Abstract. A classification of small spacecraft according to mass criterion is suggested. Domestic and foreign prototypes and analogs of small spacecraft launching systems are considered, their characteristics are analyzed. Small spacecraft launching system based on research rocket complex MR-30 is proposed. The research rocket complex MR-30 includes newly-developed research meteorological rocket MN-300, the flight level of the rocket being about 300 km. Scientific, technical and economic justifications and offers on modernization of a research rocket complex for its use for problems of small spacecraft launching into low orbits are provided. Requirements to a universal platform of the staff payload of the research rocket in view of minimization of technical means of the onboard equipment of small spacecraft for realization of research and local problems from space locate are substantiated. A plan of modernization of the standard block of MN-300 rocket equipment to use it as a platform for small spacecraft launching at minimal cost is developed. The mass characteristics and dimensions of the rocket and the platform for small spacecraft arrangement are presented. The scheme of rocket experiment for small spacecraft launching to a low orbit by means of the research rocket complex is presented.

Keywords: research rocket complex, research meteorological rocket, launching system, small spacecraft, mass of the payload, launching into low orbit

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