Article

Cover

Title

The creation of a high vacuum zone in the aerodynamic wake behind a protective screen in the conditions of orbital flight on the altitude H = 250 – 400 km

Authors

¹O.P. Pchelyakov, ¹V.V. Blinov, ¹A.I. Nikiforov, ¹L.V. Sokolov, ²L.L. Zvorykin

Organizations

¹Rzhanov Institute of Semiconductor Physics SB RAS
Novosibirsk, Russian Federation
²S. P. Korolev Rocket and Space Public Corporation Energia
Korolev, Russian Federation

Abstract

At the heights of orbital flight at the transverse flow around the protective shield unperturbed oncoming flow in the aerodynamic wake behind it there is a stable natural region of high vacuum. In this area of the «space» vacuum the levels of vacuum of the order are reached 10^–14 – 10^–10 mm Mercury and below in the almost complete absence of oxygen and carbonaceous components. When assessing the achieved levels of dilution, it was assumed that the working («shadow») protective shield surface pre-adsorbed impurities are removed, and the speed of its own gas in the area of the track does not exceed this level, which corresponds to a partial pressure of about 10^–14 mm Mercury. The results of the evaluations also showed that from the environment into the vacuum zone for protective shield mostly fall into the «fast» molecules of He and H₂, the thermal velocity which significantly exceed the orbital velocity of flight, and their partial pressure at altitudes of 250 – 400 km five to six orders of magnitude lower compared to the above-mentioned partial pressure of molecules of gas. This article is devoted to the development of the scientific basis of the experiment in the conditions of the orbital flight of the international space station and the justification of its feasibility.

Keywords

space materials science, molecular beam epitaxy, shield, orbital flight, ultrahigh vacuum

References

[1] Zvorykin L. L., Kotov V. M., Krylov A. N. Modelirovanie vzaimodejstviya potoka sil'no razrezhennogo gaza s obtekaemoj poverhnost'yu [Simulation of the interaction of a stream of highly rarefied gas with a streamlined surface]. Мoscow, MEI, 1991, pp. 31–39. (In Russian)

[2] Pchelyakov O. P., Dvurechensky A. V., Latyshev A. V., Aseev A. L. Ge/Si heterostructures with coherent Ge quantum dots in silicon for applications in nanoelectronics // Semiconductor Science and Technology, 2011, vol. 26, no. 1, pp. 14–27. doi: 10.1088/0268-1242/26/1/014027

[3] Klimuk P. I, Zabelina I. A., Gogolev V. P. Vizual'nye nablyudeniya i zagryazneniya optiki v kosmose [Visual observations and contamination of optics in space]. Mechanical Engineering, 1983. (In Russian)

[4] Zvorykin L. L., Mishina L. V., Pyarnpuu A. A. Modelirovanie vzaimodejstviya razrezhennogo gaza s tverdoj poverhnost'yu [Modeling the interaction of a rarefied gas with a solid surface]. Moscow, 1988. (In Russian)

[5] Mishina L. V., Krylov A. N., Pyarnpuu A. A., Zvorykin L. L. Kinetic Modeling of Flows near Complex Form Bodies. Rarefied Gas Dynamics. New York, 1991, pp. 1391–1397.

[6] Pchelyakov O. P., Olshanetsky B. Z., Gutakovsky A. P. Epitaksiya geterostruktur na kremnii v usloviyah kosmosa (predlozhenie na provedenie issledovanij po programme RAN na OK «Mir») [Epitaxy of heterostructures on silicon in space conditions (proposal for research under the program of the Russian Academy of Sciences on the OK Mir)]. IPhS SB RAS, 1996. (In Russian)

[7] Nusinov M. D. Vozdejstvie i modelirovanie kosmicheskogo vakuuma [The Impact and Modeling of the Cosmic Vacuum]. Moscow, 1982. (In Russian)

[8] Beliakov I. T., Borisov Yu. D. Tekhnologiya v kosmose [Technology in space]. Moscow, 1974. (In Russian)

[9] Valiev K., Orlikovsky A. Tekhnologii SBIS. Osnovnye tendencii razvitiya [VLSI Technologies. Major development trends] // Electronics. Science. Technology. Business, 1996, no. 5–6, pp. 3–10. (In Russian)

[10] Ignatiev A. The wake shield facility and space-based thin film science and technology // Earth Space Revew, 1995, vol. 2, no. 2, pp. 10–17.

[11] Ignatiev A., Freundlich A., Pchelyakov O., Nikiforov A., Sokolov L., Pridachin D., Blinov V. Molecular Beam Epitaxy in the Ultravacuum of Space: Present and Near Future // From Research to Mass Production, 2018, pp. 741–749. doi: 10.1016/B978-0-12-812136-8.00035-9

For citing this article

Pchelyakov O.P., Blinov V.V., Nikiforov A.I., Sokolov L.V., Zvorykin L.L. The creation of a high vacuum zone in the aerodynamic wake behind a protective screen in the conditions of orbital flight on the altitude H = 250 – 400 km // Spacecrafts & Technologies, 2018, vol. 2, no. 3, pp. 119-124. doi: 10.26732/2618-7957-2018-3-119-124

This Article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).