Exploració per tema "Orbits"
Ara es mostren els items 1-20 de 50
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A model for Janus and Epimetheus
(Universitat Politècnica de Catalunya, 2015-10)
Treball Final de Grau
Accés obertIn this work we present a model that tries to fit the behaviour of Janus and Epimetheus, two co-orbital moons of Saturn. This has been done before using the model for the two-dimensional restricted three-body problem, and ... -
An approach to some classical libration point orbit problems by means of artificial intelligence tecniques
(Universitat Politècnica de Catalunya, 2021-11-29)
Projecte Final de Màster Oficial
Accés obertRapid developments in the last decade have demonstrated the potential of new techniques within the Artificial Intelligence (AI) field as an effective approach for different classical problems in the area of astrodynamics. ... -
Analysis of the relative dynamics of a charged spacecraft moving under the influence of a magnetic field
(2018-09-01)
Article
Accés obertWe analyse a dynamical scenario where a constantly charged spacecraft (follower) moves in the vicinity of another one (leader) that follows a circular Keplerian orbit around the Earth and generates a rotating magnetic ... -
Backlund transformations on coadjoint orbits of the loop algebra gl(n)
(2003)
Article
Accés obertThere is a wide class of integrable Hamiltonian systems on finite-dimensional coadjoint orbits of the loop algebra ˜ gl(r) which are represented by r × r Lax equations with a rational spectral parameter.A reduced complex ... -
Computation of libration point orbits and manifolds using collocation methods
(Universitat Politècnica de Catalunya, 2016-07-13)
Projecte Final de Màster Oficial
Accés obertThis thesis contains a methodology whose aim is to compute trajectories describing natural motion of the phase space in a neighborhood of Libtation points and stable/unstable manifolds which correspond to these orbits in ... -
Conservation of orbital angular momentum in crystals with a random domain distribution of nonlinearity in SHG
(Universitat Politècnica de Catalunya, 2016-09-07)
Projecte Final de Màster Oficial
Accés obertIn this master thesis we build an experimental setup for studying the conservation of the orbital angular momentum (OAM) of light in second harmonic generation (SHG) in Strontium Barium Niobate (SBN) crystals with random ... -
Coorbital periodic orbits in the three body problem
(2003-05)
Article
Accés obertWe consider the dynamics of coorbital motion of two small moons about a large planet which have nearly circular orbits with almost equal radii. These moons avoid collision because they switch orbits during each close ... -
Design and development of a hyper-thermal atomic oxygen wind tunnel facility
(Centre National d'Études Spatiales (CNES), 2018)
Comunicació de congrés
Accés restringit per política de l'editorialA hyper-thermal orbital aerodynamics test facility is described. The Rarefied Orbital Aerodynamics Research facility(ROAR)is a dedicated apparatus designedto simulate the atmospheric flow in very low Earth orbits(VLEO) to ... -
Design of a business roadmap methodology: application in materials technology for Very Low Earth Orbits (VLEO) missions
(Universitat Politècnica de Catalunya, 2023-07-18)
Treball Final de Grau
Accés obertThis dissertation aims to develop a roadmap methodology incised in developing new materials in Very Low Earth Orbits (VLEO). Said orbits go from 200 to 1200 km, presenting characteristics such as extreme temperatures, ... -
Digital control and optimization of an interferometric orbit observation system for GEOSAR missions
(Universitat Politècnica de Catalunya, 2020-07-17)
Treball Final de Grau
Accés restringit per acord de confidencialitat -
Dinàmica de varietats espacials: les autopistes de l’univers
(2019-12-20)
Article
Accés obertEn aquest article volem il.lustrar com la comprensió de la dinàmica d’alguns models de la mecànica celeste permet explicar alguns fenòmens astronòmics i dissenyar missions realistes a l’espai. El model paradigmàtic usat ... -
Dynamical model design and interferometric precise orbit determination for GEOSAR missions
(Universitat Politècnica de Catalunya, 2020-07-20)
Treball Final de Grau
Accés restringit per acord de confidencialitat -
Dynamics around the triangular libration points of 1999 KW4
(2018)
Text en actes de congrés
Accés restringit per política de l'editorialHis paper studies the dynamics of stable regions for relatively long time intervals (practical stability) in the vicinity of the triangular equilibrium points of a binary asteroid with mass ratio µ larger than Rouths ... -
Dynamics of the parabolic restricted three-body problem
(2015-12-01)
Article
Accés obertThe main purpose of the paper is the study of the motion of a massless body attracted, under the Newton's law of gravitation, by two equal masses moving in parabolic orbits all over in the same plane, the planar parabolic ... -
Editorial: The earth–moon system as a dynamical laboratory
(2019-06-12)
Article
Accés obert -
Estudio sobre trayectorias periódicas alrededor del punto de Lagrange L2 en el sistema Tierra-Luna, bajo el efecto de perturbaciones
(Universitat Politècnica de Catalunya, 2015-06)
Treball Final de Grau
Accés restringit per decisió de l'autor1. Introducció del problema de tres cossos circular restringit: sistema sinòdic, punts d'equilibri (o punts de Lagrange) i estabilitat d'aquests, i trajectòries periòdiques.2. Obtenció de les trajectòries periòdiques al ... -
Formation flying in space borne artificial magnetic dipole field
(2017)
Comunicació de congrés
Accés obertIn this paper, we consider a new dynamical scenario in which a constantly charged spacecraft (follower) moves near a leader spacecraft, which follows a circular Keplerian orbit around the Earth and generates a rotating ... -
Geosynchronous inclined orbits for high-latitude communications
(2017-11-01)
Article
Accés obertWe present and discuss a solution to the growing demand for satellite telecommunication coverage in the high-latitude geographical regions (beyond 55°N), where the signal from geostationary satellites is limited or ... -
Global controllability tests for geometric hybrid control systems
(2020-11-01)
Article
Accés obertThis paper introduces a novel geometric framework to define and study hybrid systems. We exploit the geometry and topology of the set of jump points, where the instantaneous change of dynamics takes place, in order to gain ... -
Hopf-Zero singularities truly unfold chaos
(2020-05-01)
Article
Accés obertWe provide conditions to guarantee the occurrence of Shilnikov bifurcations in analytic unfoldings of some Hopf-Zero singularities through a beyond all order phenomenon: the exponentially small breakdown of invariant ...