Electromechanical coupled dynamics of rails for electromagnetic launcher

2011 ◽  
Vol 42 (3) ◽  
pp. 369-389 ◽  
Author(s):  
Yanbo Geng
Keyword(s):  
Coupled Dynamics ◽  
Electromagnetic Launcher ◽  
Electromechanical Coupled

scholarly journals Free Vibration for an Electromagnetic Harmonic Movable Tooth Drive System

2015 ◽  
Vol 9 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Yongli Liang ◽  
Lizhong Xu
Keyword(s):  
Natural Frequencies ◽  
Coupled System ◽  
Drive System ◽  
Vibration Modes ◽  
Electrical Parameters ◽  
Static Displacement ◽  
Coil Current ◽  
Coupled Dynamics ◽  
Flexible Ring ◽  
Electromechanical Coupled

The authors proposed an electromagnetic harmonic movable tooth drive system which is an electromechanical coupled system where the coupled dynamics controls its overall operating behavior. However, the coupled dynamics of such a system was not found in the literature. In this paper, an electromechanical coupled dynamics equation of the flexible ring subjected to electromagnetic force is presented. Using the equation, the natural frequencies and vibration modes of the flexible ring are investigated. The results show that the natural frequency of the drive system is affected by mechanical and electrical parameters among which, the coil current, the average static displacement of the flexible ring and the air gap have more obvious influence on the natural frequencies. The results are useful for the design and further study of the dynamics performance for the drive system.

Electromagnetic-launch-based method for cost-efficient space debris removal

2020 ◽  
Vol 29 (1) ◽  
pp. 94-106
Author(s):  
Chongyuan Hou ◽  
Yuan Yang ◽  
Yikang Yang ◽  
Kaizhong Yang ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Space Debris ◽  
Orbit Space ◽  
Low Earth Orbit ◽  
Research Progress ◽  
Area Of Interest ◽  
Electromagnetic Launch ◽  
Debris Removal ◽  
Significant Research ◽  
Electromagnetic Launcher ◽  
Cost Efficient

AbstractThe increase in space debris orbiting Earth is a critical problem for future space missions. Space debris removal has thus become an area of interest, and significant research progress is being made in this field. However, the exorbitant cost of space debris removal missions is a major concern for commercial space companies. We therefore propose the debris removal using electromagnetic launcher (DREL) system, a ground-based electromagnetic launch system (railgun), for space debris removal missions. The DREL system has three components: a ground-based electromagnetic launcher (GEML), suborbital vehicle (SOV), and mass of micrometer-scale dust (MSD) particles. The average cost of removing a piece of low-earth orbit space debris using DREL was found to be approximately USD 160,000. The DREL method is thus shown to be economical; the total cost to remove more than 2,000 pieces of debris in a cluster was only approximately USD 400 million, compared to the millions of dollars required to remove just one or two pieces of debris using a conventional space debris removal mission. By using DREL, the cost of entering space is negligible, thereby enabling countries to remove their space debris in an affordable manner.

scholarly journals Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria

2021 ◽  
Author(s):  
Martijn Hermans ◽  
Marina Astudillo Pascual ◽  
Thilo Behrends ◽  
Wytze K. Lenstra ◽  
Daniel J. Conley ◽  
...  
Keyword(s):  
Coastal Sediments ◽  
Coupled Dynamics ◽  
Iron Manganese

scholarly journals Modeling the coupled dynamics of stream metabolism and microbial biomass

2020 ◽  
Vol 65 (7) ◽  
pp. 1573-1593 ◽  
Author(s):  
Pier Luigi Segatto ◽  
Tom J. Battin ◽  
Enrico Bertuzzo
Keyword(s):  
Microbial Biomass ◽  
Stream Metabolism ◽  
Coupled Dynamics
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