Results 31 to 40 of about 1,653 (191)

Cusp observations during a sequence of fast IMF B_Z reversals [PDF]

Annales Geophysicae, 2009
In recent years, a large number of papers have reported the response of the cusp to solar wind variations under conditions of northward or southward Interplanetary Magnetic Field (IMF) Z-component (BZ).
H. T. Cai, H. T. Cai, I. W. McCrea, M. W. Dunlop, J. A. Davies, Y. V. Bogdanova, F. Pitout, S. E. Milan, M. Lockwood, S. Y. Ma   +9 more
doaj   +1 more source

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

Justification of the choice of the method and criterion of clustering for intelligent analysis in flight control spacecraft

Космические аппараты и технологии, 2020
The article examines the methods of intelligent analysis of telemetric information of spacecraft. The current state and main shortcomings of the control process during the spacecraft flight control are briefly given.
S. V. Soloviev
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

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

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

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

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

Spacecraft potential control for Double Star [PDF]

Annales Geophysicae, 2005
The spacecraft potential of Double Star TC-1 is positive in large parts of the orbits due to the photo-effect from solar EUV irradiation. These positive potentials typically disturb low energy plasma measurements on board. The potential can be reduced,
K. Torkar, H. Arends, W. Baumjohann, C. P. Escoubet, A. Fazakerley, M. Fehringer, G. Fremuth, H. Jeszenszky, G. Laky, B. T. Narheim, W. Riedler, F. Rüdenauer, W. Steiger, K. Svenes, H. Zhao   +14 more
doaj   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source