A design strategy for water-based noise suppression systems in liquid rocket engines firing tests

Abstract This paper presents a streamlined design procedure for water-based noise suppression systems that are applicable to multiple classes of rocket engines. A newly adapted steady quasi-one-dimensional two-phase model is employed predict the evolution exhaust gases interacting with water droplets. Such embedded into two-step optimization objective finding most efficient combination suppressor operative parameters. information then used hardware system, which consists in set injectors, task producing atomized jets directed towards gases, and toroidal manifold, delivering injectors at uniform conditions pressure velocity. Finally, proposed applied 15 kN thrust class oxygen/methane liquid engine. Technical specifications resulting system provided along detailed three-dimensional CAD model.