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M. Tajmar, D. Bock, F. Nürmberger, A. Hock, M. Kössling
The institute of aerospace engineering at TU Dresden is developing a number of electric propulsion thrusters in the low power range for micro and small satellites as well as for precision pointing science applications. The first concept is a FEEP thruster called NanoFEEP using gallium as propellant that is small enough to be integrated into a CubeSat enabling formation flying and orbit control on a widely available small satellite platform. Also the power requirement is so small that up to 8 thrusters can be fired simultaneously enabling full 3-axis attitude and orbit control with maximum thrusts in the range up to 10 [micro]N. The second concept uses gas as propellant using a porous MEMS silicon chip with carbon nanotubes for field ionization. The thruster requires only a single power supply with a few hundred volts DC and no magnetic field. A first prototype of the MEMS ion thruster demonstrated a thrust level of 150 [micro]N with a chip size of only 25 mm. Due to ist carbon nanotube array it can work also with AC voltages and acts as ist own neutralizer. In order to complement our education program on electric propulsion, a low power hall thruster together with a cathode is also currently under development by students aiming at the 50-150 W range. All thrusters can be tested on a new torsion thrust balance that promises thrust resolutions down to the Nano-Newton range. In addition to classical electric propulsion, we are also working on very advanced propellantless propulsion concepts which are briefly introduced.
Deutscher Luft- und Raumfahrtkongress 2015, Rostock
Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2015
21,0 x 29,7 cm, 10 Seiten
Stichworte zum Inhalt:
Elektrische Antriebe, Kleinsatelliten