| 研究課題/領域番号 |
22KF0420
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| 補助金の研究課題番号 |
22F21061 (2022)
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 基金 (2023)
補助金 (2022) |
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| 応募区分 | 外国 |
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| 審査区分 |
小区分24010:航空宇宙工学関連
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| 研究機関 | 国立研究開発法人宇宙航空研究開発機構 |
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研究代表者 |
川勝 康弘 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (80373439)
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| 研究分担者 |
CARDOSO DOS SANT JOSUE 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 外国人特別研究員
CARDOSO DOS SANTOS JOSUE 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 外国人特別研究員
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| 研究期間 (年度) |
2023-03-08 – 2024-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
2,300千円 (直接経費: 2,300千円)
2023年度: 1,100千円 (直接経費: 1,100千円)
2022年度: 1,200千円 (直接経費: 1,200千円)
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| キーワード | Low-thrust / Earth perturbation / Equinoctial Elements / Spiral trajetory / Control |
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| 研究開始時の研究の概要 |
We plan to develop analytical and semi-analytical models to include different disturbing forces in the dynamical system, so that these models will be important tools to enable a better understanding of the dynamics of transfer trajectories from low- to high-altitude orbits with many revolutions, using low-thrusts and under different perturbations in the system.
The combination of these new tools with the fellow's expertise in other astrodynamics topics will bakery for him to pursue a research career.
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| 研究実績の概要 |
During the first year of project, we could follow closely its purpose related to the study of dynamics that will be used by DESTINY+ mission involving different perturbations over a spiral low-thrust trajectory. First of all, a complementary study to update the bibliography of the project was developed. The initial development of dynamical models for different forces presented in the problem using Equinoctial elements was performed with the inclusion of different forces in the dynamical system. The forces due to low-thrust and the flattening at the poles of the Earth were modeled and included in the physical model adopted for the our investigations. As a result, the initial computation of the solutions for these models was performed and numerical results were obtained. These results showed that the implementation of the forces was successful, with the results being validated with works available in literature and also with a high precision orbit propagator. The implementation of the third-body perturbation due to Moon's gravitational pull is in progressing accordingly with the original plan. These first outcomes were presented in at the 33rd AAS/AIAA Space Flight Mechanics Meeting of the American Astronautical Society (Austin, Texas, January 15-19 2023) and published in the annals of the conference in a format of complete article.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
Apart from the results of a significant part of the project being already presented as an article for an important international conference, and new results under development are invited to be presented in a second conference, the additional research that has being developed with external collaborations is creating important results published/in publication for international and important academic journals.
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| 今後の研究の推進方策 |
As mentioned before, the adoption of parameters for the orbital analysis closer to the scenario where DESTINY+ will operate is in progress and the inclusion of other forces as the third-body gravitational perturbation due to the Moon is necessary after certain altitude. Two potentials analysis which might consider eclipse and resonances can be considered during the continuation of the studies.
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