Mission to Earth–Moon Lagrange Point by a 6U CubeSat: EQUULEUS

Funase, Ryu; Ikari, Satoshi; Miyoshi, Kota; Kawabata, Yusuke; Nakajima, Shigeru; Nomura, Shunichiro; Funabiki, Nobuhiro; Ishikawa, Atsushi; Kakihara, Kota; Matsushita, Sachiko; Takahashi, Ryohei; Yanagida, Kanta; Mori, Daiko; Murata, Yusuke; Shibukawa, Toshihiro; Suzumoto, Ryo; Fujiwara, Masahiro; Tomita, Kento; Aohama, Hiroki; Iiyama, Keidai; Ishiwata, Sho; Kondo, Hayato; Mikuriya, Wataru; Seki, Hidetsugu; Koizumi, Hiroyuki; Asakawa, Jun; Nishii, Keita; Hattori, Akira; Saito, Yuji; Kikuchi, Kosei; Kobayashi, Yuta; Tomiki, Atsushi; Torii, Wataru; Ito, Taichi; Campagnola, Stefano; Ozaki, Naoya; Baresi, Nicola; Yoshikawa, Ichiro; Yoshioka, Kazuo; Kobayashi, Masaki; Hikida, Reina; Arao, Shogo; Abe, Shinsuke; Yanagisawa, Masahisa; Fuse, Ryota; Masuda, Y.; Yano, Hajime; Hirai, Takayuki; Arai, K.; Jitsukawa, Ritsuko; Ishioka, Eigo; Nakano, Haruki; Ikenaga, Toshinori; Hashimoto, Tatsuaki

doi:10.1109/maes.2019.2955577

Cited by 35 publications

(17 citation statements)

References 18 publications

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“…The mission shown in Funase et al 41) was picked as a reference mission for a case study in addition to calculating the propulsion performance. The overview of the mission is that a 6U CubeSat traveled towards an Earth-Moon libration That of a 0.8-mm diameter wire is not shown because its difference from the 0.5-mm wire was less than 0.07%.…”

Section: Feasibility Study Resultsmentioning

confidence: 99%

“…orbit and conducted some scientific missions. 41) A resistojet thruster propelled by water was installed on the spacecraft and was in charge of generating the thrust. 41,42) This part assumes the substitution of the hybrid thruster proposed in this study for the resistojet thruster.…”

Section: Feasibility Study Resultsmentioning

confidence: 99%

“…The first analysis was the firing time to acquire a delta-V of 6 m/s, which was required for the spacecraft's critical maneuver conducted one day after separation from the launch vehicle. 41) The second analysis was the total delta-V. The former is for estimating the thrust and the latter for the specific impulse.…”

Section: Feasibility Study Resultsmentioning

confidence: 99%

“…The case study conducted based on the reference mission revealed that the hybrid thruster has sufficient propulsion performance to bring the required delta-V to small spacecraft in a short time using a restricted propellant mass. 39,41) 14.6 14.6 14.0 Mass of mechanical cable reel, kg 39) 0.6 0.6 -Diameter of Mg wire, mm 0.5 0.8 -Total mass of propellant, kg 42) 1.20…”

Section: Discussionmentioning

confidence: 99%

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Feasibility Study of a Hybrid Thruster using Wire-Shaped Magnesium and Water for Application to Small Spacecraft

Akiyama

Nishii

Mannami

et al. 2021

Trans. Japan Soc. Aero. S Sci.

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High thrust propulsion systems that can be used in small spacecraft are urgently needed to expand the use of small spacecraft. This study proposes a hybrid thruster for small spacecraft using wire-shaped magnesium as a fuel and water as an oxidizer. "Hybrid thruster" means that the in-space propulsion system generates thrust using a chemical reaction between a solid fuel and a vapor oxidizer, such as those utilized for hybrid rockets. Both magnesium and water are very safe, highly available, and very storable. To assess the feasibility of a hybrid thruster, we carried out experiments utilizing magnesium-wire combustion in water vapor at a pressure lower than the atmosphere, and estimated the input power for ignition, ignitability, and the average magnesium mass consumption rate. Then, propulsion performances were calculated using the experimental results, which show there is an input power of 2-3 W, with higher ignitability and a lower average mass consumption rate for thinner magnesium wires. The calculated specific impulse achieved its maximum at 323 s, with a mass mixture ratio of 1.25. At that mass mixture ratio, the calculated thrust using magnesium wires having diameters of 0.5 mm and 0.8 mm was 49.8 mN and 68.5 mN, respectively. Additionally, the applicability of the hybrid thruster was shown through a case study considering an existing deep-space misson.

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Section: Feasibility Study Resultsmentioning

confidence: 99%

Section: Feasibility Study Resultsmentioning

confidence: 99%

Section: Feasibility Study Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Feasibility Study of a Hybrid Thruster using Wire-Shaped Magnesium and Water for Application to Small Spacecraft

Akiyama

Nishii

Mannami

et al. 2021

Trans. Japan Soc. Aero. S Sci.

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“…For the next space station orbiting around the Moon, the Lunar Orbital Platform-Gateway, a number of international contributions for dust measurements are expected that, taking advantage of the long duration and large infrastructure of this platform, can lead to better understanding of the Earth-Moon meteoroid environment. In contrast to the larger space missions, 6U-class (10 cm × 20 cm × 30 cm) deep-space explorer, EQUULEUS, will detect the first dust impact by a CubeSat during the cruise to a libration orbit around the Earth-Moon Lagrangian point L2 (Funase et al 2020). In the innermost region of our Solar System, the Parker Solar Probe instrumentation has already reported impacts by very small dust particles which seem to be consistent with the existence of a dust population on hyperbolic trajectories, i.e.…”

Section: Future Of the Fieldmentioning

confidence: 99%

Meteoroids as One of the Sources for Exosphere Formation on Airless Bodies in the Inner Solar System

et al. 2021

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This manuscript represents a review on progress made over the past decade concerning our understanding of meteoroid bombardment on airless solar system bodies as one of the sources of the formation of their exospheres. Specifically, observations at Mercury by MESSENGER and at the Moon by LADEE, together with progress made in dynamical models of the meteoroid environment in the inner solar system, offer new tools to explore in detail the physical phenomena involved in this complex relationship. This progress is timely given the expected results during the next decade that will be provided by new missions such as DESTINY+, BepiColombo, the Artemis program or the Lunar Gateway.

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Review of research on lunar dust dynamics

Yang

Feng

et al. 2022

Astrophys Space Sci

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Mission to Earth–Moon Lagrange Point by a 6U CubeSat: EQUULEUS

Cited by 35 publications

References 18 publications

Feasibility Study of a Hybrid Thruster using Wire-Shaped Magnesium and Water for Application to Small Spacecraft

Feasibility Study of a Hybrid Thruster using Wire-Shaped Magnesium and Water for Application to Small Spacecraft

Meteoroids as One of the Sources for Exosphere Formation on Airless Bodies in the Inner Solar System

Review of research on lunar dust dynamics

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