FIELD: jet engine plants of spacecraft. SUBSTANCE: proposed system includes high-pressure gas sources communicated with gas cavities of fuel and oxidizer propellant tanks by means of pneumatic lines, start and cut-off valves and gas reducers. Used as high-pressure gas source is tetra ammoniate of boron of aluminum or diammoniate of boron hydride of zinc made in form of grains having thermal contact with heaters and placed in hermetic containers. EFFECT: improved mass and dimensional characteristics due to making use of properties of some solid materials of releasing great amount of gas at heating through thermochemical reaction. 1 dwg
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