The manufacturer of these engines was Bavarian FlugMotoren AG.

“Sylphe rotary engine”

-They made a 5-cylinder radial rotary engine, with a displacement of 377 cu. in. and its power was 35/40 hp at 1,200 rpm.

From Appendix 9: Below we show another illustration of another radial engine (it does not seem rotary) of this brand, whose construction was carried out by Bavarian FlugMotoren AG.

“Another Sylphe”

-This engine has a different architecture from the one shown in the main text, although it is very symmetrical in the power zone (cylinders). The upper one is rotary.