The Preliminary Study Of Plume Exhaust Erodes The Lunar Dust Particles In Vacuum Environment

During the lunar lander landing on the moon, the dust erosion caused by theplume of the engine posed several operational hazards, including obscuration of thepilot’s vision, degradation of mechanical components, damage to space suit seals, andclogging of thermal rejection system. In order to making a quantitative prediction ofthese hazards, we have to study the interaction between plume and lunar dustparticles.When the plume of the engine strikes on the surface of the moon, it will causepressure and shear along the moon surface. While the distance between the lunarlander engine and the surface of the moon is declining, the pressure and the shearcaused by the plume will gradually increase, the phenomenon of the plume erodes thelunar dust particles is clearly too. According to Mohr-Coulomb Law, the mechanicalequilibrium equation are established. And we simulated the quality of the lunar soileroded by the plume and the new lunar crater on the moon’s surface through themechanical equilibrium equation. Further, we use particle trajectory method tosimulate the lunar dust particles distribution. We calculated the density and theejection angle of the lunar dust particles in the air.Based on the work in the front we have done, further discusses about the differentparameters on the influence of the plume soil erosion have been made. The results weobtained using the method mentioned above are compared with the data of Apollo11landing on the moon. Good agreement with the result. It proves that this method canuse to predict the erosion between the plume and the lunar dust particles.