Dick Johnson methodology for measuring glider performance

Thanks for reply. That is the general understanding I have from reading his articles. I did not think / realised he recorded vario readings. I guess I was after more specifics, how long has he flown for a particular speed, did he need to correct for altitude, temperature etc. Did he made the calculation from altitude loss in kts, etc. Basically I am after the "method" section in his technique. I recall him writing about three tows to 10000 ft, which may point to quite long legs at a particular speed.

Cheers

Paul

Beyond my pay grade.

I would think nowadays performance can be measured much more accurately and easier post flight using analysis software such as SeeYou. Also I believe the true performance of the glider should use GPS altitude and not pressure altitude.

Ramy

On Mon, 11 Jul 2016 09:08:26 -0700, Ramy wrote:

I would think nowadays performance can be measured much more accurately
and easier post flight using analysis software such as SeeYou. Also I
believe the true performance of the glider should use GPS altitude and
not pressure altitude.

The German Akafliegs (aeronautical groups in their universities) still do
rigourous performance measurements on gliders. You could do a lot worse
than reading their papers and/or contacting them.


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