Information at the MAE.

From Appendix 10: Radiguet & Massiot made very small power engines for aviation like the one on the cover of this presentation catalog.

"Catalog cover"

"Detail of the two-cylinder gasoline rotary"

-They made another very small motor -possibly for models- running on liquid carbonic acid transformed into gas in a generator. The engine is therefore of an exaggerated simplicity, even being rotary.

"Engine for gas models"

"Photo-drawing of the previous engine"