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Method for passivation of propellant residues in orbital stage tank of launch vehicle

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The problem of removing unused liquid propellant residues from the tanks of spent spacecraft and orbital stages of Launch Vehicles(LV)leads to their explosion and the formation of space debris in orbits.To provide a solution to this problem,a method for removing liquid pro-pellant residues from the LV tanks after the mission completion is proposed.The method is based on the gasification of liquid propellant residues in the tanks under acoustic-vacuum exposure and the discharge of the gasification products into the surrounding outer space.Experimental investiga-tions were carried out on a Ground-based Experimental Installation(GEI)to determine the coef-ficient of heat transfer from the surface of an acoustic radiator to a liquid.The obtained coefficient was then used to calculate the energy costs for the gasification of kerosene.Numerical estimates are given on the example of the tank with kerosene residues from a spent second stage of the LV"Soyuz-2.1 v".The optimal discharge rate at which kerosene does not freeze is 0.14 m3/s.Moreover,the acoustic exposure leads to an increase in the mass of evaporated kerosene over a given time by 96.1％,and the energy costs are 1756.7 kJ(approximately 50％of the remaining electrical energy).

PropellantWeightlessnessLiquid evaporationHeat and mass transferAcousticsVacuumVapor bubbles

Valeriy TRUSHLYAKOV、Ivan LESNYAK、Alexey PANICHKIN

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Department of Aviation and Rocket Building,Omsk State Technical University,Omsk 644050,Russia

Sobolev Institute of Mathematics of the Siberian Branch of Russian Academy of Sciences,Novosibirsk 630090,Russia

state assignment of the Ministry of Education and Science of the Russian Federationstate assignment of the Institute of Mathematics of the Siberian Branch of the Russian Academy of Sciences

2019-0251FWNF-2022-0016

2024

10.1016/j.cja.2023.09.018

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(1)
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