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

作　　者：Valeriy TRUSHLYAKOV Ivan LESNYAK Alexey PANICHKIN 

机构地区：[1]Department of Aviation and Rocket Building,Omsk State Technical University,Omsk 644050,Russia [2]Sobolev Institute of Mathematics of the Siberian Branch of Russian Academy of Sciences,Novosibirsk 630090,Russia

出　　处：《Chinese Journal of Aeronautics》2024年第1期64-76,共13页中国航空学报（英文版）

基　　金：co-supported by the:state assignment of the Ministry of Education and Science of the Russian Federation-“Research of liquid vaporization processes in the fuel tanks of launch vehicles to improve the environmental safety and economic efficiency of launch vehicles with liquidpropellant rocket engines”(No.2019-0251);state assignment of the Institute of Mathematics of the Siberian Branch of the Russian Academy of Sciences-“Models and methods of data processing to support decision-making processes”(No.FWNF-2022-0016)。

摘　　要：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 propellant 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 investigations were carried out on a Ground-based Experimental Installation(GEI)to determine the coefficient 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 m^(3)/s.Moreover,the acoustic exposure leads to an increase in the mass of evaporated kerosene over a given time by96.1%,and the energy costs are 1756.7 kJ(approximately 50% of the remaining electrical energy).

关 键 词：PROPELLANT WEIGHTLESSNESS Liquid evaporation Heat and mass transfer Acoustics Vacuum Vapor bubbles 

分 类 号：V475.1[航空宇航科学与技术—飞行器设计] V51