نتایج جستجو برای: liquid propellant
تعداد نتایج: 219239 فیلتر نتایج به سال:
The design of cryogenic propellant tanks that are used for storing liquid hydrogen and liquid oxygen due to the low boiling temperature has many differences compared with the others. In this paper, the most important insulated systems in cryogenic storage tanks, such as vacuum insulated, vacuum insulated with powder, vacuum insulated with radiation shields, multilayer super insulation an...
1 Leading Researcher, MCT, Inc., NASA Ames Research Center, Moffett Field, CA, 94035, USA. 2 Associate Scientist, Intelligent Systems Division, NASA Ames Research Center, Moffett Field, CA 94035, USA. AIAA Member. 3 Associate Professor, Department of Mathematical Sciences, New Jersey Institute of Technology, Newark, NJ, 07102, USA. 4 Professor, Physics Department, South Dakota School of Mines a...
T study demonstrates the advantages of using a real coded genetic algorithm (GA) for aerospace engineering design applications. The GA developed for this study runs steady state, meaning that after every function evaluation the worst performer is determined and that worst performer is then thrown out and replaced by a new member that has been evaluated. The new member is produced by mating two ...
BACKGROUND Current pressurised metered dose asthma inhaler (pMDI) propellants are not inert pharmacologically as were previous chlorofluorocarbons, have smooth muscle relaxant' partial pressure effects in the lungs and inhaled hydrofluoroalkane 134a (norflurane) has anaesthetic effects. Volumes of propellant gas per actuation have never been measured. METHODS In-vitro studies measured gas vol...
The purpose of this paper is to review the application and the status of mono propellant Nitrous oxide (N2O) as a high energetic material in the space industry. Therefore Nitrous oxide is introduced and its usage in propulsion systems is discussed. The results suggest that this compound lies in the development of the miniaturization concept of space propulsion systems. Because of this combinati...
The supercharger is intended for heating a fluid (gaseous helium or gaseous nitrogen) used the pressurization of fuel tanks oxidizer and propellant rocket engine. heated with generator gas downstream turbine. A increased channel surface roughness was made according to an additive technology. High one features producing parts by selective laser melting. article presents method calculating heat t...
Liquid hydrogen is used as a powerful and efficient propellant in spacecraft industries. This paper first presents the main principles of hydrogen liquefaction. Then, different methods for hydrogen liquefaction, including four general categories: precooled Linde-Hampson process, Claude process, helium-precooled Claude process and liquefaction by small cryo-coolers, are expressed along with thei...
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