Power losses for solar arrays of a spacecraft in the Earth’s polar ionosphere and magnetosphere

Shuvalov, V. A.; Pismenny, N.I.; Kochubey, G.S.; Nosikov, S.V.

doi:10.15407/knit2011.03.005

Cited by 3 publications

(1 citation statement)

References 18 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such "Relative complexity and high cost of tests in situ do not allow us to reckon them as a reliable tool for thorough investigation of the effects of the near-satellite environmental factors". 1 More detailed information about changes in the reflectance properties of SC can be obtained from the analysis of colourimetric observations in particular spectral bands, as well as from the analysis of the reflectance spectrum produced from the SC materials. The proposed method for studying the space environmental effects on the reflectance properties of the satellite surface materials is based on the analysis of ground-based multicolour photometric observations of the sunlight reflected off the satellite using known astrophysical methods.…”

Section: Introductionmentioning

confidence: 99%

Ascertainment degradation of satellite surface optical characteristics by photometric data

Sukhov¹,

Yepishev²,

Sukhov³

2022

AAOAJ

View full text Add to dashboard Cite

The aim of the work is to check the possibility of detecting degradation of the surface of a geostationary satellite according to B, V, R photometry during a long stay of the satellite in space. The change in reflective characteristics in three filters of four geostationary satellites with different platforms over a time interval of 3-9 years is studied. These are geostationary satellites with Eurostar E3000, SSL-1300, Spacebus-4000B2 and Express-2000 buses. It is revealed that the nature of the change in the reflectivity of different geostationary satellites is not the same. Spacecraft materials used for the surfaces of geostationary satellites built in the second decade of the 21st century are more resistant to the rigors of space than those used for satellites built in the late 20th century. The presented results show that the photometric method works and can be used to detect surface degradation of spacecraft.

show abstract

Section: Introductionmentioning

confidence: 99%

Ascertainment degradation of satellite surface optical characteristics by photometric data

Sukhov¹,

Yepishev²,

Sukhov³

2022

AAOAJ

View full text Add to dashboard Cite

show abstract

Physical simulation of the interaction of spacecraft with plasma flows and electromagnetic radiation fluxes in the Earth’s ionosphere

Shuvalov¹

2018

Teh. Meh.

View full text Add to dashboard Cite

This paper briefly overviews the results of the investigations into problems of physical simulation of spacecraft-ionospheric plasma interaction and spacecraft exposure to a complex of space factors conducted at the Department of Ionized Media Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine. Physical simulation is an efficient means to reproduce the spectrum of the basic processes and phenomena that accompany the spacecraft operation in orbit and are initiated by exposure to the complex of space factors, especially to hypersonic rarefied plasma and atomic oxygen flows and solar ultraviolet radiation. To simulate the spacecraft operation conditions in the ionosphere at altitudes of 150 km to 40,000 km, a plasmaelectrodynamic setup was developed and made. The setup combines the properties of a plasma wind tunnel and a vacuum anechoic chamber. The setup served to conduct investigations as part of scientific programs and the development and operation of a number of space hardware products. The distortion of radio reflections from spacecraft structural elements by artificial plasma formations was studied. Processes of radiative electrization of spacecraft structural components were studied. Techniques were developed for accelerated life tests of polymer and composite materials under exposure to atomic oxygen flows and vacuum ultraviolet radiation. Physical simulation based on accelerated life tests allows one to reproduce the conditions of a long-term spacecraft operation: the behavior and degradation of the electrophysical, thermooptical, energy, and mass-and-dimension characteristics of spacecraft structural materials and coatings. Solar battery exposure to the complex of near-satellite environment factors, which results in power loss and a shorter life, was simulated. The resulting spacecraft material property and system operation degradation rate vs. space factor exposure time relationships allow one to predict the spacecraft material, structural component, and technical system state at any time during the spacecraft operation and may be used at the spacecraft design stage.

show abstract

Photometric method for determing degradation surface of a geostationary object

Sukhov¹,

Sukhov²,

Pavlovskyi³

et al. 2022

Kosm. nauka tehnol.

View full text Add to dashboard Cite

We propose a new method of using photometric data for determining the degradation of the optical parameters of the GSS surface since the GSS’s active operation in orbit. Experimental data on changes in the coefficients of spectral reflection (degradation) of the surface of several geostationary satellites with different types of space platforms over several years are presented. Data were obtained from ground-based photometric observations in filters B, V, and R. Among studied satellites, there are „Astra 2E” (bus Eurostar-3000), „Azerspace 2/Intelsat 38” (bus SSL-1300), „Sicral 2” (bus Spacebus-4000B2), „Сosmos 2520/ Blagovest 11L” (bus Ekspress-2000). It was revealed that the nature of the change in the surface reflectivity for the different satellites differs. Space materials on the surface of geostationary satellites manufactured in the second decade of the 21st century demonstrate that their surface is more resistant to the aggressive space environment than that of the satellites manufactured in the late 20th century. Methods for determining the type of space material and its color in different spectral bands using multicolor photometric observations are proposed. As a continuation or addition to the laboratory method, the authors propose to use the results of ground-based multicolor photometric observations to determine the degree of degradation of the spacecraft’s surface.

show abstract

Power losses for solar arrays of a spacecraft in the Earth’s polar ionosphere and magnetosphere

Cited by 3 publications

References 18 publications

Ascertainment degradation of satellite surface optical characteristics by photometric data

Ascertainment degradation of satellite surface optical characteristics by photometric data

Physical simulation of the interaction of spacecraft with plasma flows and electromagnetic radiation fluxes in the Earth’s ionosphere

Photometric method for determing degradation surface of a geostationary object

Contact Info

Product

Resources

About