there is hope. Obviously when it is reconfigured for long range and a large fuel load it will need more power and thrust efficiency. I see that many planes with engines in pods have the prop in front (like the Be-103), but I would prefer it in the back because it allows a lower thrust line.
Originally Posted by Starman It might not be enough, but I'll try direct drive first, mainly due to impatience I thought it wouldn't be enough but then I saw that the original Airfish 1 got airborne and went 100mph on 13 hp so there is hope.
So the pusher props we do see on amphibs tend to be mounted up high and above the wing or above some strakes to try to keep the water out of it. In this case, whether the engines are oriented with the props in front of or behind them, it is still a pusher craft since the props and engines are behind the passenger compartment; and if water went over the wing it would hit the props no matter which way the engines are facing.


I imagine that wood props would split and erode but that aluminum ones wouldn't split but may get eroded a little? The biggest problem WIG craft continue to have in their development is simply that the hydrodynamic forces at play will drive the power requirement, more so than anything flight related.
Then your dynamic effects come into play - as a rule of thumb, it's a good idea to have a substantial thrust margin at this point so as to avoid porpoising. But here's the basic problem, you need power to get off the water but you then don't really need it to cruise (BTW, I think a more realistic cruise speed goal for you will be around 80 to 100 mph). On a smaller vehicle like the failed Flarecraft you will then have a tendency to overpower the craft, which can greatly destabilize the vehicle (long story here and not a very pretty one). The difficult task in designing a WIG is simply that there is not enough reliable information out there to do a good job of it. The bottom line of this is that the project you have in mind is ambitious and there is a lot more to it than a cursory glance might reveal.
Originally Posted by Starman I want to ultimately have a 3000 mile range so I can use it to go to Hawaii, for example. Anyway, 50 mph is more like hopeful minimum practical flying speed if I want to follow larger ocean swell contours but I envision the Pacific being pacific enough to allow flying at a planned long distance cruise of at least 100 mph while still benefiting from some ground effect.
Originally Posted by GESchwarz Wing in Ground = Cartwheel Effect Yes, I expect to put skis on the tips of the reverse delta to help prevent cartwheeling but I didn't draw them in there yet. Originally Posted by orion The biggest problem WIG craft continue to have in their development is simply that the hydrodynamic forces at play will drive the power requirement, more so than anything flight related. I just edited the title to include the word 'boat' so expect a whole new bunch of lurkers here. I'm aware of the excess power situation that WIGs have, but could you state briefly what the source of the destabilization is when overpowered.
I've had my eye on WIGs for about 25 years now and it seems there are plenty of them that have acceptable functionality. The idea that there isn't a lot of design info is fine with me because I like seat of the pants designing and going into the unknown appeals to me a lot.
I'm curious though about this website The WIG Page - information about Ekranoplan and Wing-In-Ground effect craft that I linked to earlier, which is a clearing house for the latest WIG design info.


It's too bad that the Flightship was the victim of more scamming and went under as it looked very good to me.
Also, keep in mind that with the longer wings this vehicle is intended to be an actual 100% aircraft (amphibian) able to fly out of ground effect - with a lifting tail.
Now I need to find out how to make a good model that is waterproof, I suppose balsa wood doesn't fill the bill.
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When I mentioned putting the prop in front I meant in front of the engines, which are still in back. Watch the TV 2012 Super Hawk Aluminum Fish and Ski gravy holder Model Overview from Crestliner uploaded by dm 51acde34d3dbc on.
Crestliner fishing boats and aluminium boats are aluminum ski boat plans ideal for fishing and category fun. On this design I'm relying on the prop being above the big fat wing root and hopefully once the craft gets going fast enough to cause some spray that it will rise up to where all the spray will go under the wing. I don’t believe on that point are any Glen L boat bookshelf plans either incumbrance Rite houseboats plans Ski Boat and Inboard Models individual Axle The proprietary I beam invention safely protects wiring and bracken. Since our low gear plans were sold for home boat construction in 1938 more than Surfski Build In. Water does terrible things to propellers, like splitting them apart and eroding them, and any big gulp of water can cause sudden deceleration of the crankshaft and damage things.



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