Thermal Sensitivity Analysis of a Telemetry Antenna in Sub-Orbital Spaceflights
Publish place: International Journal of Reliability, Risk and Safety: Theory and Application، Vol: 4، Issue: 2
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJRRS-4-2_002
تاریخ نمایه سازی: 9 آبان 1401
Abstract:
A thermal sensitivity analysis is performed for an Inverted-F antenna (IFA) at the worst-case thermal condition (reentry phase) of a typical sub-orbital sounding-rocket spaceflight. Electromagnetic simulations show that a ۳۰۰ Celsius change in the IFA temperature, mainly caused by the aerodynamic heating, increases the reflected power by ۱% and decreases the antenna gain by ۲.۵%. The results show that the degradation of antenna performance and the telemetry link quality is negligible. Therefore, the IFA is a good antenna choice for similar sounding rockets from the thermal reliability point of view.
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Authors
Mahmoud Talafi Noghani
Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran
Mohammad Nadjafi
Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran