Results 71 to 80 of about 69,393 (296)

Secular evolution of a satellite by tidal effect. Application to Triton

, 2009
Some of the satellites in the Solar System, including the Moon, appear to have been captured from heliocentric orbits at some point in their past, and then have evolved to the present configurations.
Alexandre C. M. Correia, Chyba, Correia, Cruikshank, Hut, Jacobson, Laplace, Mignard, Néron de Surgy, Smart, Stern, Tremaine, Tsurutani, Vokrouhlický, Ward   +14 more
core   +1 more source

Drag-free satellite control [PDF]

A drag-free satellite cancels the effect of external disturbances. Although the forces may be small, a satellite is disturbed by residual air drag, radiation pressure, micrometeorite impact, and other small forces that act on its surface disturbing its ...
Debra, Daniel B.
core   +1 more source

Electrification of the proof mass of a drag-free or accelerometric satellite [PDF]

, 1977
The exploitation of the data provided by the Cactus accelerometer, which makes up the payload of the D5B Castor Satellite of CNES confirmed the existence of an electric current charging the proof mass under the influence of the magnetospheric protons ...
Juillert, R., Philippon, J. P.
core   +1 more source

Dynamical friction and the evolution of satellites in virialized halos: the theory of linear response [PDF]

, 1999
The evolution of a small satellite inside a more massive truncated isothermal spherical halo is studied using both the Theory of Linear Response for dynamical friction and N-Body simulations.
Bontekoe Tj. R., Cora S. A., De Blok W. J. G., Fabio Governato, Hernquist L., Lacey C., Lucio Mayer, Monica Colpi, Navarro J. F., Navarro J. F., Navarro J. F., Prugniel P., Seguin P., Seguin P., Weinberg M. D.   +14 more
core   +3 more sources

A Design Method for Redundant Microthruster Layout With Allocation Error

International Journal of Aerospace Engineering
The microthruster is generally chosen as the actuator of the drag-free satellite control system, and the layout directly affects the stability of the satellite control.
Mingwei Chen, Chu Zhang, Jianwu He, Chao Yang, Li Duan, Qi Kang   +5 more
doaj   +1 more source

A catalog of atmospheric densities from the drag on five artificial satellites [PDF]

Atmospheric densities from satellite drag ...
Jacchia, L. G., Slowey, J. W.
core   +1 more source

A new laser-ranged satellite for General Relativity and space geodesy: I. An introduction to the LARES2 space experiment [PDF]

, 2017
We introduce the LARES 2 space experiment recently approved by the Italian Space Agency (ASI). The LARES 2 satellite is planned for launch in 2019 with the new VEGA C launch vehicle of ASI, ESA and ELV.
Ciufolini, Ignazio, Gurzadyan, Vahe, Koenig, Rolf, Matzner, Richard, Paolozzi, Antonio, Paris, Claudio, Pavlis, Erricos C., Penrose, Roger, Ries, John C., Rubincam, David, Sindoni, Giampiero   +10 more
core   +1 more source

Impact of Cattaneo–Christov Heat and Mass Flux on MHD Hybrid Nanofluid Flow Over an Extending Surface With Convective and Mass Flux Effects

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the flow of a magnetized hybrid nanofluid over a permeable stretching surface. The mass and thermal transport within the system is regulated using the Cattaneo–Christov flux theory. The fluid is additionally subjected to thermophoresis, chemical reaction, Brownian motion, and activation energy effects.
Ebrahem A. Algehyne, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

Testing General Relativity and gravitational physics using the LARES satellite

, 2012
The discovery of the accelerating expansion of the Universe, thought to be driven by a mysterious form of `dark energy' constituting most of the Universe, has further revived the interest in testing Einstein's theory of General Relativity.
Ciufolini, Ignazio, Gurzadyan, Vahe, Koenig, Rolf, Matzner, Richard, Paolozzi, Antonio, Pavlis, Erricos, Penrose, Roger, Ries, John, Sindoni, Giampiero   +8 more
core   +1 more source

Finite element analysis of feeding in red and gray squirrels (Sciurus vulgaris and Sciurus carolinensis)

The Anatomical Record, EarlyView.
Abstract Invasive gray squirrels (Sciurus carolinensis) have replaced the native red squirrel (Sciurus vulgaris) across much of Great Britain over the last century. Several factors have been proposed to underlie this replacement, but here we investigated the potential for dietary competition in which gray squirrels have better feeding performance than ...
Philip G. Cox, Peter J. Watson
wiley   +1 more source