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Accueil > Séminaires et conférences > Séminaires, soutenances de thèses et HDR précédents > 2011 > Séminaires 2011 > Lundi 26 septembre 2011

Lundi 26 septembre 2011

Lundi 26 septembre 2011 à 16h, Ecole Polytechnique, salle de réunion du CPHT

’A new radio frequency powered hollow cathode micro-thruster’

Rod Boswell and Christine Charles

Space Plasma, Power and Propulsion Laboratory, Research School of Physics and Engineering, The Australian National University, Canberra, ACT, 0200, Australia

rod.boswell anu.edu.au

Plasma formation in a new radio frequency (rf) power hollow cathode micro-thruster, is investigated for rf powers of a few watts to about 50 Watts and argon gas pressures of 0.5 to 5 Torr in the plasma cavity. It is expected that the addition of the plasma to the gas stream will increase the thrust over that generated by the gas stream alone and that this device can be used as a rf micro-thruster for space applications.
Over the past few decades there has been an increasing interest in the development of plasma discharges for electric propulsion in space [2,3]. Propulsion systems vary with the type of missions (thrust and specific impulse requirements, power allocation). For low power allocation, small plasma cavities can still produce dense plasmas which may be used for micro-plasma propulsion. Hollow cathodes typically used as neutralisers in ion gridded engines and Hall effect thrusters have been recently studied as potential micro-thrusters since a variety of discharge modes can be obtained.


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Tutelles : CNRS Ecole Polytechnique Sorbonne Université Université Paris Sud Observatoire de Paris Convention : CEA
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Exploitant du site : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Hébergeur : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Directeur de la publication : Pascal Chabert (Directeur)