초록 ▼

A fuel injection stub (6) for a ramjet is intended to operate at a high Mach number. According to the invention, the nose of the stub is formed by a thermally conductive thin wall (11) having at least approximately the shape of a dihedron, the angle of said dihedron being at most equal to 15.degree.

A fuel injection stub (6) for a ramjet is intended to operate at a high Mach number. According to the invention, the nose of the stub is formed by a thermally conductive thin wall (11) having at least approximately the shape of a dihedron, the angle of said dihedron being at most equal to 15.degree. and the radius of the leading edge (11A) of said nose being at most equal to 2 mm, and said stub includes means (23, 27) for injecting a coolant into the sealed chamber (18), said injection means producing a number of jets of pressurized coolant striking the concave face of said thin wall.

대표청구항 ▼

[ We claim:] [1.] A fuel injection stub (6) for a ramjet (1) which is designed to operate at a high Mach number and which includes a combustion chamber (8) into which an oxidizer flow (F) is introduced, said stub (6) including a nose (7) receiving said oxidizer flow and forming a rail of elementary

[ We claim:] [1.] A fuel injection stub (6) for a ramjet (1) which is designed to operate at a high Mach number and which includes a combustion chamber (8) into which an oxidizer flow (F) is introduced, said stub (6) including a nose (7) receiving said oxidizer flow and forming a rail of elementary fuel injectors (24, 25, 26), said rail being arranged in said oxidizer flow transversely to the latter and distributing said fuel in said oxidizer flow, wherein:said nose (7) is formed, at least near its leading edge, by a thermally conductive thin wall (11) having at least approximately the shape of a dihedron, the angle (A) of said dihedron being at most equal to 15.degree. and the radius (r) of the leading edge (11A) of said nose being at most equal to 2 mm; andsaid stub including:a sealed chamber (18) arranged in the concavity of said thin wall (11) of the nose;means (23, 27) for injecting a coolant into said sealed chamber (18), said injection means producing a number of jets of pressurized coolant which are distributed along said nose and strike the concave face of said thin wall, at least in the region of said leading edge (11A); andmeans (28, 29, 30) for removing said coolant after impact of said jets against the concave face of said thin wall (11).