FIELD: ramjet engines. SUBSTANCE: fuel injection rack includes combustion chamber to which oxidizer flow is introduced. Fuel injection rack has nose part with leading edge acted on by flow of oxidizer; it forms in rear part frame of primary injectors; it is located in way of oxidizer flow in transversal direction relative to this flow; it distributes fuel in oxidizer flow. Nose part of rack is formed near its leading edge and is provided with wall. Nose part is formed by one part in form of dihedral angle whose rib forms leading edge of nose part and chamber is formed in its concavity. Provision is made for injection of coolant jets. Wall is permeable for jets of coolant striking against its concave wall and passing through it. EFFECT: facilitated ignition of fuel; enhanced efficiency of cooling leading edge of rack. 13 cl, 12 dwg
