JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleApplication of excel static temperature analysis to SLRA
Author(jpn)石井 忠司; 國森 裕生; 竹内 央; 古賀 茂昭; 洲崎 保司
Author(eng)Ishii, Tadashi; Kunimori, Hiroo; Takeuchi, Hiroshi; Koga, Shigeaki; Suzaki, Yasuji
Author Affiliation(jpn)次世代技術; 情報通信研究機構; 宇宙航空研究開発機構; 翔エンジニアリング; ユニバース
Author Affiliation(eng)Jisedaitech L. P.; National Institute of Information and Communications Technology (NICT); Japan Aerospace Exploration Agency (JAXA); Sho Engineering Corp.; Universe Pty.
Issue Date2008-05
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第27回宇宙エネルギーシンポジウム 平成19年度
The Twenty-seventh Space Energy Symposium
Start page126
End page130
Publication date2008-05
AbstractA simplified method to compute static temperature using Microsoft Excel is presented in this report. There are two ways for prediction of temperature. One is transient temperature analysis, and the other is steady state analysis. For the thermal design of spacecrafts, both are important. We ordinarily use the maximum and minimum temperature obtained by the steady-state thermal analysis for the preliminary design. Therefore, although this method cannot treat large models, it is useful for preliminary design level. Because the heat transfer equation is a first-order differential equation, it can be easily solved by using MS (MicroSoft)-Excel. Temperature analysis using Excel are widely performed. But in many cases, they use cells as a meshes of the target's shape. The method that we developed this time simply uses Excel's worksheet as a data of thermal properties, and the calculation is done by Visual Basic for Applications (VBA). The analysis is done by using iterative sequential process and the equilibrium temperature will be calculated. The Excel sheet used for this method has good readability and can be used for a report directly. Because the calculation is coded by VBA, the code is easy to maintain. The calculation is done by VBA interpreter, so it is faster than ordinary Excel process. We applied this method to analyze the temperature of SLRA (Satellite Laser Reflector Array) equipped in ASTRO-G (Radio-Astronomical Satellite), and had a good result that agrees with an analysis using SINDA (System Improved Numerical Differential Analyzer) and detail model.
Keywordscomputer program; computer programming; thermal analysis; heat transfer; differential equation; thermal design; ASTRO-G; Radio-Astronomical Satellite; laser reflector array; spacecraft temperature; steady state; thermodynamic equilibrium; 計算機プログラム; 計算機プログラミング; 熱解析; 熱伝達; 微分方程式; 熱設計; ASTRO-G; 電波天文衛星; レーザーリフレクタアレイ; 宇宙機温度; 定常状態; 熱力学的平衡
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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