18 December 1992 Particulate contaminant removal from spacecraft optical fields of view
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Results of an investigation of four FOV particulate contaminant removal methods - photon flux, neutral molecular flux, ion flux and electrostatic field - are presented. Minimum detectable particle sizes are calculated for IR sensors operating under three different scenarios - ground-, limb-, and space-viewing. Trajectories of particles dislodged from spacecraft at several altitudes are calculated. The neutral molecular flux method is the fastest but suffers from the disadvantages of unwanted thrust and limited gas supply. The ion beam method seems effective but slower, as it requires rastering. The radiation pressure method is energy-inefficient; a large power supply is necessary. The electrostatic field method can be effective only if the altitude is above 10,000 km.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arthur Timothy Chen "Particulate contaminant removal from spacecraft optical fields of view", Proc. SPIE 1754, Optical System Contamination: Effects, Measurement, Control III, (18 December 1992); doi: 10.1117/12.140738; https://doi.org/10.1117/12.140738


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