High-Speed Waveless Hovercraft(revolutional design)

[waveless]

High-Speed Waveless Hovercraft

The principle of High-Speed Waveless Hovercraft is same as “High-Speed Waveless Boat”, but wetted surface areas of Waveless Hovercraft is about 10% of normal boats. It will greatly reduce the friction resistance of the boat. High-Speed Waveless Hovercraft is different to the normal hovercraft, the air at the bottom of the hull is never leak out from the hull. The air pressure at the bottom of the hull is controlled by air pump to lift the boat up.

High-Speed Waveless Boat:
http://boatdesign.net/forums/showthread.php?t=8177

[waveless]

Hello,

If you need to build a new boat, please email to me!

email: yanchuan_wu@hotmail.com

[kach22i]

Originally Posted by waveless

High-Speed Waveless Hovercraft is different to the normal hovercraft, the air at the bottom of the hull is never leak out from the hull. The air pressure at the bottom of the hull is controlled by air pump to lift the boat up.

In a normal hovercraft, the air leakage has a function. The air leaking out the bottom "air gap" acts as a lubercant. Air has around 100 times less resistance than water - well a lot more anyway.

The design shown will work in model form on a very flat surface (fixing the stern seal). In real life, that is to say; scaling it up, real world things come into play. They come into play in a brutal unforgiving way and often at great expense.

An air cushion 100% contained - just like with the "waveless boat" the concept of suction or surface adhesion is being ignored in a big way.

I'm not sure what you are planning to do with the stern/back seal - just don't see continuity in the images. If I'm reading it correctly it will act as a big water catcher and drag brake or at best a second bow with double the resistance of a single bow. Didn't Leo tell us that to lower the wake and resistance make the hull/bow narrower? You have a wide bow, and two of them.

The bow/front will encounter many things that do not compress, compress well or deflect in your favor. Number one is waves over water - the impact is unforgiving on a hard hull unless you slice through the water or plane over it. This design can't make up it's mind.

Over very flat ice a full scale craft might work for a little while. That is unless a tail wind makes the front dig in, or a side wind causes one side to make contact and spin you around like a top or worse.

Keep working on it - I'm afraid if I say too much I will discourage you.

Your best teacher will be mocking up a 1/10 or 1/12 model. You just can't "re-think" something; you have to demonstrate your theories in practice and learn the old fashion way, by doing.

[Leo Lazauskas]

Originally Posted by waveless

High-Speed Waveless Hovercraft

The principle of High-Speed Waveless Hovercraft is same as “High-Speed Waveless Boat”, but wetted surface areas of Waveless Hovercraft is about 10% of normal boats. It will greatly reduce the friction resistance of the boat. High-Speed Waveless Hovercraft is different to the normal hovercraft, the air at the bottom of the hull is never leak out from the hull. The air pressure at the bottom of the hull is controlled by air pump to lift the boat up.

High-Speed Waveless Boat:
http://boatdesign.net/forums/showthread.php?t=8177

A nice looking vessel, but it is *not* waveless. Again you seem to be making claims for performance that you are unwilling to substantiate, either mathematically, or experimentally.

[masrapido]

And boat sides are solid, looking your drawing. How can a solid body touch the surface and not make waves? Maybe you would get lucky at slow speeds, but once you accelerate waves must appear. Your boat's nose will also generate a lot of waves by simply pushing the water in front of it (sea is not flat. only water in test pools is flat-surfaced)

Another problem is the hole in the water below that would form when the pressure reaches certain level. Your boat would sink into that hole and lie lower than when stationary. For an idea like this to work, you would have to have ultra light boat to benefit from air pressure under the hull. Do what I did: get a course in boat design first. (I just started...)

[waveless]

How can a solid body touch the surface and not make waves?
==============================================
The sea makes wave, I can't lets quiet.

The waveless boat means less wave.

[Leo Lazauskas]

Originally Posted by waveless

How can a solid body touch the surface and not make waves?
==============================================
The sea makes wave, I can't lets quiet.

The waveless boat means less wave.

No, it means that you are *hoping* it makes less. It might make more waves than a conventional vessel.

[waveless]

No, it means that you are *hoping* it makes less. It might make more waves than a conventional vessel.
=======================================================

if a section tube put into flowing water, it will generate less wave than a solid sylinder. this is the general knowledge. I can say that my design will generate less wave, because less resistance act on the boat.

you may need to tell me why it It might make more waves or equal.

In waveless boat, you say the resistance will be biger, because the wetted surface areas is 3 times than the conventional vessel. how many times wetted surface is for the Waveless Hovercraft?

I was work in a research institute for many years, you do not need to tell me how to write a discourse.

Because I can't make experiment, this is why I write here.