The physical properties and the number density of micrometeoroids and orbital debris are important parameters of the space environment. High-velocity interaction with spacecraft can be of serious concern for the operation of long-lived space structures and for man operations in space. Two experiments devoted to the detection of microparticles were flown recently. They were based on capacitor-type sensors that allowed the detection of particles larger than 1 3    μ m in diameter. One of the experiments, the First Orbital System for an Active Detection of Debris, on the International Space Station was retrieved after space exposure. It was then possible to get additional data and to assess the behavior of the sensors. Laboratory analyses provided clues on the composition and the origin of the impacting particles. The second experiment, the Second Orbital System for an Active Detection of Debris, was deployed on the Satellite for Scientific Applications-D on a sun-synchronous orbit. The behavior of the experiments was nominal, and impact flux data recorded could be compared with earlier experiments and with current flux models. However, in both experiments, a great number of impacts appeared to be not random and could be associated with peculiar events, generating particles at a higher altitude. An attempt to assess the origin and the orbital evolution of the particles is given.


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    Title :

    System for an Active Detection of Orbital Debris in Space


    Contributors:

    Published in:

    Publication date :

    2016-08-31


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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