Drag on a spacecraft produced by the interaction of its magnetic field with the Earth's ionosphere. Physical modelling
| Autor: | V. A. Shuvalov, Yuri P. Kuchugurnyi, N. A. Tokmak, Nikolai B. Gorev |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
020301 aerospace & aeronautics Drag coefficient Spacecraft business.industry Aerospace Engineering 02 engineering and technology Plasma 01 natural sciences Magnetic field Computational physics 0203 mechanical engineering Drag Magnet Physics::Space Physics 0103 physical sciences Dynamic pressure Magnetic pressure Astrophysics::Earth and Planetary Astrophysics business 010303 astronomy & astrophysics |
| Zdroj: | Acta Astronautica. 166:41-51 |
| ISSN: | 0094-5765 |
| Popis: | The dynamic interaction of a “magnetized” sphere (a sphere with a magnetic field source) with a hypersonic rarefied plasma flow was studied experimentally to model the interaction of a “magnetized” spacecraft with the ionospheric plasma. The experiments were conducted at the plasma flow velocity parallel and normal to the sphere's magnetic field. The electromagnetic drag coefficient was determined as a function of the ratio of the magnetic pressure to the dynamic pressure and the ratio of the mini-magnetosphere dimension to the spacecraft dimension (sphere radius). It was shown that a spacecraft's magnetic field of about 0.8–1.5 T produces an electromagnetic drag comparable with the drag produced using ion beam technologies of space debris removal, which require dedicated spacecraft with plasma accelerators. Energy-efficient compact sources of a 0.8–1.5 Т magnetic field for space debris objects may be made using special arrangements of small-size permanent magnets – Halbach arrays. |
| Databáze: | OpenAIRE |
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