Results 41 to 50 of about 31,489 (272)

Element-free rope pulley calculations: Advancing deployable skeleton performance optimization

Results in Engineering
Objects in rope-driven multibody systems are controlled via embedded pulleys and ropes, and these systems are widely utilized in large deployable structures, aircraft interception systems, robots, cranes, and other mechanical systems.
Bin Xia, Hui Qiu, Zhuoran Huang, Bindi You, Cheng Wei   +4 more
doaj   +1 more source

Observations of the spatial and temporal structure of field-aligned beam and gyrating ring distributions at the quasi-perpendicular bow shock with Cluster CIS [PDF]

Annales Geophysicae, 2001
During the early orbit phase, the Cluster spacecraft have repeatedly crossed the perpendicular Earth’s bow shock and provided the first multi-spacecraft measurements. We have analyzed data from the Cluster Ion Spectrometry experiment (CIS), which
E. Möbius, H. Kucharek, C. Mouikis, E. Georgescu, L. M. Kistler, M. A. Popecki, M. Scholer, J. M. Bosqued, H. Rème, C. W. Carlson, B. Klecker, A. Korth, G. K. Parks, J. C. Sauvaud, H. Balsiger, M.-B. Bavassano-Cattaneo, I. Dandouras, A. M. DiLellis, L. Eliasson, V. Formisano, T. Horbury, W. Lennartsson, R. Lundin, M. McCarthy, J. P. McFadden, G. Paschmann   +25 more
doaj   +1 more source

On the estimation of the current density in space plasmas: multi versus single-point techniques

, 2017
Thanks to multi-spacecraft mission, it has recently been possible to directly estimate the current density in space plasmas, by using magnetic field time series from four satellites flying in a quasi perfect tetrahedron configuration.
Malara, Francesco, Perri, Silvia, Reda, Antonio, Sorriso-Valvo, Luca, Valentini, Francesco   +4 more
core   +1 more source

Magnetopause reconnection across wide local time [PDF]

Annales Geophysicae, 2011
During April to July 2007 a combination of 10 spacecraft provided simultaneous monitoring of the dayside magnetopause across a wide range of local times.
M. W. Dunlop, M. W. Dunlop, M. W. Dunlop, Q.-H. Zhang, Y. V. Bogdanova, K. J. Trattner, Z. Pu, H. Hasegawa, J. Berchem, M. G. G. T. Taylor, M. Volwerk, J. P. Eastwood, B. Lavraud, C. Shen, J.-K. Shi, J. Wang, D. Constantinescu, A. N. Fazakerley, H. Frey, D. Sibeck, P. Escoubet, J. A. Wild, Z. X. Liu, C. Carr   +23 more
doaj   +1 more source

Multi-Spacecraft Measurement of Turbulence within a Magnetic Reconnection Jet [PDF]

, 2015
The relationship between magnetic reconnection and plasma turbulence is investigated using multipoint in-situ measurements from the Cluster spacecraft within a high-speed reconnection jet in the terrestrial magnetotail.
Chapman, S. C., Hnat, B., Khotyaintsev, Yu. V., Kiyani, K. H., Matthaeus, W. H., Osman, K. T.   +5 more
core   +2 more sources

Dual-loop integration framework for model-based system design and reliability analysis using Bayesian networks

Results in Engineering
Integrating model-based systems engineering (MBSE) and reliability analysis is challenging due to the lack of life-cycle reliability consideration in system design, difficulty in tracking design changes in reliability modeling, and limited quantitative ...
Yunpeng Zhang, Jian Chen
doaj   +1 more source

IMPALAS: Investigation of MagnetoPause Activity using Longitudinally-Aligned Satellites—a mission concept proposed for the ESA M3 2020/2022 launch [PDF]

, 2012
The dayside magnetopause is the primary site of energy transfer from the solar wind into the magnetosphere, and modulates the activity observed within the magnetosphere itself.
Amm, O., Bruno, R., De Keyser, J., Dunlop, M.W., Eastwood, J.P., Fazakerley, A.N., Fontaine, D., Forsyth, C., Hasegawa, H., Hellinger, P., Hercik, D., Jacquey, C., Milan, S., Owen, C.J., Raeder, J., Sibeck, D.G., Stverak, S., Travnicek, P., Walsh, A.P., Wild, James   +19 more
core   +3 more sources

Artificial spacecraft in hybrid simulations of the quasi-parallel Earth's bow shock: analysis of time series versus spatial profiles and a separation strategy for Cluster [PDF]

Annales Geophysicae, 1994
We construct artificial "software" spacecraft consisting of magnetometers and 3D thermal and energetic ion detectors. Four such spacecraft are "flown" through a 1D simulation of a quasi-parallel shock. We analyze the resulting time
J. Giacalone, S. J. Schwartz, D. Burgess
doaj   +1 more source

Revision of empirical electric field modeling in the inner magnetosphere using Cluster data [PDF]

, 2013
Using Cluster data from the Electron Drift (EDI) and the Electric Field and Wave (EFW) instruments, we revise our empirically-based, inner-magnetospheric electric field (UNH-IMEF) model at 22.662 mV/m; K-p\u3c1, 1K(p)\u3c2, 2K(p)\u3c3, 3K(p)\u3c4, 4K(p ...
Khotyaintsev, Y. V., Lindqvist, P. A., Matsui, Hiroshi, Spence, Harlan E.   +3 more
core   +2 more sources

The Cluster Magnetic Field Investigation: overview of in-flight performance and initial results [PDF]

Annales Geophysicae, 2001
The accurate measurement of the magnetic field along the orbits of the four Cluster spacecraft is a primary objective of the mission. The magnetic field is a key constituent of the plasma in and around the magnetosphere, and it plays an active role
A. Balogh, C. M. Carr, M. H. Acuña, M. W. Dunlop, T. J. Beek, P. Brown, K.-H. Fornacon, E. Georgescu, K.-H. Glassmeier, J. Harris, G. Musmann, T. Oddy, K. Schwingenschuh   +12 more
doaj   +1 more source