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Hi Hanno,
this sound intersting.
Making things as simple as possible is alsways a
challenge. I have not yet been able to fully
understand your suggestion.
Maybe you could describe in in a little more detail?


Wolfgang




Am Montag, 8. Februar 2010 15:12 schrieb Brad Morris:
> Hi Hanno
>
> You may be on to something.
>
> May I suggest that you construct one and solve some
> navigation triangles using it.
>
> This will help us to understand your concept and way
> forward.
>
> Best Regards
> Brad
> From: navlist-bounce@fer3.com
> [mailto:navlist-bounce@fer3.com] On Behalf Of
> Hanno Ix Sent: Sunday, February 07, 2010 5:44 PM
> To: NavList@fer3.com
> Subject: [NavList] Re: A simpler Bygrave ?
>
> Gentlemen:
>
> So far I have not received any answers why a single
> scale Bygrave  never has been implemented. I suspect
> it has to do with the use of such a thing, however,
> it is not clear to me. However, I am no sailor.
>
> There must be some of you so knowledgeable in CelNav
> who have an opinion. Please, just drop me a note.
>
> Regards
>
> H
>
> PS, again: in the formulae below  x=1...89; should
> be replaced by x=(1:89)/180*PI
>
>
>
> ________________________________
> From: Hanno Ix 
> To: NavList@fer3.com
> Sent: Fri, February 5, 2010 4:43:47 PM
> Subject: A simpler Bygrave ?
>
> Ageton's method can be, mathematically at least,
> performed with a single scale,  log cosec or log
> sec.
>
> Therefore, it should be possible to create a version
> of the Bygrave that contains just a single scale of
> cosec or sec. For convenience, one could add one or
> more cursors as convenient.
>
> Note:  The CelNav on Starpath's Emergency Navigation
> Card can be reduced to this method. Just compare
> their N(x) Table with :   n(x) = logn(cosec(x))  for
> x=1...89;
>
> I can see certain mechanical advantages of a
> one-scale Bygrave. I am sure this has occurred to
> somebody else long ago, too.
>
> Therefore I ask why, despite its seeming simplicity,
> such a version has never been implemented.
>
> Regards
>
>
>
>
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