Mike Borgelt wrote on 9/5/2018 10:11 PM:
I had to derive this and I later found the derivation in a book called
"Airplane Response to Atmospheric Turbulence" by John C. Houbolt. Yep, that guy
- the one who pushed the Lunar Orbit Rendevous for Apollo.

Thank you for that reference. I had never heard of the struggle between three
methods of making it to the moon - and back. Fascinating!

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1
- "Transponders in Sailplanes - Dec 2014a" also ADS-B, PCAS, Flarm

http://soaringsafety.org/prevention/...anes-2014A.pdf