Optimal Current Switch ing Control of Electrodynamic Tethers for Fast Deorbit

2014 ◽  
Vol 37 (5) ◽  
pp. 1501-1511 ◽  
Author(s):  
R. Zhong ◽  
Z. H. Zhu
Keyword(s):  
Current Switch ◽  
Optimal Current ◽  
Electrodynamic Tethers

Orbital Maneuvering With Spinning Electrodynamic Tethers

2006 ◽  
Author(s):  
Jerome Pearson ◽  
Eugene Levin ◽  
Joseph A. Carroll ◽  
John C. Oldson
Keyword(s):  
Electrodynamic Tethers

Design of a Universal Reversible Bidirectional Current Switch Based on the Fullerene–Phthalocyanine Supramolecular System

2012 ◽  
Vol 116 (25) ◽  
pp. 6785-6791 ◽  
Author(s):  
Dongdong Qi ◽  
Lijuan Zhang ◽  
Liang Wan ◽  
Luyang Zhao ◽  
Jianzhuang Jiang
Keyword(s):  
Supramolecular System ◽  
Current Switch

scholarly journals A REBCO Persistent-Current Switch (PCS): Test Results and Switch Heater Performance

2017 ◽  
Vol 27 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Philip C. Michael ◽  
Timing Qu ◽  
John Voccio ◽  
Juan Bascunan ◽  
Seungyong Hahn ◽  
...  
Keyword(s):  
Persistent Current ◽  
Test Results ◽  
Current Switch

scholarly journals Design for a Persistent Current Switch Controlled by Alternating Current Magnetic Field

2018 ◽  
Vol 28 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Chao Li ◽  
Jianzhao Geng ◽  
Jamie Gawith ◽  
Boyang Shen ◽  
Xiuchang Zhang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Alternating Current ◽  
Persistent Current ◽  
Current Switch ◽  
Current Magnetic Field

scholarly journals Deployment requirements for deorbiting electrodynamic tether technology

2021 ◽  
Author(s):  
Giulia Sarego ◽  
Lorenzo Olivieri ◽  
Andrea Valmorbida ◽  
Alice Brunello ◽  
Enrico C. Lorenzini ◽  
...  
Keyword(s):  
Lorentz Force ◽  
Electrodynamic Tether ◽  
Operational Life ◽  
Electrodynamic Tethers

AbstractIn the last decades, green deorbiting technologies have begun to be investigated and have raised a great interest in the space community. Among the others, electrodynamic tethers appear to be a promising option. By interacting with the surrounding ionosphere, electrodynamic tethers generate a drag Lorentz force to decrease the orbit altitude of the satellite, causing its re-entry in the atmosphere without using propellant. In this work, the requirements that drive the design of the deployment mechanism proposed for the H2020 Project E.T.PACK—Electrodynamic Tether Technology for Passive Consumable-less Deorbit Kit—are presented and discussed. Additionally, this work presents the synthesis of the reference profiles used by the motor of the deployer to make the tethered system reach the desired final conditions. The result is a strategy for deploying electrodynamic tape-shaped tethers used for deorbiting satellites at the end of their operational life.

scholarly journals Parameters Selection for Electropolishing Process of Products Made of Copper and Its Alloys

2017 ◽  
Vol 62 (3) ◽  
pp. 1443-1447 ◽  
Author(s):  
T. Maciąg ◽  
J. Wieczorek ◽  
B. Węcki
Keyword(s):  
Vital Role ◽  
Surface Geometry ◽  
Electric Industry ◽  
Ferrous Alloys ◽  
Mechanical Working ◽  
Medical Apparatus ◽  
Mechanical Preparation ◽  
Optimal Current ◽  
Surface Microgeometry ◽  
Time Required

AbstractElectropolishing is electrochemical method used in metal working that has a vital role in production of medical apparatus, in food or electric industry. The purpose of this paper is to determine optimal current parameters and time required for conducting electropolishing process from the perspective of changes of surface microgeometry. Furthermore, effect of different types of mechanical working used before electropolishing on final surface state was evaluated by observation in changes of topography. Research was conducted on electrolytic copper and brass. Analysis of surface geometry and its parameters (Ra, Sa) was used as criterion describing efficiency of chemical electropolishing. Results of the experiment allow for current parameter optimization of electrochemical polishing process for selected non-ferrous alloys with preliminary mechanical preparation of the surface.

Sign in / Sign up

Export Citation Format

Share Document