Mat fuel injection for ramjet operating at a number of high mach

mast (6) of fuel injection for a ramjet adapted to operate at a high Mach number. According to the invention, said mast comprises a carbon-carbon composite body, wherein there is arranged a rail of elementary fuel injectors, and a nose piece (11) constituted by a thin skin of carbon-carbon composite in at least approximate shape of a dihedron whose edge (11A) has a radius of curvature (r) at most equal to 2 mm and whose angle is at most equal to 15 deg .. in said body, are arranged means (23, 27) for injecting a cooling fluid in the sealed chamber (18), said injection means for generating a plurality of pressurized cooling fluid jets striking the concave face of said skin (11).