Just a thought - possibly the easiest way to fly three tracks at right
angles is by flying parallel to line features such as roads or canals - you
can usually see right angled intersections (near as dammit) somewhere on a
map.
Regards
Roger Mills
G-BVUV
-----Original Message-----
From: owner-europa@aztec.houxou.com
Carson
Subject: Re: GPS Calibration of ASI
>Found out why ftp://avnet.co.uk/pub/europa wasnt working, should be:
>ftp://www.avnet.co.uk/pub/europa
I find <ftp://ftp.avnet.co.uk/pub/europa> works OK for me - but I use
a dedicated ftp tool, Fetch.
>however, i have an improved version for excel
I made a spreadsheet version of the formulae that appeared in Popular
Flying, expanding it to 4 tracks with 4 sets of derivations and
averaging of results, and even constructed a test data generator to
make sure I'd done it right.
However, I did wonder about how easy it might be to fly those tracks
exactly orthogonal to each other, and idly thought about the general
case of several non-orthogonal tracks, but without applying enough
mental effort to cause any output.
I later found that someone else had done a similar thing for the case
of flying 3 HEADINGS at right angles. That seemed at first sight
easier to do than fly tracks.
Then I came across Doug Gray's solution for the general case of any 3
headings/tracks. I have now lost his website address, but still have
his e-mail address, so will try to get in touch with him to see if he
will allow publishing his solution on the Europa ftp site or at least
provide a pointer to his website, where he had a nice description in
a .PDF file and a simple implementation in Excel.
> with some more bits added such as climb/glide ratios and graphs.
>If nothing else it will impress the pfa when you send in your flight
>test report...
Perhaps if you are willing we could put a copy of that on the ftp
site too (send a copy to me or listmaster John Cliff
<john@crixbinfield.freeserve.co.uk>. No point in re-inventing the
wheel, and we certainly want to impress the PFA with how switched-on
us Europa folk are ....
regards
Rowland
PFA 16532 EAA 168386 Young Eagles Flight Leader 017623
Europa builder #435 G-ROWI
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