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日本空间和宇航科学研究院正在研制一种可应用在任何运载火箭设计中的,具有折叠延伸喷管的火箭发动饥。此种喷管将首先用在近地轨道运载能力为2吨的M-5火箭的第二级发动机中。 30米长的M-5火箭中的第一级发动机壳体将采用新的高强度钢(HT230)。第一级不采用捆绑助推器。在短时间内燃烧70吨推进剂,产生377吨推力。第二级发动机预计燃烧30吨推进剂,产生141吨推力。为了改善在空气稀薄的高空中的燃烧效率,第
Japan Space and Astronautical Science Institute is developing a rocket launch with folding extension nozzles that can be used in any launch design. The nozzle will first be used in a second-stage engine with an M-5 rocket capable of carrying 2 tons of near-Earth orbit. The first engine housings in the 30-meter M-5 rocket will use the new high-strength steel (HT230). The first level does not use a bundled booster. In a short period of time burning 70 tons of propellant, resulting in 377 tons of thrust. The second stage is expected to burn 30 tons of propellant, resulting in 141 tons of thrust. In order to improve the combustion efficiency in the thin air at high altitude, the first