TY - JOUR ID - 147436 TI - Thermal Sensitivity Analysis of a Telemetry Antenna in Sub-Orbital Spaceflights JO - International Journal of Reliability, Risk and Safety: Theory and Application JA - IJRRS LA - en SN - AU - Talafi Noghani, Mahmoud AU - Nadjafi, Mohammad AD - Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran Y1 - 2021 PY - 2021 VL - 4 IS - 2 SP - 13 EP - 19 KW - antenna KW - Inverted-F antenna KW - Thermal sensitivity analysis KW - Aerodynamic heating KW - Electromagnetic simulation DO - 10.30699/IJRRS.4.2.2 N2 - 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 300 Celsius change in the IFA temperature, mainly caused by the aerodynamic heating, increases the reflected power by 1% and decreases the antenna gain by 2.5%. 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. UR - http://www.ijrrs.com/article_147436.html L1 - http://www.ijrrs.com/article_147436_0a086ed494a5059e0250f5f4ff6a1924.pdf ER -