For best accuracy, remember to correct airspeed for nonstandard temp,
barometer, and elevation.
The #'s below didn't match the chart which comes with RMI's uEncoder,
so I looked in a big booklet on the topic published by the predecessor
to NASA. The #'s look closer to a NACA chart before correction for
compressibility. No factor at glider speeds, but I added a few below
as a sort of a footnote.
Best,
Fred F.
> SPEED WATER
> KNOTS HEIGHT NACA "adiabatic std"
> in mm
> 30 15
> 40 26.5
> 50 41.5 41.5
> 60 59.5
> 70 81.5 81.4
> 80 105
> 90 134
> 100 165.5 166.7
> 110 200.5
> 120 239 241
> 130 380
> 140 325
> 150 373 378
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