2017.02.20

Hello Paul,

And now another newer german papers ...
11_2015_Turbowankel
 "Turbowankel-Triebwerks-Familie: Neuartige Antriebskonzepte fuer die
allgemeine Luftfahrt der Zukunft"
 2015
 1,47 MB



Perhaps Rolf can tell you a bit about the ideas, that are discussed ... ;-)


With kindest regards

Franky / Frank Herfert

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