doi:https://doi.org/10.2514/1.B37970

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学術雑誌論文

5 技術(工学)

Permalink : http://hdl.handle.net/10228/00007936

Performance of Mixture-Ratio-Controlled Hybrid Rockets under Uncertainties in Fuel Regression 利用統計を見る

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アイテムタイプ	学術雑誌論文 = Journal Article
言語	英語
著者	Ozawa Kohei Shimada Toru
著者所属	Kyushu Institute of Technology Japan Aerospace Exploration Agency
抄録	This paper evaluates various sources of oxidizer to fuel mass ratio (O/F) shifts in hybrid rockets and paths (physical phenomena) through which these O/F shifts affect flight performance. Moreover, the performance increase of O/F control in hybrid rockets is evaluated. Vertical launches of O/F uncontrolled and O/F controlled of hybrid sounding rockets were simulated under two uncertainty models of fuel regression behavior based on experimental data: a) systematic errors with a constant deviation within ±3σ±3σ and 2) random errors subject to a probability distribution. These simulations included all sources of O/F shifts that originated in the fuel regression behavior and all paths through which the O/F shifts affect flight performance. Residual propellant mass and decreases in specific impulse are found to be the dominant causes of performance loss under both uncertainty models. For both cases 1 and 2, the O/F-controlled hybrid rockets maintained the performance expected under nominal fuel regression behavior, whereas the O/F-uncontrolled hybrid rockets had a lower performance by upwards of 6.69 and 4.06% in ΔVΔV for cases 1 and 2, respectively. For case 2, 3008 flight simulations revealed that the worst case of the O/F-controlled hybrid rocket had a 4.06 to 4.49% larger ΔVΔV and 10.5 to 13.3% higher apogee than that of the O/F-uncontrolled hybrid rocket, and that the O/F-uncontrolled hybrid rocket had a 6.61 times larger standard deviation in ΔVΔV. These results mean that the elimination O/F shift in hybrid rockets significantly improves performance, as well as the accuracy and reliability of performance predictions.
雑誌名	Journal of Propulsion and Power
発行年	2020-10-13
出版者	American Institute of Aeronautics and Astronautics
ISSN	1533-3876
DOI	https://doi.org/10.2514/1.B37970
権利	Copyright (c) 2020 by The Authors. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
版	author
査読の有無	yes
資料タイプ	Journal Article
研究者情報	https://hyokadb02.jimu.kyutech.ac.jp/html/100001001_ja.html
連携ID	8464

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Performance of Mixture-Ratio-Controlled Hybrid Rockets under Uncertainties in Fuel Regression 利用統計を見る

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Performance of Mixture-Ratio-Controlled Hybrid Rockets under Uncertainties in Fuel Regression 利用統計を見る

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