Document Type : Scientific extension


Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran


The major purpose of this paper is presentation of the technology development phase (modernization or technology management) in space systems and also the review of technology development in space launch system of propulsion system. To this end, firstly, the technology areas in both propulsion systems and space launch systems and technology development are introduced. In this study, technology development and achievement trend in all propulsion subsystems are common. Propulsion system used the technology of kerosene and Nitric Acid in the first the step. Then the Hydrazine fuel, N2O4, L(O2), Kerosene and finally L(O2) and (H2) are achieved. As a conclusion, a new SLS in space transportation is considered and the reason for technology development is clarified so as to find a reduced cost (in both space launch system technology development approaches) and enhance the performance (thrust chamber low cost concepts and reduction of engine components in Expandable Launch Vehicle (ELV) and thrust chamber enhanced life concepts and reliability improvemments in Reusable Launch Vehicle (RLV)).


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