Abstract. Features of development, creation and testing of experimental sample of space plasma flow sensor using precision selective elements from nanostructured materials and a four-section collector are considered. The design features of the experimental sample of the plasma flow sensor based on the Faraday cylinder are discussed. Results of complex tests of physical functioning of the experimental sample of the cosmic plasma flow sensor and its selection elements are presented, calculated characteristics of the sensor are compared with results of the experimental studies. The comparison demonstrates a good agreement between blocking characteristics of the four-collector sample of the DP-10-34-4K sensor at normal and oblique incidence of the ion flow upon the sensor input window with corresponding calculated data, and thus confirms the possibility to reliably measure the transport flow velocity and its temperature in the isotropic approximation. Angular characteristics of the four sensor manifolds are symmetrical enough to coincide with the calculated ones, which allows using one sensor to determine the magnitude and direction of the ion flux, thereby reducing the mass of the device into which the sensor will be embedded.

Keywords: space experiment, solar wind, plasma flux sensor, Faraday cup, precision selective elements, photoelectric, angular, and energy cutoff characteristics

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