(See in main text and Appendices A3 / 6, chapters Damblanc and Damblanc-Mutti).

"Louis Damblanc"

-Louis Damblanc was specialized in mechanical research, aeronautics, astronautics and optics, and is considered a pioneer of French astronautics.

-Although it is not expressly indicated, it seems that the variable compression radial engine was his job.

-But he is much more remembered for his tests on rocket engines based on black powder and solid fuels, collaborating with the Pyrotechnics School of Bourges.

-In the 1930's he made important experiments for its use as signal and postal service, some rockets were multi-stage.

“Damblanc's postal rocket for short distances”

-The following is a detail or part of the Damblanc patent on multi-load rockets.

“Damblanc rocket patent drawing”