Rotary engines
Historical references indicate that Rotary Engine production ceased in the year 1918. Nearly 92,400 rotary engines were produced under all licenses. Russian factories may have produced small numbers for reverse-engineering studies up to the year 1919. Barnstormers and other surplus airframe operators used the engines into 1926.
Engine cores and spares became increasingly sparse, thereby rendering many, if not all, engines to the scrap pile. After all, the War-to-end-all-Wars was over, wasn't it? Is it possible that multi-millionare Howard Hughes was the last known operator of a Rotary engine? Check out his long-delayed movie "Hell's Angels" for confirmation. Be wary of inserted stock footage though. The original, uncut, unedited movie is hard to find.
Last edited by evansb; 30th Jun 2007 at 10:15.