Hydrofoil craft design

[jejojoy]

Hi i am a naval architect student.i wish to do a project on hydrofoil design.i am searching for general arrangement plan ,midship etc of previously built ships.can anyone help me plz...

[FranklinRatliff]

http://www.foils.org

http://www.hydrofoils.org/

http://www.hydrofoil.com

http://www.lesliefield.com/other_his...hydrofoils.htm

[jejojoy]

thanks....is ther any approximate formula to find the various light ship weights?actually i cud not find anygeneral arrangement,midship and lines plan so far

[FranklinRatliff]

When the boat is not in a foilborne condition traditional formulas for displacement hulls apply.

[jejojoy]

i tried the site .it did contain phtos but no drawings.any other way?i thought traditional formulas were applicable to conventional ships only not high speed crafts

[Panos_na]

Hi!

I am a naval architect student and I am doing a project on hydrofoils too.

I am searching for a long time through the internet, but I have not found any technical drawings for Hydrofoils.

It is easier to find drawings for bulk carriers, tankers, etc, but not for Hydrofoils.

[FranklinRatliff]

Originally Posted by jejojoy

i tried the site .it did contain phtos but no drawings.any other way?i thought traditional formulas were applicable to conventional ships only not high speed crafts

When operating in the displacement condition, a hydrofoil craft IS a conventional ship.

When foilborne, hull shape and displacement can be ignored. You only need to find how much hydrofoil surface you need to support a given weight and where to locate the hydrofoils in relation to the craft's center of gravity.

[jejojoy]

k thanx.wat wil b the midship -longitdinal framin or transverse .which classification society gives scantling formulas 4 high speed crafts...u got any midship diagram?

[jejojoy]

hi panos try the links provided by franklin ratliff.how far have u progressed in ur project ?i ve just started

[tspeer]

Originally Posted by Panos_na

...I am searching for a long time through the internet, but I have not found any technical drawings for Hydrofoils....

Hard to believe, but not all knowledge is avaliable through the internet. Yet.

Try the AMV CD's from IHS at foils.org. You'll find whole multi-volume Navy design manuals for the specification and design of hydrofoils.

[Panos_na]

Originally Posted by jejojoy

hi panos try the links provided by franklin ratliff.how far have u progressed in ur project ?i ve just started

I have just started too!

I am doing the theoritixal part of the project for the time.

Later on, I might start designing a hydrofoil boat.

But I am not sure yet.

[Panos_na]

Originally Posted by FranklinRatliff

When operating in the displacement condition, a hydrofoil craft IS a conventional ship.

When foilborne, hull shape and displacement can be ignored. You only need to find how much hydrofoil surface you need to support a given weight and where to locate the hydrofoils in relation to the craft's center of gravity.

You are partly right.

I order to get the sip foilborne easy and quickly, the hull lines must be appropriate.

Also, when foilborne,you have to consider that the hull must have the right shape, so that you won;t have problems with the waves when the sea is rough.

[jejojoy]

any one plz tell me wer can i find the technical drawings?

[FranklinRatliff]

Originally Posted by Panos_na

You are partly right.

I order to get the sip foilborne easy and quickly, the hull lines must be appropriate.

Also, when foilborne,you have to consider that the hull must have the right shape, so that you won;t have problems with the waves when the sea is rough.

When the seas get rough enough for that to be a consideration, if a boat is still foilborne it's probably going too fast for the conditions in the first place.