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Emerging roles for the nucleolus in development and stem cells.

Development
Leeke BJ, Staffhorst I, Percharde M.
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On the control of Tethered Satellite Systems

32nd Structures, Structural Dynamics, and Materials Conference, 1991
Abstract A mathematical model is proposed for studying the dynamics of the Tethered Satellite System (TSS) consisting of a plate-type space station from which a tether supported subsatellite is deployed or retrieved. The rigid body dynamics of the tether, subsatellite and space station are analyzed accounting for the mass of the tether as well as a ...
V.J. Modi, P.K. Lakshmanan, A.K. Misra
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An Efficient Model of Tethers for Tethered Satellite Systems

Advances in Astronautics Science and Technology, 2018
This paper concerns about modeling of tethered satellites systems (TSS). In this paper, tethers of TSS are modeled as chains of elastic rods connected by rigid joints. A group of spatial vectors are used to describe displacement, orientation and deformation of the rods, which can avoid the coupling of trigonometric functions of Euler angles.
Ma Shuguang, Wang Tianshu
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Tether satellite system collision study

Acta Astronautica, 1999
A study was performed to determine the probability of collision with resident space objects and untrackable debris for the tether component of the Tethered Satellite System (TSS) after it broke away from the Space Shuttle orbiter (mission STS-75) in February 1996.
V.A. Chobotov, D.L. Mains
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Preliminary orbit determination of a tethered satellite

Applied Mathematics and Computation, 2007
Interest in the deployment of tethered satellites has led to a need for preliminary orbit determination methods which are capable of distinguishing tethered satellites from untethered ones. Classical preliminary orbit determination methods, which are used for Keplerian satellites, generally require two or more position vectors along with their ...
C. Qualls, David A. Cicci
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Three-dimensional vibrations of tethered satellite systems

Journal of Guidance, Control, and Dynamics, 1991
The three-dimensional free vibrations of an orbiter-towed tethered satellite system with nominally vertical tether during stationkeeping phase are studied analytically. The tether is modeled as an elastic continuum with mass and the orbiter and the subsatellite as two concentrated masses.
PASCA M, PIGNATARO M, LUONGO, Angelo
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Tethered Satellite Systems

Journal of Spacecraft and Rockets, 1989
T following three papers on tethered satellite systems grew out of session 110 of the AIAA 26th Aerospace Sciences Meeting, held in Reno, Nevada, in January 1988. Interest in such systems, which goes back several years, has been evinced by NASA, various Italian space research activities, and, most recently, by the Japanese. While no tethered spacecraft
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Current collection by the tethered satellite

25th Anniversary, IEEE Conference Record - Abstracts. 1998 IEEE International Conference on Plasma Science (Cat. No.98CH36221), 1998
Summary form only given, as follows. Both measurements and models have revealed that the tethered satellite in the TSS-1R mission collected a large current, 2-3 times in excess of the current predicted by the theory of Parker and Murphy. Using 3-D particle-in-cell simulations the origin of the current enhancement is analyzed in detail. Flow of currents
W. Leung, N. Singh
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Extension of tethered satellites in the atmosphere

Acta Astronautica, 2003
An important application of tethered satellites isatmospheric studies by extension of a subsatellite into the atmosphere through tether while the parent spacecraft *ies at an altitude high enough so that the deleterious e+ects of the atmosphere on it are inconsequential. The key issue in the operation is the swift extension of the tether.
Pradeep, S, Kumar, K
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Constrained Motion of Tethered Satellites

Volume 6: 5th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C, 2005
The orbital motion of tethered satellites is a highly complex nonlinear problem. This investigation sets out to formulate a new method that significantly simplifies the dynamic analysis of tethered satellite systems. This is accomplished using the fundamental equation for constrained dynamic systems, which was formulated by Udwadia and Kalaba.
Aaron D. Schutte, Brian A. Dooley
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