Analysis of weather balloon data to evaluate the aerodynamic influence on the launch phase of SHEFEX II

IF 1.8 Q2 ENGINEERING, AEROSPACE

CEAS Space Journal Pub Date : 2023-09-13 DOI:10.1007/s12567-023-00513-z

Marius Franze, Philipp Donn

引用次数: 0

Abstract

Abstract In this work, an advanced atmospheric model (IATM) for the flight of SHEFEX II is created and its effect on the aerodynamic loads of the first-stage fins of SHEFEX II is investigated. The atmospheric model bases on weather balloon data collected at the starting day of the flight experiment. The wind data are filtered using empirical mode decomposition (EMD) and reduced by their intrinsic mode functions (IMF) to get wind data without balloon oscillation. Compared to a linear interpolated atmosphere (LATM), the numerical results show no significant influence on the forced motion body loads but there is a high impact of wind on the fins of SHEFEX II as unsteady simulations show an increase up to over 50% of dynamic loading, while viscous effects can be neglected.

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气象气球数据分析评估空气动力对SHEFEX II发射阶段的影响

摘要本文建立了SHEFEX II型飞机飞行的先进大气模型(IATM)，并研究了其对SHEFEX II型飞机一级机翼气动载荷的影响。大气模式基于飞行实验开始当天收集的气象气球数据。利用经验模态分解(EMD)对风数据进行滤波，并利用其固有模态函数(IMF)进行约简，得到无气球振荡的风数据。与线性内插大气(LATM)相比，数值结果显示对强迫运动体载荷的影响不显著，但风对SHEFEX II的翅片的影响很大，非定常模拟显示动态载荷增加了50%以上，而粘性效应可以忽略不计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

CEAS Space Journal ENGINEERING, AEROSPACE-

CiteScore

3.90

自引率

7.10%

发文量

期刊介绍： The CEAS Space Journal has been created by the CEAS Space Branch to provide an appropriate platform for the excellent scientific publications submitted by scientists and engineers. Under the umbrella of CEAS, the German Aerospace Center (DLR) and the European Space Agency (ESA) support the Journal. The Journal is devoted to new developments and results in all areas of space-related science and technology, including important spin-off capabilities and applications as well as ground-based support systems and manufacturing advancements. Of interest are also (invited) in-depth reviews of the status of development in specific areas of relevance to space, and descriptions of the potential way forward. Typical disciplines of interest include mission design and space systems, satellite communications, aerothermodynamics (including physical fluid dynamics), environmental control and life support systems, materials, operations, space debris, optics, optoelectronics and photonics, guidance, navigation and control, mechanisms, propulsion, power, robotics, structures, testing and thermal issues and small satellites. The Journal publishes peer-reviewed original articles, (invited) reviews and short communications.