DEVICE FOR CHEMICAL FIRING OF PROPELLANT COMPONENTS IN LIQUID-PROPELLANT ROCKET ENGINE Russian patent published in 2014 - IPC F02K9/95 

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises cylindrical pipe with cylindrical ampoule filled with starting fuel fitted therein and clamped by shutoff valve screwed in pipe body. Said ampoule consists of cylindrical body, membrane assemblies at its inlet and outlet, said membranes being tightly secured along body edges and can be broken by working fluid. Shaped adapter is fitted at pipe inlet to decrease cavity air volume at ampoule inlet to its minimum. Pipe body inlet is fitted via angle piece directly at gas generator head. Said pipe is mounted in gas generator at position approximating to vertical. Supporting fluoroplastic rings are fitted between starting ampoule, shutoff valve and pipe jointly with rubber seal rings. Drain openings are made at ampoule inlet edges and pipe body. Angle pieces are welded to pipe body to support drain pipes. Baffles with filling and drain devices are spaced apart inside said ampoule and feature minimum axial overall dimension and cross-section area. Note here that filling device is arranged at the boundary of starting fuel zone and inert gas pad. Baffles are spaced apart inside said ampoule and feature minimum axial overall dimension and cross-section area. Note here that helical springs with bent-off lock rings are fitted in piston ends.

EFFECT: fast, reliable and multiple firing.

7 cl, 7 dwg