The Air Force has recently built a vacuum chamber for simulating LEO and GEO space environments for testing small satellites or satellite subsystems. Four natural environmental sources are provided: broadband solar flux, and narrowband electron, proton, and atomic oxygen fluxes; together with spacecraft charging; outgassing and attitude control Xe ion simulators. Although the chamber has diagnostic sensors to measure the fluxes from the sources at one plane, uncertainties remain about the details of the source emissions, their interactions, and impacts on the chamber. To help address these uncertainties models of the sources are being developed. We have modeled the Atomic Oxygen source and present results of our recent computer simulations. We motivate our choice of the dynamical DSMC code used, and present results such as the AO fluence time history and its spatial distribution over the test article; chamber pressure time history; flow velocity contours; the importance of particle-particle collisions; and attempts to model the motion of residual source-produced O+ ions in the geomagnetic field. We compare with existing measurements.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Simulation of a pulsed atomic oxygen beam


    Contributors:
    Carron, Neal (author) / Boyd, Iain (author) / Frasier, Scott (author) / Thomas, Matt (author)

    Conference:

    Nanophotonics and Macrophotonics for Space Environments VII ; 2013 ; San Diego,California,United States


    Published in:

    Publication date :

    2013-09-24





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Simulation of a pulsed atomic oxygen beam (Invited Paper) [8876-25]

    Carron, N. / Boyd, I. / Frasier, S. et al. | British Library Conference Proceedings | 2013



    Five-electron-volt atomic oxygen pulsed-beam characterization by quadrupolar mass spectrometry

    Cazaubon, Bertrand / Paillous, Alain / Siffre, Jean et al. | AIAA | 1996


    Atomic oxygen simulation and analysis

    Cole, R.K. / Albridge, R.G. / Dean, D.J. et al. | Elsevier | 1987