Proceedings ArticleDOI
Development of a hybrid (MPD plus thermal) arcjet engine with an applied magnetic field
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Work carried out by the JPL on several applied field MPD (magnetoplasmasynamic) or hybrid engines, both radiation cooled and liquid cooled, is described in this article.Abstract:
Work carried out by the JPL on several applied field MPD (magnetoplasmasynamic) or hybrid engines, both radiation cooled and liquid cooled, is described. A radiation cooled device was successfully life tested for 554 hrs with ammonia as the propellant. While the electrode erosion was moderate, the boron nitride insulator was badly eroded. Hydrogen and lithium were the other propellants used in these devices. In the case of lithium, a radiation cooled engine had an efficiency of 70 percent at about 5500 sec.read more
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Proceedings ArticleDOI
Applied-field magnetoplasmadynamic engine developments
TL;DR: In this article, an experimental and analytical effort to further the development of an MPD thruster was described and the latest results were presented and discussed, in particular, efforts to measure, simultaneously, the thrust developed by the archead and by the electromagnet, and to evaluate the effect of a diffuser on vacuum tank back pressure.
Proceedings ArticleDOI
A brief review of JPL's electric propulsion technology activities
John W. Barnett,Ann Chopra,William D. Deininger,Charles E. Garner,Thomas J. Pivirotto,Joel C. Sercel +5 more
TL;DR: In this paper, the near-term objectives and recent technological progress of JPL's electric propulsion program are discussed, with particular attention given to accomplishments for ion, magnetoplasmadynamic (MPD), electron-cyclotron resonance (ECR), and arcjet thrusters.
References
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Journal ArticleDOI
Plasmaströmungen in Lichtbögen infolge eigenmagnetischer Kompression
TL;DR: In this article, the kathodischen Stromung in der Kathodenbrennfleck is described, e.g., in terms of the Ruckstos (≈ 1 pond) auf die Kathode.
Proceedings ArticleDOI
Performance and lifetime assessment of MPD arc thruster technology
TL;DR: A summary of performance and lifetime characteristics of pulsed and steady-state magnetoplasmadynamic (MPD) thrusters is presented in this article, where the technical focus is on cargo vehicle propulsion for exploration-class missions to the Moon and Mars.
Journal ArticleDOI
Cathode Erosion Studies on MPD Thrusters
TL;DR: In this article, the results of a cathode erosion study on an MPD arc thruster under pulsed and steady-state operating modes were presented, and an explanation of the cathode attachment mechanisms for both operating modes was given.
Journal ArticleDOI
Effect of background pressure on magnetoplasmadynamic thruster operation
D. J. Connolly,R. J. Sovie +1 more
TL;DR: Background pressure and magnetic field shape effect on MPD thrustor performance, testing radiation cooled thrustors.
Proceedings ArticleDOI
The design and operating characteristics of a 30-kW thermal arcjet engine for space propulsion
TL;DR: In this article, the design features of a radiation-cooled, 30-kW thermal arcjet thruster have been investigated for the Space-Based Radar (SBR) mission.
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