Chugunkov

pp. 1-13

pp. 27-38

pp. 136-150

Equipment operation safety and ecology of the ground complexes is one of the defining factors to choose a component of the rocket fuel. The Liquefied Natural Gas (LNG) having a number of advantages over the rocket kerosene has a specific storage feature that is a possibility of the rollover phenomenon to be arisen. Now the Russian Federation has no sufficient experimental LNG base to simulate different processes, including a rollover. Basic data for modeling are taken from various sources to reveal a doubtful reliability. To confirm data compliance, modeling results have been compared to the experimental data.

Refrigerating of high-boiling rocket fuel is needed to reduce its density and to create cold reserve for equalization of fuel heating during preparing and launching operations. Liquid nitrogen is cheap and ecologically clean product, which can be easily used as a source of cold in rocket fuel preparing systems. Refrigerating systems with liquid nitrogen injection, intermediate heat carrier and heat exchanger are used in temperature preparing of high-boiling rocket fuel components with relatively high freezing point. The operation principle of such system is based on liquid nitrogen injection into heat carrier and refrigerating a rocket fuel component with recuperative heat exchanger. The paper considers simulation techniques and results of such a system performance.

The authors present results of theoretical investigations of heat and mass transfer processes in devices applicable to perform cooling and dehydration of hydrocarbon fuel in the start and technical space center complex. According to the results of the research the authors built a rational scheme of hydrocarbon fuel preparation system with due regard to temperature and moisture content, using storage tanks and storage containers, barbotage machines for preparation of fuel according to moisture content and temperature with use of cold of liquid nitrogen and the cold produced by evaporation of liquid nitrogen of gas nitrogen in the contact heat exchanger. The authors outline advantages of the proposed system over the systems based on the use of vapor-compression refrigeration machines.