Zobrazeno 1 - 10
of 21
pro vyhledávání: '"S. E. Abd El-Bar"'
Autor:
S. E. Abd El-Bar
Publikováno v:
Journal of Taibah University for Science, Vol 15, Iss 1, Pp 17-25 (2021)
In this research article, a new idea concerning the application of concept of the continued fractions to the expansion of the geopotential is treated. The perturbed motion of the satellite in the oblate gravitational field of the Earth using a potent
Externí odkaz:
https://doaj.org/article/25e1f5b9f22f4a8caf4a308c3987ffca
Autor:
S. E. Abd El-Bar, F. A. Abd El-Salam
Publikováno v:
Mathematical Biosciences and Engineering, Vol 16, Iss 6, Pp 8144-8161 (2019)
In this paper, the infinitesimal orbits around the libration points in the photogravitational oblate restricted problem are computed. To reach this goal, the Hamiltonian of our dynamical model taking into account the considered perturbing forces is c
Externí odkaz:
https://doaj.org/article/86ddb85251d54ce1877ebbe24ca9c7b3
Autor:
S. E. Abd El-Bar, F. A. Abd El-Salam
Publikováno v:
Journal of Applied Mathematics, Vol 2012 (2012)
The orbital dynamics of an artificial satellite in the Earth's atmosphere is considered. An analytic first-order atmospheric drag theory is developed using Lagrange's planetary equations. The short periodic perturbations due to the geopotential of al
Externí odkaz:
https://doaj.org/article/481e3c9cd4ac4eb6b4477b73027ea08b
Autor:
S. E. Abd El-Bar
Publikováno v:
The Journal of the Astronautical Sciences. 68:805-825
In this research, we discussed the equilibruim points in the restricted three body problem (in brief RTBP) such as computing infinitesimal orbits. We investigated the dynamics of the orbits around the equilibrium points in the oblate restricted of th
Autor:
S. E. Abd El-Bar
Publikováno v:
Current Journal of Applied Science and Technology. :56-73
Under the influence of some different perturbations, we study the stability of collinear equilibrium points of the Restricted Three Body Problem. More precisely, the perturbations due to the triaxiality of the bigger primary and the oblateness of the
Autor:
F. A. Abd El-Salam, S. E. Abd El-Bar
Publikováno v:
Canadian Journal of Physics. 97:231-240
In this work the stability of all equilibrium points in the photogravitational relativistic restricted three-body problem (RTBP) with oblate primaries is investigated for arbitrary RTBP systems. Th...
Publikováno v:
Results in Physics, Vol 10, Iss, Pp 176-186 (2018)
In this research paper, new families of frozen orbits of a satellite orbiting the oblate as well as triaxial Moon are investigated. The Hamiltonian of the problem is constructed including the zonal harmonic coefficients of the Moon's gravity field up
Autor:
S. E. Abd El-Bar, F. A. Abd El-Salam
Publikováno v:
Applied Mathematical Modelling. 40:9739-9753
In this study, we investigate special families of frozen orbits for lunar artificial satellites. First, the Hamiltonian of a lunar artificial satellite is constructed. Next, the Hamiltonian is singly averaged by removing the short period coordinate w
Publikováno v:
Results in Physics, Vol 15, Iss, Pp-(2019)
The location of the equilibrium point ΔL1 in the restricted three body problem with oblate primaries is investigated. The zonal harmonic coefficients are retained up to the fourth harmonic coefficient of both primaries. The perturbed mean motion is
Autor:
S. E. Abd El-Bar, F. A. Abd El-Salam
Publikováno v:
Astrophysics and Space Science. 363
In this work Lagrange’s planetary equations for a charged satellite subjected to the Earth’s gravitational and magnetic force fields are solved. The Earth’s gravity, and magnetic and electric force components are obtained and expressed in terms