Patent ID: 6164061
Filing Date: 2000-12-26
Classification: F02K,F23R

Abstract:
A fuel injection strut for a ramjet for operating at high Mach numbers and including a combustion chamber for receiving a flow (F) of combustion-supporting gas, said strut comprising:a first end including a stem having a leading edge for receiving said flow of combustion-supporting gas anda second end forming a longitudinal manifold of individual fuel injectors disposed in said flow of combustion-supporting gas transversely relative to a direction of said flow of combustion-supporting gas and distributing said fuel into said flow of combustion-supporting gas,injection means for generating a plurality of jets of a cooling fluid distributed along said stem, anda body having an internal cavity for a supply of fuel, said internal cavity opening at a front end into a front chamber and having main fuel injectors at a stern end, wherein:said stem comprises two-way permeability means for providing two-way permeability to both a cooling fluid and said combustion-supporting gas by providing, at least in a vicinity of said leading edge, a wall of a substantially dihedral shape which defines said front chamber on a concave side, said wall, in a first way, providing said flow of combustion-supporting gas to permeate at least in a region of said leading edge into said internal cavity for fuel combustion at a first Mach number, and in a second way, providing a cooling flow of said jets of the cooling fluid to permeate at least in a region through said leading edge by said injection means, which impinges the cooling fluid on the concave side of said wall at a second Mach number which is greater than said first Mach number.