Results 1 to 10 of about 577 (256)

The collinear equilibrium points in the elliptic restricted synchronous three-body problem under an oblate primary and a dipole secondary [PDF]

open access: yesHeliyon, 2023
The study investigates the collinear positions and stability in the elliptic restricted synchronous three-body problem under an oblate primary and a dipole secondary for Luhman 16 and HD188753 systems. Our study has established four collinear equilibrium
Jagadish Singh, Richard K. Tyokyaa
doaj   +2 more sources

Four-dimensional computed tomography evaluation of shoulder joint motion in collegiate baseball pitchers [PDF]

open access: yesScientific Reports, 2022
The purpose of this study is to evaluate the glenohumeral contact area, center of glenohumeral contact area, and center of humeral head during simulated pitching motion in collegiate baseball pitchers using four-dimensional computed tomography (4D CT ...
Daisuke Momma   +6 more
doaj   +2 more sources

Orbital dynamics in the Hill problem with oblateness

open access: yesResults in Physics, 2023
In this paper, we investigate the impact of the oblateness of the secondary body on the motion of a test particle in the near vicinity of the secondary body, specifically in the context of the extended version of the planar Hill problem.
Eman M Moneer   +2 more
exaly   +3 more sources

Dynamics around small irregularly shaped objects modeled as a mass dipole [PDF]

open access: yesScientific Reports
In this work, we investigate the dynamics of a spacecraft near two primary bodies. The massive body is considered to have a spherical shape, while the less massive one is elongated and modeled as a dipole. The dipole consists of two connected masses, one
Ahmed A. Abozaid   +3 more
doaj   +2 more sources

Effects of Albedo and Oblateness in the Bi-Circular Restricted Four-Body Problem

open access: yesPartial Differential Equations in Applied Mathematics, 2023
In this paper, a bicircular model describing motion of a spacecraft around the Sun–Earth–Moon system is studied. The impact of important characterizations such as radiation from the Sun, the Earth’s and Moon’s Albedo and oblateness of the Moon are all ...
Jagadish Singh, Solomon Okpanachi Omale
exaly   +3 more sources

An Orbit-flip Mechanism by Eccentric Lidov–Kozai Effect with Stellar Oblateness

open access: yesThe Astronomical Journal, 2023
Orbit flips have been previously found under the eccentric Lidov–Kozai effect (ELK) in hierarchical three-body systems. Recently, we have found that, in certain conditions, the orbit can flip its orientation in a much different manner, where the stellar ...
Yue Wang, Tao Fu
doaj   +1 more source

Increased Caribbean seismicity and volcanism during minima in Earth’s rotation rate: Search for a physical mechanism and a 2030 forecast

open access: yesFrontiers in Earth Science, 2022
Three quarters of all Mw ≥ 6.6 earthquakes and volcanic eruptions surrounding the Caribbean plate occur preferentially during periods of decadal minima in Earth’s angular spin velocity.
Roger Bilham   +5 more
doaj   +1 more source

Effects of mouth shape of conical netting constructions on properties of their resistance [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1982
Results of tests performed on 18 conical netting constructions, each construction being; a simplified model of the netting part of a trawl, are presented.
S. Dudko   +5 more
doaj   +3 more sources

Deployment of Small Satellite Constellations Using the Effect of the Earth’s Oblateness [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2023
Recent advancements in space technology have sparked significant interest in small satellite constellations, primarily due to their reduced costs, quicker development cycles, and improved capabilities.
Seid Javad Mousavi Torkamani   +2 more
doaj   +1 more source

Analysis of the Motion of a Tether-Perturbed Satellite [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2003
The motion of each satellite in a tethered satellite system is non-Keplerian in the Earth's gravitational field. In this paper, the tether perturbation force is formulated and compared with the perturbation force due to the Earth's oblateness.
Sungki Cho, Jaehoon Kim
doaj   +1 more source

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