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A ramjet engine is a mechanically simple aerospace engine that creates thrust by burning fuel similarly to a normal jet-aircraft engine. The big difference between a jet engine and a ramjet is that a jet-turbine uses fans to compress air to optimize combustion, and a ramjet creates air-compression by the forward motion of air through a partially-restricted intake system. Ramjets have no moving parts, which is a big advantage in comparison to the delicate turbine blades in a normal jet-engine, however ramjet engines typically are not very efficient below speeds of Mach 2.  3, fiche 1, Anglais, - hypersonic%20ramjet

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Contribution à la préparation d’essai en vol de statoréacteur hypersonique.  2, fiche 1, Français, - stator%C3%A9acteur%20hypersonique

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Le statoréacteur est un propulseur à réaction sans organe mobile, constitué par une tuyère thermopropulsive et dont la vitesse peut dépasser Mach 5.  3, fiche 1, Français, - stator%C3%A9acteur%20hypersonique

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