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Hello,

 

I was wondering if there's a connection between LCF, area of WL, etc., in order to find out a proper distance from the transom (let's say) to the tangent point, from which the half entrance angle iE is measured.

Sadly, I can't find any reference for this matter.

 

See the attached image.

 

Thank very much,

Stefan

post-215-0-56339800-1432013551_thumb.png

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Hi,

 

So far you cannot access any of the information for calculating your quantities by using the hydro computation. Hmmm.... I don't have a good spontaneous idea, sorry....

 

Cheers

Joerg

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Hello,

 

I forgot to tell you that this topic is unrelated to Caeses. Is just a general matter, because when you chose a random tangent point along the waterline you get different entrance angles.

 

Shortly, I'd like to know if it's a standard procedure to measure the entrance angle.

 

Thank you very much!

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Maybe the curve command

getTan()

is what you are looking for? You can ask any curve for their tangent angle in a given plane at a specific parameter position. The parameter position can also be received from an intersection at a certain elevation using

fv()

or

ft()

Just check out the FCurve documentation... does this help?

 

Cheers

Joerg

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Hi Iorga,

 

to be honest, I was not aware that you should take a point somewhere along the WL to define the entrance angle. I usually use the actual tangent value at the very forward end of the WL as entrance angle value. Why would you define it in the way you described?

 

Cheers,

Mattia

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Hello,

 

I mentioned in the previous post that this is not Caeses related, sorry for misunderstanding.

 

Let's say we have a given hull, open it in Rhino, project a line from side and get the full load draft waterline shape seen from top.

 

Is there a specific method, empirical or other way, to evaluate for that given hull it's entrance angle?

I mean, how do I choose the tangent point along the WL curve? 

 

Thank you,

Stefan

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Hello,

 

Sorry for the long delay, I was away from a computer these days.

 

I want to thank you for the replies, though, I can't find a specific method yet. Hmm, I will ask my teachers, and post it back here, maybe someone else is interested about this topic.

 

Kind regards,

Stefan

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