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CONTENTS #12 (December) 2021

Simulators of the Solar Radiation: Demands and Performance Criteria (p. 3 – 19)

V.A. Ulyanov, N.P. Sizyakov, A.D. Polyakhov

Assay values of demands of the standard documentation regulating processes of experimental working off of photo-electric devices, environmental tests on durability to a solar radiation and thermal vacuum tests of space installations are presented. Demands to simulators of a solar radiation and the criteria applied at an estimation of their quality are generalized. Existing methodical, metrological and algorithmic maintenance of the named aspects of tests are observed. By results of researches recommendations about methodical and metrological maintenance of maintenance of simulators of a solar radiation are developed.

Keywords: products of space-rocket technics; thermal vacuum tests; power light exposure; the solar radiation simulator; a control plane of the simulator of a solar radiation; working area of the simulator of a solar radiation; a radiation spectrum; spectral misfit; radiation detectors; metrological maintenance of tests.

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Methodology for Estimating the Preliminary Mass of the Propulsion System for a Nanosatellite
(p. 20 – 30)

A.D. Maksimov, T.A. Chubenko

With the rapid development of technologies and tasks performed by nanosatellites, equipping them with devices for motion of center of mass and around it has become critically important. This paper presents propulsion systems based on various physical principles, shows their structural schemes and the subsystems included in them. A method of preliminary calculation of the mass of the propulsion system for a nanosatellite is proposed and tested.

Keywords: nanosatellite; propulsion unit; rocket engine; mass calculation.

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Analysis of Results of Calculation of Samples from PСM, Executed in the Settlement MS.Excel and ANSYS Program with Given the Choice of Strength Criterion (p. 31 – 38)

E.A. Basharov

A comparative analysis of results of calculation of samples from polymeric composite materials (PCM) in the settlement program on the basis of MS.Excel of the strength analysis of a composite multilayered package on the basis of the built-in Visual Basic for Applications programming language with results of calculation in the ANSYS complex is described. Produced justification of a choice of strength criteria at initial design of products from PCM is made, and also the assessment of degree of convergence and a divergence of calculations is given.

Keywords: polymeric composite material; laminate; strength criteria; design of composite structures; automation.

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Evaluation of Technical Aspects of the Implementation of the Radio Control Channel of Unmanned Aircraft Systems in the Tasks Of Integrating UAS into a Single Airspace (p. 39 – 53)

D.G. Pantenkov, O.E. Ermolaev

The radio data link is a key element of the unmanned aircraft system (UAS) providing the remote pilot command and control capability. The high requirements to the robustness and operational continuity of data link push the developers to suggest new technical solutions. The various technical aspects of the data link implementation are discussed in the frame of UAS integration in the common air space.

Keywords: unmanned aerial systems; air traffic control; automatic dependent surveillance; air traffic collision alert; remote pilot station; line-of-sight control and command radio data link; satellite data link.

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Technological Design of Small-sized Carbon Fiber Parts with Complex Geometry Used in the Features of Unmanned Aerial Vehicles Design (p. 54 – 60)

V.V. Sokolov, S.I. Voinov, J.V. Agashina, P.Yu. Antipov, O.A. Golishev, S.V. Dolinsky

The process of technological design of small-sized carbon fiber parts with complex geometry is considered. Approaches to the placement of splicing points of woven blanks when laying out a preform are presented. As a result of the studies carried out regularities were established that relate the number and location of splices in the reinforcing layers of CFRP and its mechanical characteristics (tensile strength).

Keywords: software Fibersim; carbon fiber reinforced plastic; splicing of layers.

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Rational Lift-to-drag Ratio of Hight Altitude Long-endurance Unmanned Aerial Vehicle (p. 61 – 70)

A.B. Guseynov, I.K. Konyukhov

In this study, an attempt is made to justify the required value of L/D ratio in relation to a multi-purpose long endurance unmanned “flying wing” vehicle. The influence of geometric parameters (wing aspect ratio, trapezoidal ratio, sweep, and thickness) on the L/D ratio, weight and radar cross section has been determined and approximate values of rational L/D ratio have been obtained.

Keywords: unmanned aerial vehicle; flying wing; lift-to-drag ratio.

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Index of articles published in the All-Russian Scientific and Technical journal "Flight" in 2021 (p. 71 – 72)

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