Laboratory Experiment of Plasma Flow Around Magnetic Sail

Funaki, Ikkoh; Kojima, Hidenori; Yamakawa, Hiroshi; Nakayama, Yoshinori; Shimizu, Yukio

doi:10.1007/978-1-4020-6055-7_12

Cited by 7 publications

(15 citation statements)

References 9 publications

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“…(5). If the coil current is initiated during the solar wind operation, the impulse, (F t) total , becomes larger than (F t) SWS .…”

Section: Thrust Measurement Of Pure Magnetic Sailmentioning

confidence: 99%

“…The Magnetoplasma Sail (MPS), which pursues a more realistic implementation of the M2P2 concept, is also being investigated in Japan 3,4) . To obtain the thrust characteristics of various kinds of magnetic sails, we have been working on a scale model experiment 5,6) . The development of the experimental setup as well as direct thrust measurements using a Pure Magnetic Sail scale model were reported in a previous paper 7,8,9) .…”

Section: Introductionmentioning

confidence: 99%

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Thrust Measurement of Pure Magnetic Sail

Ueno

Kimura

Ayabe

et al. 2009

Trans. JSASS Space Tech. Japan

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A Pure Magnetic Sail is a deep space propulsion system consisting of a coil mounted on a spacecraft. In order to predict the thrust characteristics of a Pure Magnetic Sail in space, thrust measurement and magnetic field measurement were conducted using a scale model in a laboratory. To simulate the solar wind, a magnetoplasmadynamic arcjet provides a high density (2×10 19 m -3 ) and high velocity (47 km/s) plasma flow that impinges on a 20-turn 25-mm-radius coil simulating a Pure Magnetic Sail. When the magnetic cavity size of the scale model (L) is increased from 0.12 to 0.17 m, the thrust increases from 0.47 to 0.92 N. Scaling up, this experiment corresponds to a 300-km diameter Pure Magnetic Sail in space. The thrust also depends on the coil tilt angle, which is the angle between the direction of the solar wind flow and the coil axis. The maximum thrust of 1.5 N is obtained for a tilt angle of 90 degrees.

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“…(5). If the coil current is initiated during the solar wind operation, the impulse, (F t) total , becomes larger than (F t) SWS .…”

Section: Thrust Measurement Of Pure Magnetic Sailmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thrust Measurement of Pure Magnetic Sail

Ueno

Kimura

Ayabe

et al. 2009

Trans. JSASS Space Tech. Japan

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show abstract

“…The fundamental physics of the drag force generation in the magnetic plasma deorbit is supposed to be similar to that of magnetic sails [4]. In the research of magnetic sails, Funaki et al proposed an analytical model for the prediction of the plasma drag force as follows [5]:…”

Section: Introductionmentioning

confidence: 99%

Particle Simulation of Plasma Drag Force Generation in the Magnetic Plasma Deorbit

Kawashima¹,

Bak²,

Matsuzawa³

et al. 2018

Journal of Spacecraft and Rockets

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The magnetic plasma deorbit method has been proposed for micro and nanosatellites in the low earth orbit (LEO). The magnetic plasma deorbit utilizes the plasma drag force generated by the interaction between space plasma and the magnetic field surrounding magnetic torquers (MTQs). In this study, the plasma drag force generated by the magnetic plasma deorbit method is estimated by using a plasma flow simulation based on the fully kinetic model. The dependences of the plasma drag force on the MTQ angle, atmospheric plasma density, and MTQ magnetic moment are investigated. The simulation results show that the structures of the bow shock and magnetosphere are formed in the vicinity of the MTQs. The predicted plasma drag force is 105.2 nN for an MTQ of 10 A m 2 when the MTQ magnetic moment is parallel to the satellite velocity direction. The plasma drag force shows a strong dependence on the magnetic moment angle. In addition, the plasma drag force is proportional to the atmospheric plasma density and the MTQ magnetic moment. Steady drag force generation in the magnetic plasma deorbit is validated, and the sensitivities of the drag force to the relevant parameters are elucidated.

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“…The thrust production mechanism is numerically verified by Nishida 2) and the thrust characteristics for magnetospheric size are also numerically suggested by Fujita 3) . We have been conducted a laboratory experimental simulation of magnetic sail 4,5,6) , which is basis for the plasma sails is discussed in this paper. Our previous studies of the scale model experiment verified thrust generation and the thrust characteristics only in the case that the coil-dipole direction was perpendicular to the solar wind flow 4,5,6) .…”

Section: Introductionmentioning

confidence: 99%

“…We have been conducted a laboratory experimental simulation of magnetic sail 4,5,6) , which is basis for the plasma sails is discussed in this paper. Our previous studies of the scale model experiment verified thrust generation and the thrust characteristics only in the case that the coil-dipole direction was perpendicular to the solar wind flow 4,5,6) . Therefore, this paper focuses on thrust characteristics of magsail for various tilt angles in relatively large scale magnetic bubble (magnetosphere).…”

Section: Introductionmentioning

confidence: 99%

Thrust Measurement of Magnetic Sail for Various Tilt Angles

Ueno

Oshio

Funaki

et al. 2012

AEROSPACE TECHNOLOGY JAPAN

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Magnetic Sail, which generates thrust by utilizing the interaction between the artificial magnetic field and the solar wind plasma stream, is next generation propulsion for deep space exploration. In this study, thrust of Magnetic Sail scale model, which correspond to 10 N-class Magnetic Sail in space, for various tilt angles were measured with the parallelogram-pendulum thrust stand. The magnetospheric size L=0.1 m (60 Am 2 of magnetic moment) of Magnetic Sail was demonstrated and measured thrust for tilt angle 0 degrees (dipole-moment perpendicular to the plasma flow) was about 1.2 N which correspond to 10 N-class Magnetic Sail in space. Thrust increase with increasing of tilt angles and was about 1.5 times as large as that of 0 degrees case in the case of 90 degrees.

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Laboratory Experiment of Plasma Flow Around Magnetic Sail

Cited by 7 publications

References 9 publications

Thrust Measurement of Pure Magnetic Sail

Thrust Measurement of Pure Magnetic Sail

Particle Simulation of Plasma Drag Force Generation in the Magnetic Plasma Deorbit

Thrust Measurement of Magnetic Sail for Various Tilt Angles

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