Vol 9, No 2 (2010): Special Issue

The paper presents the results of determination angular rate and quasistatic microaccelerations on board the spacecraft’s Foton-11 and Foton-12.

Major task of orbital tether system motion simulation (OTS) taking into account its parameters is represented in the article.

Using the scheme of radiant heat transfer between the unbounded plane and rows of tubes in parallel planes, considered heat transfer inkjet linen cloths coolant moving in the longitudinal direction of die refrigerator drip emitters and ending in space. A design scheme of temperature changes during cooling jet linen cloths in space. We calculated the formula for determining the current and the average temperature along the length of linen cloths, as well as the length of linen cloths depending on the heat load from the Erase spacecraft. Using the proposed simple model of heat transfer inkjet linen cloths refrigerator drip emitters and space led to the practical coincidence of our calculations the number of drop of heat into outer space droplets refrigerator and the average temperature along the length of the jet with the results obtained using a complex model of heat transfer drop linen cloths Konyukhov G.V.

The given work contains some results connected with processing of measurements and  definition of rotary movement of last four SC "Foton" series and calculation of onboard quasi-static micro accelerations. Special methods are developed for the decision of these problems as well as software for after-flight processing of received data and measurements.

In the article is represented the brief survey of contemporary state and ways of the development of radar space systems of remote sensing of the Earth, their basic fields of application are discussed. The contemporary methods of radar surveillance are illustrated in the concrete examples, are analyzed the scientific problems, which limit the development of this area of space technology. Staging character in the development of satellites of radar surveillance from single satellite to the development of the net multifunctional systems of navigation and radiophysics monitoring of near-earth space is proposed.

During operation of Strela LV the levels of acoustic loads, affecting the LV head section and payload accommodated inside, have been experimentally determined when launching LV out of the  silo and  in the phase of maximum dynamic pressure,.

The results of acoustic loads measurements were used for generation and verification of Strela LV head sections models.

These models became the basis of procedure for calculation of the acoustic field affecting a spacecraft accommodated under the LV fairing.

The report studies the problems of simulating the spacecraft structure reaction to acoustic loads.

Comparative analysis has been carried out for the spacecraft reaction to acoustic and vibration loads at the levels corresponding to «Strela LV user manual». Based upon the results of comparative analysis the conclusion was made that the spacecraft structure reaction to vibration loads prevails over its reaction to acoustic loads.

The given work describes methodical aspects, the results of experimental and computer research connected with an estimation of target indicators of efficiency of space vehicles "Foton-M" No2 and No3. The structure of software models of scientific equipment and some results of a choice of design parameters of algorithms of these models are shown.

In the article it is considered the design shape and the basic design characteristics of the unified platform of a small student's satellite "AIST" in which the basis principles of modular technologies and methods of structural designing are put.

The paper covers a problem of independent motion control of light kick-stage mass-center. We propose a control algorithm enabling to implement on-board an in-flight correction of nominal control program by means of satellite  navigation system data received during non-powered flight intervals.

This article contains signal detection algorithms based on statistical characteristics application of received signal.

The particular case of application of a method of the least squares is considered. The analysis of conformity of received before without application of the method of the least squares formulas for heat transfer factors at movement of fluids in pipes to the best decisions is carried out. New analytical dependences for definition of the specified factors of heat transfer are offered

In the article there are results of a full-scale experiment on KA «Mozhaets-4» presented of an assessment of space factors influence on working efficiency of microchip static operation memory 537PУ16, which are used in the onboard computer system RAM «Salut-5M». Based on experiment results empirical relationships are presented in an appropriate model for assessment and forecasting for working efficiency of onboard computer system KA for monitoring, which is functioning on sun-synchronous orbit.

Programming of control logic and algorithms for onboard control systems is analyzed in the article. Since the applicable software engineering methods haven’t met the modern CAD requirements in most cases, the authors discuss formalized input and output data representation as a way out for effective infotainment of programming. Efficient information support of control logic and algorithms programming makes it possible to reduce design time, use computer aids for documenting, displaying and storage of design documentation, that results in improvement of satellite performance.