Home > Knowledge Base Authors: David Krejci, Alexander Reissner, Bernhard Seifert, David Jelem, Thomas Hörbe, Florin Plesescu, Pete Friedhoff, Steve Lai Published On: May-June 2018 Event: Demonstration of the IFM Nano FEEP Thruster in Low Earth Orbit, 4S Symposium 2018, 56, Sorrento, Italy Download PDF Abstract The IFM Nano Thruster is a variable specific impulse electrostatic thruster based on Field Emission Electric Propulsion (FEEP), in which a liquid propellant is electrostatically extracted and accelerated to high exhaust velocity. The core element of this propulsion technology is a passively fed, porous ion emitter consisting of 28 sharp emitter tips. This emitter technology has been developed and qualified over decades at FOTEC and the Austrian Institute of Technology, and has recently been adapted for the use as main propulsion system in Nano- and Small-satellites. The resulting IFM Nano Thruster occupies approximately 0.8 U and can be operated between 10 and 40W, resulting in thrust of up to 0.35mN. The thruster can be operated at specific impulse levels between 2000s and 6000s, adapting to mission needs as well as power availability, allowing for significant throttling capability between a couple of μN and 0.5mN. Due to the high specific impulse and high propellant density, the thruster can produce total impulses between 5000Ns and beyond 12000Ns when operated at specific impulses at 2000s and 5000s respectively. The first IFM Nano Thruster has been successfully integrated into a commercial 3U CubeSat in 2017 after undergoing environmental testing, and was launched in January 2018 for a first in-orbit demonstration (IOD). This IOD represents the first instance of a liquid metal FEEP thruster to be operated in space as a primary propulsion system. This paper will present the FEEP thruster principle and experimental characterization, including the first in-orbit test results. DOWNLOAD PDF Thank you for your interest in ENPULSION’s products and services! As a global market leader in electric propulsion for nano- and microsatellites, we offer you a broad range of fully integrated electric propulsion systems, as well as simulator and emulator products, and support and services to guide you from first conceptual steps to spacecraft design, integration, launch-preparation, as well as commissioning and operations, all the way to end-of life de-orbiting of your spacecraft – our expert teams are always at your side. Exclusive ENPULSION data-room If you are interested to gain access to the next layer of technical information and in-depth knowledge of our products and technology, please contact us. In the ENPULSION data-room you can find product-specific user manuals, in-depth technical guides and applicable documents, containing valuable information on handling and shipping requirements, as well as everything you need to know to get the best performance and utility out of your ENPULSION products.
