3 - Some thoughts on payload and design

The X-113B is a reverse delta wing design, and this is the design that our senior project team adopted in their model.
What makes me wonder is why did they choose a design that is so sensitive of the location of C.G.
Because of this matter, the payload is likely to have a limit and it can only be positioned at one area, area in front of the wing.
This restrict the usage of WIG to a commercial passenger carrier only. (This is how I feel, may not be true)




So I explored and read about some other design like the Orlyonok designed by Mr. Aleexv, this WIG craft is really fascinating.
The craft is able to achieve height that is rather above the water surface, but seems like it is still in the ground effect zone.
It is huge, the whole fuselage seems to be able to be used for carrying payload.
What's interesting is that there are actually 2 engine at the front to feed air for the wing in order for the plane to be lifted easily during take off.
This is a different design from the classic WIG by Dr. Alexander Lippisch. The wing on the Orlyonok looks like commercial aircraft but with smaller aspect ratio.

I liked this design because the payload seems satisfactory.
However, our project is only using propeller engine as we are not aiming to design a high speed WIG craft, we are not likely to adopt this design.
(But it's really cool)



So

Mr Hanno Fischer, a co-worker of Dr Lippisch, seems to be very concerned with improving the take off ability of the reverse delta wing design.
Because he came up with the idea of getting a part of the propeller slip-stream and guide it under the Katamaran fuselage to build up a static air cushion to assist the take-off, and according to FF(the company), this creates 80% of the crafts weight as lift while speed is still 0.



The WSH-500 is the first large reverse delta wing WIG craft and they are able to do so because they adopted Mr Fischer's idea.
Wingship company actually hired him as a technical advisor.