Dassault Mystre

Following the triumph of the Ouragan, Dassault embarked on the development of an upgraded model, which made its inaugural flight in early 1951 as the Mystère I. The initial Mystère I prototype essentially adapted an Ouragan by incorporating a 30-degree swept wing and revised tail surfaces. The subsequent two prototypes were powered by the Rolls-Royce Tay 250 centrifugal-flow turbojet, an enhanced version of the Rolls-Royce Nene, licensed and manufactured by Hispano-Suiza, delivering 28.0 kN (6,300 lbf) thrust. These three Mystère I prototypes paved the way for two Mystère IIA versions, armed with four 20 mm ( in) Hispano cannons and powered by the Tay. Then came four Mystère IIB versions, which replaced the four 20 mm ( in) cannons with two 30 mm ( in) DEFA revolver-type cannons. On 28 October 1951, a Mystère IIA became the first French aircraft to breach Mach 1 in controlled flight (in a dive). The eleven preproduction aircraft that fol