Velocity Vectors

[TomP]

Originally Posted by Brian Duff

thanks Tom,
you so often see statments in yacht design books bout how the loads are so poorly understood, and I can see why after looking at those sorts of formulae !

Wild.

I do not know what books you have read, but I have never seen that statement in any of the texts I have.

It is not too terribly diffcult to discern. Simple application of variables and formulae will yield the result.

[Brian Duff]

Don't get me wrong, I understand the process, but as its been said



Those are from Rigger Apprentice and Skene's. I don't want to be obsessive, so I'll stop.

I suppose the testing process will never end and till then, we'll just keep making it 'too strong'.

: )

[TomP]

Let me finish your ill fated attempt at a quote:

"By observing and keeping track of enough successes and failures, designers have developed an empirical data base, and translated that into workable formulas."

Quotes of convienence I suspect.

[Brian Duff]

Tom,
Seems you might be getting riled, chill man

I appreciate the links and refernces you shot out earlier in this post, and value your opinions. This is not a competition, but a friendly learning site. I guess cause we have both been around here a while, I josh a bit with you. All in good fun and don't take offense.

and I didn't even flip the page in ' riggers apprentice', midnight games.. oops !

What I was getting at was that we seem to use a lot of 'safety' factors to get things strong enought to deal with the loads we don't know fully, like the force on a chainplate when the boat is going 6.7kts and hits a reef, or whatever. I guess the density of the reef, stiffness of the hull and so may other factors go in which is why it all just gets rounded up.

Good Fun man !