Automatic Processing of the Information Received from the Space Rocket Onboard Video Control System.

The paper discusses the information processing method developed by the Mis-sion Control Center (AO TSNIImash) specialists, used to process the infor-mation received from the Soyuz space rocket onboard video control system. Specific features of the information being received are presented. Methods of restoring corrupt information are proposed. The results of information pro-cessing during real Soyuz-FG and Soyuz-2 space rocket launches are given.

Numerical simulation of aerodynamic properties of separable elements of space-rocket systems in the LOGOS software package

The work describes simulation results of the aerodynamic properties of split elements of the space-rocket systems in the LOGOS software package: the review of the advanced methods for aerodynamic properties has been carried out, the advantages of the computer simulation when solving such problems were demonstrated, verification and validation computations of the simulation problems for the split elements were performed, the produced results were compared with the reference data from available publications. The analysis of the results confirmed the applicability of the LOGOS software package for computing aerodynamic properties of the split elements.

Calculation of strength, rigidity, and stability of the aircraft fuselage frame made of composite materials

Carbon-carbon composite materials (CCCM) are characterized by high heat resistance and thermostability for which they, in most of their physical and mechanical characteristics, can be attributed to the most promising materials. Approximately 81% of all carbon-carbon composite materials are used for the manufacture of brake rotors for aircraft, 18% – in space rocket technology, and only 1% – for all other areas of application. This study discusses calculations of the strength, rigidity, and stability of a frame made of carbon-carbon composite materials. It is known that the strength of CCCM based on high-strength carbon fibers is higher than the strength of a composite material based on high-modulus carbon fibers obtained at various processing temperatures. The stress-strain behaviour (SSB) of the material is carried out. Among the special properties of CCCM are low porosity, low coefficient of thermal expansion, maintaining a stable structure and properties, as well as product dimensions.

Analysis of the dynamic operating modes of the verticalization system of the universal launch complex for a promising super-heavy ILV

The paper presents the results of the analysis of the dynamic processes occurring at different stages of the operation of the installation unit of the super-heavy-class space rocket complex for one of the options for completing the Yenisei space rocket, intended for both the implementation of the lunar program and deep space exploration. Verticalization and installation of the ILV under consideration on the launch pad is carried out by a lifting and installation unit of an original design. The main feature of this unit is the presence of two tilting axes. The considered type of installation unit has not previously been used in domestic complexes for ILV. Despite some similarities of such a unit with a classic installer with lifting frame, in the course of its operation, specific operating modes arise with increased dynamic loading of the unit structure and the lifted product. The calculations made it possible to propose constructive solutions that ensure a decrease in dynamic loads on a space rocket during verticalization and installation on a launch pad.

Accuracy of measurement of the signal information parameter tracking meter in the aviation and space rocket industry technology against the background of additive and multiplicative interference. The steepness of the discriminatory specifications. Part I

Рассмотрено и проанализировано влияние мультипликативных помех, действующих одновременного с аддитивными помехами, на точность измерения одного информационного параметра следящим измерителем. Проанализирована крутизна дискриминационной характеристики следящего измерителя . The influence of multiplicative interference acting simultaneously with additive interference on the accuracy of measurement of a single information parameter by a tracking meter is considered and analyzed. The steepness of the discrimination characteristic of the tracking meter is analyzed.

HYPOTHESIS ON ONE CAUSE OF TWO SPACE ROCKET ACCIDENTS

The data on two emergency launches of space rockets in 1975 and in 2015 under the manned programs of the USSR and Russia are analyzed. On the base of the data analysis concerning the external manifestation and the course of two emergencies, a hypothesis is proposed about the possibility of their single cause, which is associated with the fl ows of charged particles that overcame the Earth's protective radiation belts and could lead to accidents during the launches of Soyuz and Progress spacecraft.

Accuracy of measuring the frequency and time of arrival of a useful signal in aviation and space-rocket radio systems at presence of additive and multiplicative interference with low level

Произведена оценка влияния флуктуационных стационарных мультипликативных помех, действующих одновременного с аддитивными помехами, на точность измерения неэнергетических параметров информационных сигналов. Показано, что мультипликативная помеха низкого уровня оказывает более сильное влияние на точность измерения времени прихода, чем на точность измерения частоты полезного сигнала. Осуществлена количественная оценка влияния мультипликативной помехи на точность измерения неэнергетических параметров полезного сигнала. The influence of fluctuating stationary multiplicative interference acting simultaneously with additive interference on the accuracy of measurement of non-energy parameters of information signals is estimated. It is shown that low-level multiplicative interference has a stronger effect on the accuracy of the arrival time measurement than on the accuracy of the useful signal frequency measurement. A quantitative assessment of the effect of multiplicative interference on the accuracy of measurement of non-energy parameters of the useful signal is carried out.

Some Aspects of Acoustic Emissions during the Launch of a Space Rocket in Research of Earth by Satellites

<p>Acoustic fields of various types of radiation and power arise during the rocket’s movement in the atmosphere after the launch. One of the most topical studies here is the analysis and assessment of the infrasonic radiation levels and their impact on the health of the nearby settlements population and the spaceport maintenance personnel. Therefore, it is necessary to identify the features and determine the directions of acoustic radiation research based on existing ideas about the generation, propagation, and impact of infrasound.</p><p>The methodology for researching acoustic radiation during rocket movement includes identifying the primary sources of acoustic vibrations. That is vibrations from a working propulsion system, from the vibrating shell of the rocket case, turbulent vortices in the flow around the rocket case. And also the identification of acoustic vibrations secondary sources arising from the primary vibrations reflection from collisions with obstacles, for example, the launch pad surface type.</p><p>It is necessary to develop physical models of acoustic fields, the nature of which depends primarily on the type of acoustic sources.</p><p>These are the following models:</p><ul><li>point radiation (monopoles);</li> <li>analysis of acoustic fields generated in the environment by force acting on a rigid surface and characterized by the Lamb potential;</li> <li>acoustic radiation and fields during vibrations of plates and shells of various shapes, lengths, and areas;</li> <li>acoustic radiation during the movable environment and solid bodies interaction;</li> <li>acoustic radiation at the jets outflow from nozzles;</li> <li>excitation and propagation of acoustic vibrations inside gas and liquid cavities, taking into account the peculiarities of the shells’ structural schemes, the resonances identification;</li> <li>monochromatic and pulsed radiation.</li> </ul><p>The next step is the creation of mathematical models designed to calculate the acoustic field characteristics (analytical methods, the use of Taylor and Fourier series, numerical programming methods). Mathematical dependences will make it possible to analyze the relationship between the acoustic radiation sources energy characteristics and the characteristics of their acoustic fields. It is important to calculate the acoustic radiation amplitude-frequency characteristics.</p><p>Experimental tests, the development of programs, and methods for measuring the acoustic vibration characteristics are important. At the same time, a list of equipment necessary for measuring acoustic characteristics (instruments, circuits, equipment) is created.</p><p>As a result of physical and mathematical analysis of acoustic vibrations sources, it is possible to develop active and passive methods of damping them. As well as giving recommendations for damping acoustic vibrations.</p>