7 September 2010 Bus vent design evolution for the Solar Dynamics Observatory
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As a spacecraft undergoes ascent in a launch vehicle, its pressure environment transitions from one atmosphere to high vacuum in a matter of minutes. Venting of internal cavities is necessary to prevent the buildup of pressure differentials across cavity walls. Opposing the need to vent these volumes freely into space are thermal, optical, and electrostatic requirements for limiting or prohibiting the intrusion of unwanted energy into the same cavities. Bus vent design evolution is discussed for the Solar Dynamics Observatory. Design changes were influenced by a number of factors and concerns, such as contamination control, electrostatic discharge, changes in bus material, and driving fairing ascent pressure for a launch vehicle that was just entering service as this satellite project had gotten underway.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael Woronowicz, Michael Woronowicz, } "Bus vent design evolution for the Solar Dynamics Observatory", Proc. SPIE 7794, Optical System Contamination: Effects, Measurements, and Control 2010, 77940Q (7 September 2010); doi: 10.1117/12.864484; https://doi.org/10.1117/12.864484

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