Results 171 to 180 of about 349 (223)

Magnetic signatures for satellite anomalies

Journal of Spacecraft and Rockets, 1991
Similarities have been found between the yearly trends of magnetic activity and the occurrences of electrostatic discharge events on a geosynchronous communication satellite from April 1983 to December 1987 in the declining portion of the 11-year solar cycle.
Hing-Lan Lam, Jaroslava Hruska
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Magnetic Sensor in Bhaskara Satellite

IETE Journal of Research, 1979
The magnetic sensor used in Bhaskara satellite is described. Principle of flux-gate magnetometer, circuit details, test and calibration are explained. Finally, the flight performance of the above sensor is presented.
S. Ramanujam, T.K. Alex, V.R. Narayanaswamy   +2 more
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Magnetic control of satellite attitude

IEEE Transactions on Communication and Electronics, 1964
Advantages and disadvantages of controlling magnetization in ferromagnetic material to produce torques required for satellite attitude ...
G. E. Lynn, J. G. Hurt, K. A. Harriger
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Small Satellite Magnetism Control for Velocity Damping

2011 Second International Conference on Digital Manufacturing & Automation, 2011
Velocity damping is the process in which the angular velocity of the satelLite sHould be controlled to reduce expeditiously after being released from the rocket. The velocity damping control process is of great importance for the subsequent satelLite three-axis attitude stabiLization.
Dong Hao, Tao Sheng, Xiaoqian Chen
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Magnetic Damping of Rotation of the Vanguard I Satellite

Science, 1960
Explicit integration of integrals of the type basic to comparison of observed and predicted values of the earth's mean total magnetic field reveals an error in the numerical integration recently employed by Raymond H. Wilson, Jr., in making such a comparison for the special case of Vanguard I.
L, Lapaz, R H, Wilson
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Earth's magnetic field models for dumping momentum magnetically on GPS satellites

Astrodynamics Conference, 1980
This paper discusses the relative performance of various Earth magnetic field models in a system for using onboard electromagnets to dump unwanted reaction wheel momentum on Global Positioning System satellites. The system uses the interaction between the Earth's magnetic field and the satellite's electromagnetically induced field to control the ...
Thomas J. Eller, David A. Wagie
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Magnetic Satellite Missions and Data

2010
Although the first satellite observations of the Earth’s magnetic field were already taken more than 50 years ago, continuous geomagnetic measurements from space are only available since 1999. The unprecedented time-space coverage of this recent data set opened revolutionary new possibilities for exploring the Earth’s magnetic field from space.
Nils Olsen, Stavros Kotsiaros
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Attitude stabilization of a satellite by magnetic coils

Acta Astronautica, 2002
Abstract Stabilization problem for a satellite is considered. The only measurement is of the geomagnetic field in the satellite coordinates. The control is carried out by a magnetic moment of current coils (magnetorquers) mounted on the satellite body.
Vladimir A. Bushenkov, Michael Yu. Ovchinnikov, Georgi V. Smirnov   +2 more
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Satellite magnetic anomalies of Africa and Europe

SEG Technical Program Expanded Abstracts 1982, 1982
Preliminary MAGSAT scalar magnetic anomaly data of Africa, Europe, and adjacent marine areas were reduced to the pole assuming a constant inducing Earth's magnetic field of 60,000 nT. This process leads to a consistent anomaly data set free from marked variations in directional and intensity effects of the Earth's magnetic field over this extensive ...
R. Olivier, W. J. Hinze, R. R. B. von Frese   +2 more
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Magnetic Damping of the Angular Motions of Earth Satellites

ARS Journal, 1961
1 Kerrebrock, J. L. and Meghreblian, R. V., "An Analysis of Vortex Tubes for Combined Gas-Phase Fission Heating and Separation of the Fissionable Material," ORNL CF-57-11-3, revision 1, April 11, 1958. 2 Kerrebrock, J. L. and LaFyatis, P. G., "Analytical Study of Some Aspects of Vortex Tubes for Gas-Phase Fission Heating," ORNL CF-587-4, July 1958.
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