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TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN
Vol. 14 (2016) No. ists30 (ISTS Special Issue: Selected papers from the 30th International Symposium on Space Technology and Science) p. Pb_99-Pb_103

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http://doi.org/10.2322/tastj.14.Pb_99

b) Electric and Advanced Propulsion : Joint session with 34th IEPC
  • Abstracts

This paper proposes a two-stage-to-orbit launch system comprised of a Microwave Rocket 1st stage and a Microwave Thermal Rocket 2nd stage. The air-breathing 1st stage improves payload fraction relative to a single-stage-to-orbit system and carries the 2nd stage above the atmosphere and into range of its beam director. For the 1st stage task, a Microwave Rocket is superior to an unmanned aerial vehicle because it is simpler, faster, and reaches higher altitude at higher speed. In addition, we present a new trajectory that eliminates power beaming at low elevation angles and improves system performance. This combination of factors reduces the propellant needed in the 2nd stage, which in turn increases payload fraction by a remarkable factor of 3 times.

Copyright © 2016 The Japan Society for Aeronautical and Space Sciences

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