ダッソー-システムズMystere–歩

の ダッソー-システムズではないと思います。452Mystère is a 1950s French fighter-bomber. After the success of the Ouragan, Dassault was working on a more advanced machine based on it, which would take to the air in early 1951 as the MD.452 Mystère I. The first prototype Mystère I was essentially an Ouragan with a 30-degree swept wing and modified tail surfaces. Two further prototypes followed, powered by the Rolls-Royce Tay 250 centrifugal-flow turbojet, an improved version of the Rolls-Royce Nene, built under license by Hispano-Suiza, and rated at 28.0 kN (6,300 lbf) thrust.

ソース： グラマンF6F HellcatをWikipediaで調べる