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John,
I thought about that issue.
But, then I thought about a 440 fpm climb
at 50 mph (4400 fp-minute). That’s a Vcl/Vfor of .1 giving an angle of
5.7391704772667°.
So, the cosine of 5.7391704772667° is .9949874371
plus a smidgen. So, that’s an error of about .005 ( 50*.005= .250628144669
mph ) and I figured it might be easier to leave that part of the calculation
out since, after all, this is to give a rough number.
Dang, I just knew someone was going to
catch me on that.
Any of you who can measure and hold your
airspeed within a fraction of .25 mph will need to use John’s method.
<Big grin>
(Check my figures, guys and gals, it’s
been 38 years since I took that trigonometry class.)
Ed Burkhead
http://edburkhead.com
ed -at-
edburkhead???.com (change -at- to @ and remove "???")
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