Analysis and Experimental Study of Puncture Leakage Characteristics of Pump-driven Fluid Loop Radiator

Abstract The radiator is a key component of the pump-driven fluid loop in the thermal management system of spacecraft, and it has a high probability of being penetrated by Micro-Meteoroid and Orbital Debris (MMOD). Therefore, for long-life manned spacecraft such as space stations, the study of the leakage characteristics of radiators after breakdown is an important work that needs to be solved urgently. In this paper, the leakage state characteristics of the emitter after leaking are analyzed, and a mathematical model is established to calculate the relationship between the aperture and the leakage volume rate. Finally, the accuracy of the mathematical model is verified by experiments.