the average meteoroid density is lower (e.g.Ġ.5 g cm -3) than the average space debris density (e.g.The main differences in both classes of particle The meteoroid environmentĮncompasses only particles of natural origin whereas the space debrisĮnvironment is man-made. Their different properties and characteristics. Meteoroid and space debris environments are presented separately because of For meteoroids, flux corrections due to Earth are Mass-density relations, directional collision velocity distributions andįlux-mass/diameter relations. For both meteoroids and space debris, the models include Spacecraft as a function of mass, velocity, direction, altitude and orbital The environment models describe the particle flux relative to a moving Particle/wall interaction models to estimate the number of Oriented surfaces in a user-defined orbit. Meteoroid and debris particle fluxes on randomly
#Meteoroid definition full
Include a full geometrical analysis, but does allow an estimation of the Meteoroid/debris tool implemented in SPENVIS does not Numerical analysis tool for evaluation of the meteoroid and debrisĮnvironments, impact probability and resulting damage effects. Has to account fully for three-dimensional geometrical and directional effects.ĮSABASE, a multi-disciplinary computer-based toolįor system engineering developed for ESA/ESTEC, includes an enhanced 3D To eliminate approximations and uncertainties, such a prediction tool Proper design of the shielding concept requires the use of analysis tools whichĪllow detailed risk assessment for given spacecraft, shielding design and Shielding of all manned modules required in the International Space Station Which already influcences space missions now and may well become a major aspect Meteoroids and orbiting man-made objects has been recognised as a real problem The possibility of overcrowding space in the near Earth environment with 3.1.5.2 Oblique impacts 4 Implementation in SPENVIS References 1 Introduction.3.1.2 The multiple wall ballistic limit equation.3.1.1 The single wall ballistic limit equation.2.2.4 The MASTER model 3 Particle/wall interaction models.2.2.3.4 Limitations of the NASA96 model.2.2.3.2 Definition of the debris orbit distributions.2.2.1.2 The NASA90 velocity distribution.2.1.5.2 Apex enhancement of the alpha source.2.1.5.1 Separation of alpha and beta source.2.1.2 The Grün interplanetary flux model.Table of contents 1 Introduction 2 Environment models Background: Meteoroid and debris models Table of Contents
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