The Experts below are selected from a list of 120 Experts worldwide ranked by ideXlab platform
Nikky Kumari - One of the best experts on this subject based on the ideXlab platform.
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stability of the Equilibrium Point of the centre of mass of an extensible cable connected satellites system in case of circular orbit in three dimensional motions
2013Co-Authors: Vijay Kumar, Nikky KumariAbstract:In a linear motion of a system of two cable-connected satellites, one stable Equilibrium Point must exist when perturbative forces like solar pressure, shadow of the earth due to solar pressure, air resistance magnetic force and oblateness of the earth act simultaneously. Actually, we have obtained one stable Point of Equilibrium in case of perturbative forces like the shadow of the earth due to solar radian pressure and oblateness of the earth act together on the three dimensional motion in case of circular motion of two cable connected satellites. Liapunov’s theorem has been used to examine the stability of the Equilibrium Point
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effect of the earth s oblateness the shadow of the earth due to the solar radiation pressure and magnetic force on the motion and stability of two satellites connected by an extensible cable in circular orbit of the centre of mass
IOSR Journal of Mathematics, 2013Co-Authors: Vijay Kumar, Umesh Chandra Singh, Nikky KumariAbstract:In a linear motion of a system of two satellites connected by extensible cable, one stable Equilibrium Point exists when perturbative forces like Solar radiation pressure, shadow of the earth, oblateness of the earth, air resistance and earth's magnetic force act simultaneously. We have obtained one stable Point of Equilibrium in case of perturbative forces like the shadow of the earth due to solar radiation pressure, Magnetic Force and oblateness of the earth acting together on the motion of a system of two satellites connected by extensible cable in the central gravitational field of earth in case of circular orbit of the centre of mass. We have used Liapunov's theorem on stability to examine the stability of the Equilibrium Point.
Weston L Tew - One of the best experts on this subject based on the ideXlab platform.
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cct k2 key comparison of capsule type standard platinum resistance thermometers from 13 8 k to 273 16 k
Metrologia, 2002Co-Authors: A G Steele, B Fellmuth, D I Head, Y Hermier, K H Kang, P P M Steur, Weston L TewAbstract:Calibrated capsule-type standard platinum resistance thermometers were used to compare national realizations of the International Temperature Scale of 1990 (ITS-90) from 13.8033 K, the triple Point of Equilibrium hydrogen, to 273.16 K, the triple Point of water, for seven countries in CIPM Key Comparison CCT-K2. Measurements were made at temperatures close to the eight low-temperature defining fixed Points of the ITS-90, using a copper comparison block capable of simultaneously holding nine thermometers. Two separate measurement runs were performed, allowing two different groups of capsules from each laboratory to be examined. The results are used to determine the degree of equivalence of the independent national realizations of the scale for use in the Mutual Recognition Arrangement Appendix B database. In addition, measurements were made with the first group of thermometers at approximately eighty temperatures throughout the cryogenic range, which provide information to evaluate some of the so-called scale non-uniqueness issues inherent in the ITS-90 interpolation scheme.
Vijay Kumar - One of the best experts on this subject based on the ideXlab platform.
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stability of the Equilibrium Point of the centre of mass of an extensible cable connected satellites system in case of circular orbit in three dimensional motions
2013Co-Authors: Vijay Kumar, Nikky KumariAbstract:In a linear motion of a system of two cable-connected satellites, one stable Equilibrium Point must exist when perturbative forces like solar pressure, shadow of the earth due to solar pressure, air resistance magnetic force and oblateness of the earth act simultaneously. Actually, we have obtained one stable Point of Equilibrium in case of perturbative forces like the shadow of the earth due to solar radian pressure and oblateness of the earth act together on the three dimensional motion in case of circular motion of two cable connected satellites. Liapunov’s theorem has been used to examine the stability of the Equilibrium Point
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effect of the earth s oblateness the shadow of the earth due to the solar radiation pressure and magnetic force on the motion and stability of two satellites connected by an extensible cable in circular orbit of the centre of mass
IOSR Journal of Mathematics, 2013Co-Authors: Vijay Kumar, Umesh Chandra Singh, Nikky KumariAbstract:In a linear motion of a system of two satellites connected by extensible cable, one stable Equilibrium Point exists when perturbative forces like Solar radiation pressure, shadow of the earth, oblateness of the earth, air resistance and earth's magnetic force act simultaneously. We have obtained one stable Point of Equilibrium in case of perturbative forces like the shadow of the earth due to solar radiation pressure, Magnetic Force and oblateness of the earth acting together on the motion of a system of two satellites connected by extensible cable in the central gravitational field of earth in case of circular orbit of the centre of mass. We have used Liapunov's theorem on stability to examine the stability of the Equilibrium Point.
A G Steele - One of the best experts on this subject based on the ideXlab platform.
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cct k2 key comparison of capsule type standard platinum resistance thermometers from 13 8 k to 273 16 k
Metrologia, 2002Co-Authors: A G Steele, B Fellmuth, D I Head, Y Hermier, K H Kang, P P M Steur, Weston L TewAbstract:Calibrated capsule-type standard platinum resistance thermometers were used to compare national realizations of the International Temperature Scale of 1990 (ITS-90) from 13.8033 K, the triple Point of Equilibrium hydrogen, to 273.16 K, the triple Point of water, for seven countries in CIPM Key Comparison CCT-K2. Measurements were made at temperatures close to the eight low-temperature defining fixed Points of the ITS-90, using a copper comparison block capable of simultaneously holding nine thermometers. Two separate measurement runs were performed, allowing two different groups of capsules from each laboratory to be examined. The results are used to determine the degree of equivalence of the independent national realizations of the scale for use in the Mutual Recognition Arrangement Appendix B database. In addition, measurements were made with the first group of thermometers at approximately eighty temperatures throughout the cryogenic range, which provide information to evaluate some of the so-called scale non-uniqueness issues inherent in the ITS-90 interpolation scheme.
D I Head - One of the best experts on this subject based on the ideXlab platform.
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cct k2 key comparison of capsule type standard platinum resistance thermometers from 13 8 k to 273 16 k
Metrologia, 2002Co-Authors: A G Steele, B Fellmuth, D I Head, Y Hermier, K H Kang, P P M Steur, Weston L TewAbstract:Calibrated capsule-type standard platinum resistance thermometers were used to compare national realizations of the International Temperature Scale of 1990 (ITS-90) from 13.8033 K, the triple Point of Equilibrium hydrogen, to 273.16 K, the triple Point of water, for seven countries in CIPM Key Comparison CCT-K2. Measurements were made at temperatures close to the eight low-temperature defining fixed Points of the ITS-90, using a copper comparison block capable of simultaneously holding nine thermometers. Two separate measurement runs were performed, allowing two different groups of capsules from each laboratory to be examined. The results are used to determine the degree of equivalence of the independent national realizations of the scale for use in the Mutual Recognition Arrangement Appendix B database. In addition, measurements were made with the first group of thermometers at approximately eighty temperatures throughout the cryogenic range, which provide information to evaluate some of the so-called scale non-uniqueness issues inherent in the ITS-90 interpolation scheme.