بهبود توزیع پتانسیل الکتریکی روی سطوح ماهواره زمین آهنگ با استفاده از پوشش

نوع مقاله: مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

1 دانشکده مهندسی مکانیک دانشگاه تربیت مدرس

2 دانشکده مکانیک تربیت مدرس

3 دانشکده علوم کاربردی، دانشگاه صنعتی مالک اشتر

چکیده

هدف از این پژوهش بهبود توزیع پتانسیل الکتریکی بر روی سطوح فضاپیما با تغییر پوشش آن‌ها به‌منظور کاهش خطر تخلیة الکترواستاتیک در فضاپیما می‌باشد. بدین منظور از نرم‌افزار SPIS که نرم‌افزار استاندارد اتحادیة اروپا برایمدل‌سازی و شبیه‌سازی برهم کنش پلاسمای فضا با فضاپیمامی‌باشد، استفاده شده است. در این راستا، بهترینپوشش‌های استفاده شده در فضاپیماهای اخیر، جهت کاهش آرک انتخاب شده است. بر روی فضاپیما هشت سطح مجزا تعریف و برای هر سطح پوشش مختص به آن انتخاب می‌شود.شبیه‌سازی‌ها با تغییر پوشش این سطوح مجزا از لحاظ اختلاف پتانسیل الکتریکی دیفرانسیلی و شناوری با هم مقایسه و پوشش مناسب انتخاب می‌شود. نتایج به طور متوسط حدود 11 درصد بهبود پتانسیل الکتریکی بر روی سطوح را نشان می‌دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Improvement of the Electrical Potential Distribution on the Surface Geostationary Satellites using Material Change

نویسندگان [English]

  • arman samadi 1
  • Masoud Ebrahimik 2
  • Hossein Jahanbakhsh 3
1 Faculty of Mechanical Engineering, University of Tarbiat Modares
3 Faculty of Applied Sciences, Maleke ashtar University of Technology
چکیده [English]

The main objective of this research is to improve the distribution of electrical potential on spacecraft surfaces by changing the surface coatings to reduce the risk of electrostatic discharge in the spacecraft. For this purpose, SPIS software, the EU standard software for modeling and simulating the interaction of space plasma with the spacecraft is used. The spacecraft has 8 nodes, and each node is related to a particular substance. The simulations were compared with the variation in the materials of these nodes in terms of differential electric and floating potential. Investigating materials that differed in the differential electric potential of zero showed that they are conductive materials. In order to choose among several conductive materials, these materials were compared in terms of electric floating potential. Simulations on satellite surfaces showed an average of 11% improvement in the electrical potential on surfaces

کلیدواژه‌ها [English]

  • Spacecraft charging
  • Electrostatic discharge
  • Differential electrical potential
  • Floating electrical potential
  • SPIS

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