Thermal Modeling of Lidar Payload in a Remote Sensing Satellite under System Level Considerations with a Review on its Challenges

Khoshsima, Masoud; Shahryari ‎, Mehran; Ghazanfarinia, Sajjad; Emami, Shiva; Saffar Talori, Yaser

doi:10.30699/jsst.2023.1429

Thermal Modeling of Lidar Payload in a Remote Sensing Satellite under System Level Considerations with a Review on its Challenges

Document Type : Original Research Paper

Authors

Masoud Khoshsima ¹

Mehran Shahryari ‎ ²

Sajjad Ghazanfarinia ³

Shiva Emami ³

yaser saffar Talori ⁴

¹ Assistant Professor, Satellite Systems Research Institute, Iranian Space Research Center, Tehran, Iran

² Instructor, Satellite Systems Research Institute, Iranian Space Research Center, Tehran, Iran‎

³ M.Sc., Satellite Systems Research Institute, Iranian Space Research Center, Tehran, Iran‎

⁴ Ph.D. , Satellite Systems Research Institute, Iranian Space Research Center, Tehran, Iran‎

10.30699/jsst.2023.1429

Abstract

The results show that the lidar in cold orbital conditions has a temperature increase of about 38 degrees Celsius due to thermal design. Also, the range of temperature fluctuations before applying thermal design in the cold state of temperature changes in a circuit is about 14 degrees and after designing these fluctuations have been reduced to about 5 degrees. In hot conditions, the temperature conditions have improved a lot after the design and the maximum operating temperature is about 27 degrees the average temperature has decreased by about 22 degrees, while the temperature fluctuations have also decreased by 21 degrees. A significant temperature increase has occurred in the receiver after applying the thermal design in cold conditions, which is still within the allowed range. This is despite the fact that in hot conditions, after applying the thermal design, there was no significant change in the temperature of the receiver. In the case of the reflector, the conditions are completely different, so the minimum temperature in cold conditions has increased by 42 degrees and the maximum temperature has decreased by 7 degrees in hot conditions. In addition, temperature changes have become more uniform in both cases.

Keywords

LiDAR

Payload

Satellite Remote sensing

Thermal control

Numerical Simulation

Subjects

Space subsystems design: (navigation, control, structure and…)

Article Title Persian

مدلسازی حرارتی محموله لیدار یک ماهواره سنجشی بر اساس ملاحظات طراحی سیستمی و مرور چالش‌های آن

Authors Persian

مسعود خوش سیما ¹

مهران شهریاری ²

سجاد غضنفری نیا ³

شیوا امامی ³

یاسر صفار تلوری ⁴

¹ استادیار، پژوهشکده سامانه های ماهواره، پژوهشگاه فضایی، تهران، ایران

² مربی، پژوهشکده سامانه های ماهواره، پژوهشگاه فضایی ایران، تهران، ایران

³ کارشناسی ارشد، پژوهشکده سامانه های ماهواره، پژوهشگاه فضایی ایران، تهران، ایران

⁴ دکتری، پژوهشکده سامانه های ماهواره، پژوهشگاه فضایی ایران، تهران، ایران

Abstract Persian

به منظور شبیه‌سازی حرارتی از نرم افزار ترمال دسکتاپ استفاده شده است. نتایج نشان می‌دهد طراحی حرارتی باعث شده است که محموله لیدار در شرایط سرد مداری افزایش دمای حدود 38 درجه سانتیگراد را ثبت نماید. همچنین بازه نوسانات دمایی قبل از اعمال طراحی حرارتی در حالت سرد تغییرات دمایی در یک مدار حدود 14 درجه و بعد از طراحی این نوسانات به حدود 5 درجه کاهش یافته است. در شرایط گرم مداری نیز شرایط دمایی بعد از طراحی بسیار بهبود یافته و ماکزیمم دمای عملکردی حدود 27 درجه و متوسط دمایی نیز حدود 22 درجه کاهش یافته است ضمن اینکه نوسانات دمایی نیز 21 درجه کاهش یافته است. افزایش دمایی قابل توجهی در مورد گیرنده بعد از اعمال طراحی حرارتی در شرایط سرد اتفاق افتاده است که البته همچنان در محدوده مجاز قرار گرفته است. این درحالی است که در شرایط گرم بعد از اعمال طراحی حرارتی تغییر زیادی در دمای گیرنده روی نداده است. در مورد بازتابنده شرایط کاملا متفاوت است به نحوی که حداقل دما در شرایط سرد 42 درجه افزایش و حداکثر دما در شرایط گرم 7 درجه کاهش داشته است. ضمن اینکه تغییرات دمایی نیز در هر دو حالت یکنواخت تر شده است.

Keywords Persian

لیدار

محموله

ماهواره سنجشی

کنترل حرارت

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