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Aerospace Instrument-Making

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ENSURING THAT THE SPENT STAGES OF SPACE ROCKETS FALL INTO A GIVEN DISPERSION ELLIPSE BY MODIFYING THE FLIGHT CONTROL SYSTEM ALGORITHMS
L.V. Krotova, А.Y. Nikolaev, V.V. Duga

The article considers a fundamentally new approach to minimizing the areas of the actual dispersion ellipses of the separating parts of space rockets, which is based on the inclusion of new flight algorithms in the software of the standard digital control system for space rockets at the end of the active section of the rocket flight trajectory. The use of this approach will allow, without making changes to the instrumentation of the standard control system of space rockets, to regulate the range of the actual points of impact of the separating parts by changing the mode of operation of the propulsion systems of space rockets, taking into account the actual stock of propellant components that always remains on board the space rockets. The modifi cation of the flight algorithms of the control system for space rockets, proposed in this article, will significantly narrow the search areas for separating parts of space rockets to a set of seasonal actual dispersion ellipses, as well as signifi cantly reduce the size of land areas regularly withdrawn from nature management during occasional closure of areas where the separating ones fall. parts for the duration of launches of space rockets. This will not only have a favorable effect on reducing the process of searching for and detecting spent stages of space rockets, a significant reduction in the economic costs of searching for, collecting and disposing of separable parts of space rockets, but will also have a positive effect on the economic activity of the constituent entities of the Russian Federation, on the territory of which the fall areas of the separating parts of space rockets are located. Particularly noteworthy is the fact that the proposed modifi cation of the flight algorithms of the space rocket control system is based on information obtained by processing the actual materials of a statistical sample of experimental data available at the 1st State Test Cosmodrome of the Ministry of Defense of the Russian Federation, including both the values of the actual points of impact of the separating parts of space rockets and the value of the actual reserves of rocket fuel components remaining on board space rockets by the time of stage separation, taking into account the seasonal factor, which makes the material of the article interesting not only from a scientific, but also from a practical point of view.
Keywords: launch vehicle, control system, velocity "settings", dispersion ellipses.


DOI: 10.25791/aviakosmos.4.2022.1273

Pp. 03-16.

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