Results 1 to 10 of about 12,220 (308)

Practical uncertainty quantification in orbital mechanics

open access: yes, 2019
The chapter provides an overview of methods to quantify uncertainty in orbital mechanics. It also provides an initial classification of these methods with particular attention to whether the quantification method requires a knowledge of the system model ...
Vasile, Massimiliano   +1 more
core   +4 more sources

Conservation of the spin and orbital angular momenta in electromagnetism

open access: yesNew Journal of Physics, 2014
We review and re-examine the description and separation of the spin and orbital angular momenta (AM) of an electromagnetic field in free space. While the spin and orbital AM of light are not separately meaningful physical quantities in orthodox quantum ...
Konstantin Y Bliokh   +2 more
doaj   +1 more source

Interception and deviation of near earth objects via solar collector strategy [PDF]

open access: yes, 2008
A solution to the asteroid deviation problem via a low-thrust strategy is proposed. This formulation makes use of the proximal motion equations and a semi-analytical solution of the Gauss planetary equations.
Vasile, M.   +5 more
core  

Propagation-Invariant Off-Axis Elliptic Gaussian Beams with the Orbital Angular Momentum

open access: yesPhotonics, 2021
We studied paraxial light beams, obtained by a continuous superposition of off-axis Gaussian beams with their phases chosen so that the whole superposition is invariant to free-space propagation, i.e., does not change its transverse intensity shape ...
Alexey A. Kovalev   +2 more
doaj   +1 more source

Active debris removal mission from LEO with electric and hybrid propulsion [PDF]

open access: yes, 2011
Debris proliferation in space environment is an impending problem for preserving future missions. Although prevention measures (IADC guidelines, NASA Handbook for Limiting Orbit Debris) with the intent to regulate and limit the space trac are adopted,
Sansica, A.
core  

Generation of Magnon Orbital Angular Momentum by a Skyrmion-Textured Domain Wall in a Ferromagnetic Nanotube

open access: yesFrontiers in Physics, 2022
We develop a theory for the dynamics of a magnon on top of a domain wall in a ferromagnetic nanotube. Due to the geometry of the sample, domain walls are classified by the Skyrmion charge which counts the winding number of magnetic textures.
Seungho Lee, Se Kwon Kim
doaj   +1 more source

Quark-Parton Model and Relativistic Quantum Mechanics

open access: yesEPJ Web of Conferences, 2018
An attempt to treat the asymptotic freedom and the quark confinement as a self-consistent problem in the framework of relativistic quantum mechanics is realized.
Kostenko Boris
doaj   +1 more source

Teaching-oriented modeling and numerical demonstration of Newton's law of gravitation

open access: yesFrontiers in Applied Mathematics and Statistics
Based on Newton's laws of motion and Kepler's empirical laws, this study presents a pedagogically oriented derivation of the inverse-square law of gravitation and develops a numerical model to simulate two-dimensional planetary motion under central ...
Baolu Fan, Yang Liu
doaj   +1 more source

JUMPSAT: Qualifying three equipments in one Cubesat mission [PDF]

open access: yes, 2013
We work on a student 3U Cubesat mission, called JUMPSAT, expected for 2017. This is a collaborative project involving both institutions (CNES, ONERA) and schools (ISAE, TELECOM Bretagne).
Grave, Julien   +4 more
core  

Numerical simulation of flow past a cylinder in orbital motion

open access: yes, 2004
A finite difference solution is presented for 2D laminar unsteady flow around a circular cylinder in orbital motion placed in a uniform flow for Re = 130, 160, and 180. Four cases displaying full lock-in are presented.
Baranyi, László
core  

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