LIQUID PROPELLANT ENGINE CHAMBER MIXING HEAD Russian patent published in 2004 - IPC

FIELD: rocket engines. SUBSTANCE: proposed mixing head of liquid propellant rocket engine contains housing and injector face with injectors arranged on face over concentric circles and forming core of head and peripheral row. Deflector installed between injector face and housing of chamber head, forms, together with head housing, oxidizer supply manifold and injector face cooling duct. Each injector is essentially bushing with channels of oxidizer and fuel terminating in cylindrical nozzles and arranged eccentrically relative to axis of housing. Axes of cylindrical nozzles intersect after end face of injector. Axes of nozzle and fuel channels of head core injectors coincide, being parallel to head axis. Axes of all nozzles and channels of oxidizer and axes of nozzles and fuel channels of injectors of peripheral row are arranged at angle relative to each other. Channels of oxidizer are furnished with radial supply duct of oxidizer and are closed from side opposite to nozzle by stops. Injectors are arranged on injector face so that in each row of head core injectors, nozzles of oxidizer and fuel channels alternate over circumference, with sequence of alternation of nozzles of oxidizer and fuel channels of injectors of adjacent row is changed to opposite one. Nozzles of fuel channels in injectors of peripheral row are arranged close to injector face of chamber. Invention provides maximum possible combustion of different kinds of fuel, create pre-face layer of combustion products protecting injector face. EFFECT: provision of stable burning within wide range of engine operating conditions owing to different intensity of mixing in separate concentric rows of injectors. 4 dwg