The thermal mode control of the space X-ray telescope by the optimal solutions method


Аuthors

*, **

Space Research Institute of the Russian Academy of Sciences , 84/32, Profsoyuznaya str, Moscow, 117997, Russia

*e-mail: semena@iki.rssi.ru
**e-mail: orion@iki.rssi.ru

Abstract

A new method for spacecraft thermal mode control was recommended. This method has been named the optimal solutions method. It is based on three principles. The first one is the joint scaling of thermal problems and models when the problem being solved corresponds to the most appropriate type of mathematical model. The second is the organization of rational information exchange between models of various types. The third is the recovery of the mathematical model parameters from the results of an experiment, which has been optimized for these purposes. For this, the inverse thermal problem is used. The first and second principles provide the thermal models continuity while the model becomes more complex during design development. These principles also mean that all the accumulated information is stored and transferred from the lower-level model to the high-level model. The application of the third principle reduces the error generated by model parameters that have a large scatter and an ambiguous dependence on temperature. The method uses a set of mathematical models. This set includes multi-format nodal and finite element models. This method was applied to the Pavlinsky telescope ART-XC, which is part of the Spektr-RG space observatory. This observatory is currently surveying the sky from the L2 libration point. ART-XC is the first Russian mirror X-ray telescope. The optimal solutions method made it possible to provide a precision thermal mode of its main elements – X-ray mirrors and detectors. At the same time, a positive result received in the absence of experience in thermal control of these objects and in the presence of a critical dependence of their operation from the accuracy and stability of the temperature mode. The successful operation of the telescope confirmed the method correctness. This shows that the method is applicable for solving new problems of advanced spacecraft thermal control.

References

  1. Semena N.P. The importance of thermal modes of astrophysical instruments in solving problems of extraatmospheric astronomy. Cosmic Research, 2018, vol. 56, no. 4, pp.  273–285. DOI: 10.1134/S0010952518040032

  2. Shinozaki K., Ogawa H., Nakagawa T., Sato Y., Sugita H., Yamawaki T., Mizutani T., Matsuhara H., Kawada M., Okabayashi A., Tsunematsu S., Narasaki K., Shibai H. Mechanical cooler system for the next-generation infrared space telescope SPICA. Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 2016, p. 99043W. DOI: 10.1117/12.2232602

  3. Semena N.P., Serbinov D.V., Yascovich A.L., Tkachenko A.Yu., Pavlinsky M.N. The influence of the thermal conditions of a grazing-incidence mirror on its characteristics.Instruments and Experimental Techniques, 2018, vol. 61, no. 3, pp.  408–417. DOI: 10.1134/S0020441218020203

  4. Gardner Jonathan P. et al. The James Webb Space Telescope. Space Science Reviews, 2006, vol. 123, no. 4. pp.  485–606.

  5. Pavlinsky M., Akimov V., Levin V., Krivchenko A., Rotin A., Kuznetsova M., Lapshov I., Tkachenko A., Semena N. et al. Status of ART-XC/SRG instrument. Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 2016, 99051J. DOI: 10.1117/12.2230974

  6. Semena N. et al. ART-XC/SRG: Results of thermo-vacuum tests. Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 2014, 91444T. DOI: 10.1117/12.2055941

  7. Pavlinsky M., Tkachenko A., Levin V., Krivchenko A., Rotin A., Kuznetsova M., Lapshov I., Krivonos R., Semena A., Semena N. et al. On-ground calibration of the ART-XC/SRG mirror system and detector unit at IKI. Part I. Experimental Astronomy, 2018, vol. 45, no. 3, pp.  315–350. DOI: 10.1007/s10686-018-9582-58

  8. Vanichev A.P. Priblizhennyj metod resheniya zadach teploprovodnosti v tverdykh telakh [Approximate method for solving problems of heat conduction in solids]. Moscow: Izd-vo Byuro novoj tekhniki, 1947, 63 p. (Trudy NII № 1, Ministerstvo aviats. prom-sti SSSR. № 25). In Russ.

  9. Semena N.P., Serbinov D.V. Matematicheskaya interpretatsiya teplovogo eksperimenta, imitiruyushhego usloviya kosmicheskogo prostranstva [Mathematical interpretation of the thermal experiment imitating space conditions]. Teplovye protsessy v tekhnike – Thermal Processes in Engineering, 2016, vol. 8, no. 9, pp.  423–431. In Russ.

  10. Kozlov O.Ye., Semena N.P., Serbinov D.V. Ispol'zovanie transformiruyushhikhsya konstruktsij dlya obespecheniya dopustimogo temperaturnogo rezhima lunnykh nauchnykh priborov [Using transforming structures to ensure the permissible temperature condition of the lunar scientific instruments]. Kosmonavtika i raketostroenie – Astronautics and Rocket Science, 2016, no. 2 (87), pp.  133–141. In Russ.

  11. Semena N., Pavlinsky M., Buntov M., Serbinov D., Levin V., Tambov V., Rotin A., Krivchenko A. ART-XC/SRG: Results of qualification thermo-vacuum tests. Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 2016, 990550. DOI: 10.1117/12.2231276

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