The High Efficiency Multistage Plasma Thruster HEMPT based Ion Propulsion System for the SmallGEO Satellite

Author(s):  
Norbert Koch ◽  
Stefan Weis ◽  
Martin Schirra ◽  
Alexey Lazurenko ◽  
Benjamin van Reijen ◽  
...  
Author(s):  
Nicolas Bellomo ◽  
Mirko Magarotto ◽  
Marco Manente ◽  
Fabio Trezzolani ◽  
Riccardo Mantellato ◽  
...  

AbstractREGULUS is an Iodine-based electric propulsion system. It has been designed and manufactured at the Italian company Technology for Propulsion and Innovation SpA (T4i). REGULUS integrates the Magnetically Enhanced Plasma Thruster (MEPT) and its subsystems, namely electronics, fluidic, and thermo-structural in a volume of 1.5 U. The mass envelope is 2.5 kg, including propellant. REGULUS targets CubeSat platforms larger than 6 U and CubeSat carriers. A thrust T = 0.60 mN and a specific impulse Isp = 600 s are achieved with an input power of P = 50 W; the nominal total impulse is Itot = 3000 Ns. REGULUS has been integrated on-board of the UniSat-7 satellite and its In-orbit Demonstration (IoD) is currently ongoing. The principal topics addressed in this work are: (i) design of REGULUS, (ii) comparison of the propulsive performance obtained operating the MEPT with different propellants, namely Xenon and Iodine, (iii) qualification and acceptance tests, (iv) plume analysis, (v) the IoD.


Author(s):  
Libero Paolucci ◽  
Emanuele Grasso ◽  
Francesco Grasso ◽  
Niklas König ◽  
Marco Pagliai ◽  
...  

Underwater vehicle propulsion performed by exploiting electrical motor is in general the most flexible solution and it is growing in popularity because of its high efficiency both at high and at low advance speed, quick and simple deployment, low costs, and encumbrance. In the present work, permanent magnet synchronous motors for underwater propulsion are proposed. In particular, advanced sensorless control techniques of permanent magnet synchronous motors permit reduced costs, high reliability, and performances. When dealing with small autonomous underwater vehicle propulsion, such devices are hard to find in the market. Hence, the authors focused the research in the development of a system able to perform a reliable rotational speed and torque sensorless estimation. The design and implementation of a complete solution for underwater propulsion are presented as well as a novel rotor polarity identification technique exploiting a high-frequency injection control. Pool tests for the identification of the performances and of the dynamic parameters of the propulsion system are presented. Finally, the possibility of operating a sensorless estimation of the thrust and torque exerted by the propeller and pool test measurements are presented. These features could be exploited to improve navigation accuracy and involves obvious benefits in terms of cost reduction and reliability of the system.


2020 ◽  
Vol 60 (7) ◽  
pp. e201900199
Author(s):  
Paul Matthias ◽  
Daniel Kahnfeld ◽  
Stefan Kemnitz ◽  
Julia Duras ◽  
Norbert Koch ◽  
...  

Author(s):  
Hans Leiter ◽  
Ralf Kukies ◽  
Rainer Killinger ◽  
Lisa Bonelli ◽  
Simone Scaranzin ◽  
...  

2020 ◽  
Vol 176 ◽  
pp. 476-483 ◽  
Author(s):  
F. Romano ◽  
Y.-A. Chan ◽  
G. Herdrich ◽  
C. Traub ◽  
S. Fasoulas ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document