Shakhov Y. Liquid jet coolers-based rocket and space technology launch complexes cryogenic systems efficiency improving

Object - fueling and thermostating processes of the rocket and space objects fuel tanks by the fuel cryogenic components; goal - the efficiency increase of the launching complexes cryogenic systems for fueling and thermostating operations maintenance of the rocket and space objects fuel tanks by the liquid jet cooler use; methods - evaporative cooling processes thermodynamic analysis, single- and multiphase flows thermohydraulic processes mathematical modeling methods, similarity theory and experimental data approximation methods, high-speed flows with interphase heat and mass transfer parameters determination experimental methods, liquid jet coolers full-scale test; results - improvement of the launching complexes cryogenic systems of the rocket and space objects by the liquid jet cooler use; novelty - the rocket and space objects fuel tanks fueling and thermostating pressurized system was improved by the liquid jet cooler use, which, in comparison with the existing system, simplifies the structure and reduces the system mass by the traditional heat exchangers removal, the cryogenic pipelines length and the cryogenic fittings amount reducing, the liquid propellant cryogenic component expenditures decreasing, for the first time, the cryogenic component pumping circulation systems with liquid jet coolers static characteristics and operational capability range calculating method was developed, which makes it possible to determine the adequate to experimental data flow parameters, the liquid cooling process calculating method taking into account the effect of its acceleration by vapour in the adiabatic flow of the boiling flow in the Laval nozzle was further developed on the basis of the one-dimensional motion and heat inflow to the liquid phase differential equations integration averaging use, which makes it possible to significantly reduce the liquid jet cooler characteristics calculation time; implementation degree - three introduction acts, industry - aerospace.