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Astrodynamics 2020, 4(3): 233-248 https://doi.org/10.1007/s42064-019-0067-8
Research Article | Issue | Published: 26 October 2019

Solar power sail mission of OKEANOS

Show Author's Information Osamu Mori1( ),  Jun Matsumoto1,  Toshihiro Chujo2,  Masanori Matsushita1,  Hideki Kato1,  Takanao Saiki1,  Yuichi Tsuda1,  Jun’ichiro Kawaguchi1,4,  Fuyuto Terui1,  Yuya Mimasu1,  Go Ono1,  Naoko Ogawa1,  Yuki Takao3,  Yuki Kubo3,  Kaoru Ohashi4,  Ahmed Kiyoshi Sugihara1,  Tatsuaki Okada1,  Takahiro Iwata1,  Hajime Yano1
Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
Tokyo Institute of Technology, Tokyo 152-8550, Japan
The University of Tokyo, Tokyo 113-8654, Japan
Patchedconics, LLC, Sagamihara 252-5210, Japan
Keywords:
solar power sail, OKEANOS, Trojan asteroid, landing, in-situ analysis, outer solar system
Cite this article:
Mori O, Matsumoto J, Chujo T, et al. Solar power sail mission of OKEANOS. Astrodynamics, 2020, 4(3): 233-248. https://doi.org/10.1007/s42064-019-0067-8
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Abstract Full text About this article

The solar power sail is an original Japanese concept in which electric power is generated by thin-film solar cells attached on the solar sail membrane. Japan Aerospace Exploration Agency (JAXA) successfully demonstrated the world’s first solar power sail technology through IKAROS (Interplanetary Kite-craft Accelerated by Radiation of the Sun) mission in 2010. IKAROS demonstrated photon propulsion and power generation using thin-film solar cells during its interplanetary cruise. Scaled up, solar power sails can generate enough power to drive high specific impulse ion thrusters in the outer planetary region. With this concept, we propose a landing or sample return mission to directly explore a Jupiter Trojan asteroid using solar power sail-craft OKEANOS (Oversize Kite-craft for Exploration and AstroNautics in the Outer Solar System). After rendezvousing with a Trojan asteroid, a lander separates from OKEANOS to collect samples, and perform in-situ analyses in three proposed mission sequences, including sending samples back to Earth. This paper proposes a system design for OKEANOS and includes analyses of the latest mission.


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Solar power sail mission of OKEANOS

Show Author's information Osamu Mori1( ), Jun Matsumoto1, Toshihiro Chujo2, Masanori Matsushita1, Hideki Kato1, Takanao Saiki1, Yuichi Tsuda1, Jun’ichiro Kawaguchi1,4, Fuyuto Terui1, Yuya Mimasu1, Go Ono1, Naoko Ogawa1, Yuki Takao3, Yuki Kubo3, Kaoru Ohashi4, Ahmed Kiyoshi Sugihara1, Tatsuaki Okada1, Takahiro Iwata1, Hajime Yano1
Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
Tokyo Institute of Technology, Tokyo 152-8550, Japan
The University of Tokyo, Tokyo 113-8654, Japan
Patchedconics, LLC, Sagamihara 252-5210, Japan

Abstract

The solar power sail is an original Japanese concept in which electric power is generated by thin-film solar cells attached on the solar sail membrane. Japan Aerospace Exploration Agency (JAXA) successfully demonstrated the world’s first solar power sail technology through IKAROS (Interplanetary Kite-craft Accelerated by Radiation of the Sun) mission in 2010. IKAROS demonstrated photon propulsion and power generation using thin-film solar cells during its interplanetary cruise. Scaled up, solar power sails can generate enough power to drive high specific impulse ion thrusters in the outer planetary region. With this concept, we propose a landing or sample return mission to directly explore a Jupiter Trojan asteroid using solar power sail-craft OKEANOS (Oversize Kite-craft for Exploration and AstroNautics in the Outer Solar System). After rendezvousing with a Trojan asteroid, a lander separates from OKEANOS to collect samples, and perform in-situ analyses in three proposed mission sequences, including sending samples back to Earth. This paper proposes a system design for OKEANOS and includes analyses of the latest mission.

Keywords: solar power sail, OKEANOS, Trojan asteroid, landing, in-situ analysis, outer solar system

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Publication history
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Publication history

Received: 17 March 2019
Accepted: 13 September 2019
Published: 26 October 2019
Issue date: September 2020

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© Tsinghua University Press 2019
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