Hollow cathodes as a plasma propulsion device
Grubisic, Angelo N. and Gabriel, Stephen B. (2008) Hollow cathodes as a plasma propulsion device. In, Proceedings of the 46th AIAA Aerospace Sciences Meeting and Exhibition. 46th AIAA Aerospace Sciences Meeting and Exhibition Reston, USA, American Institute of Aeronautics and Astronautics.
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Testing of T5 and T6 ion thruster derived hollow cathode thrusters (HCT) at the University of Southampton has demonstrated impressive propulsive performance showing potential for a number of new applications. Ongoing studies also indicate that the hollow cathode thruster concept can be scaled down to a micro-electro-mechanical-systems (MEMs) level device with improving thrust efficiencies. Initial results indicate 3 forms of HCT propulsion device are possible. The first is a high power <1kW device which evokes MPD (magneto-plasma-dynamic) principles to deliver very high specific impulses >1200s with inert propellants such as xenon and argon; essentially a low current (<30A) MPD-HCT thruster. The second form of device operates in an electrothermal mode at lower powers and currents (<100W, <3.2A) and is capable of delivering at least 427s with argon. More recently HCTs have also been proposed in a third form as an on-chip MEMs device for applications at very low power (<5W) with theoretical specific impulse up to 180s for xenon. This paper describes the current findings in HCT technology research and the proposed the possibility of extending this to MEMs scale
|Item Type:||Book Section|
|Keywords:||hollow cathode, thruster, plasma|
|Subjects:||Q Science > QC Physics
T Technology > TL Motor vehicles. Aeronautics. Astronautics
U Military Science > U Military Science (General)
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences > Astronautics
|Date Deposited:||15 Feb 2010|
|Last Modified:||13 Aug 2015 16:05|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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