| 摘要 |
FIELD: engines and pumps.SUBSTANCE: liquid-propellant engine (LPE) chamber includes a cylindrical part, a nozzle and a mixing head, which are shaped and regeneratively cooled. The mixing head includes a housing, an oxidiser supply unit, a hydrogen supply unit, a kerosene supply unit, coaxial jet injectors installed in the above units of the mixing head along concentric circles and containing a tubular housing with the main axial channel, which has and axial inlet and outlet, as well as a blind tube at least on one pylon, which is fixed coaxially to the housing inside it and made as an integral part of the pylon and the tubular housing; at that, in the pylon there is at least one inlet through hole along the pylon from external surface of the injector to the axial channel in the blind tube on the side of its blind end; at that, the channel of the blind tube is formed on the side of the outlet with its blind axial channel, and on the side of the inlet with the inlet through hole in the pylon; at that, the main axial channel of tubular housing on the side of the outlet is made with stepped change of flow passage of injectors with reduction of the flow passage of the housing from pylons to the outlet part, in the form of one confuser, on the outlet part of the tubular housing there installed is a sleeve with formation between external surface of the above housing and internal surface of the sleeve of an annular cavity related to the cavity of the kerosene supply unit. In the above annular cavity there arranged are screw channels, on the side of axial inlet of the tubular housing there made is an adjusting element in the form of a chamfer provided with possibility of changing its geometrical parameters at adjustment, the tubular housing is split-type, on external surface of the blind tube arranged in outlet part of the tubular housing there made are pylons interacting with their external surface to internal surface of the tubular housing; at that, longitudinal axes of the above pylons are installed at an angle to longitudinal axis of the injector; at that, in the pylons there made are channels, the inlet part of which is connected to the cavity of the blind tube, and the outlet part of which is connected to the annular cavity formed with the tubular housing and the blind tube; at that, the blind tube is split-type and consists of a pylon part and a tip; at that, a jet nozzle is installed at their joint point.EFFECT: increasing the economy of the working process both at operation of the injector as three-component (oxygen-kerosene-hydrogen) and as two-component (oxygen-hydrogen).4 cl, 5 dwg |
