Proposal of the optimum frequency for microwave rocket launch

• TANIGUCHI Tomohei

  Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo

• TABATA Kuniyoshi

  Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo

• MANABE Ayuto

  Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo

• TAMAGAWA Toshiyuki

  Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo

• KOMURASAKI Kimiya

  Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo

• KOIZUMI Hiroyuki

  Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo

Bibliographic Information

Other Title

• マイクロ波ロケット打ち上げにおける最適な周波数の提案

Abstract

  Microwave rocket has been studied as a first stage rocket. The high-power millimeter-wave oscillator gyrotron, which is necessary for the launch of Microwave rocket, is currently capable of oscillating millimeter-wave between 1 and 1,000 GHz, and in principle Microwave rocket can be realized at any frequency. In this study, we investigated how the launch cost changes when the oscillation frequency is changed. As a result, in the case of the fixed-focus transmission system, the optimum frequency is 28 GHz because the aerodynamic drag loss is dominant when the frequency is too small, while the atmospheric attenuation loss is dominant when the frequency is too large. On the other hand, in the case of the variable-focus transmission system, the optimum frequency is 5.8 GHz, where the atmospheric attenuation loss is the lowest, because the beam spread does not affect the receiving antenna diameter.

Journal

• Space Solar Power Systems

  Space Solar Power Systems 6 (0), 15-21, 2021

  Space Solar Power Systems Society

Keywords

• Microwave Rocket
• Orbit analysis
• Gyrotron frequency
• Millimeter-wave

Details

• CRID: 1390850247501144832
• NII Article ID: 130007996758
• DOI: 10.24662/sspss.6.0_15
• ISSN: 24321060
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed