@Peter H
Thank you for these two very inteesting new links.
The open-acess archives of the university of Goettingen: Open Access
The vintage gliders book cases of Scale Soaring UK: Scale Soaring UK - Book Case2
They are both in that open access/sharing/published information movement ICAO choosed to increase Flying skill and freedom of trade.
Since some decades someone would like to do secrets with these informations. Sometimes patent Offices accept to privatize already public knowledge and traditional culture or names...
I hope that in the future ICAO after WWII spirit will be stronger again, helped by the web and communities like PPRuNe against today's tendancy to hide information : CVR after crash, algorithms of flight laws, name of report writer ; the latter shows that such secrets don't protect writer's/searcher's/inventor's rights. The real State and Defence Secrets are better protected when comunication rules are not the result of obscurity and tiranny.
Civil aviation development is a Precious Gift of the Military world.
Thanks so much for sharing here and in the shadow,
