Browsing by Subject "Orbits"
Now showing items 120 of 28

A model for Janus and Epimetheus
(Universitat Politècnica de Catalunya, 201510)
Bachelor thesis
Open AccessIn this work we present a model that tries to fit the behaviour of Janus and Epimetheus, two coorbital moons of Saturn. This has been done before using the model for the twodimensional restricted threebody problem, and ... 
Analysis of the relative dynamics of a charged spacecraft moving under the influence of a magnetic field
(20180901)
Article
Restricted access  publisher's policyWe 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
Open AccessThere is a wide class of integrable Hamiltonian systems on ﬁnitedimensional 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, 20160713)
Master thesis
Open AccessThis 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, 20160907)
Master thesis
Open AccessIn 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
(200305)
Article
Open AccessWe 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 ... 
Dynamics around the triangular libration points of 1999 KW4
(2018)
Conference report
Restricted access  publisher's policyHis 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 threebody problem
(20151201)
Article
Open AccessThe 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 ... 
Formation flying in space borne artificial magnetic dipole field
(2017)
Conference lecture
Open AccessIn 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 highlatitude communications
(20171101)
Article
Restricted access  publisher's policyWe present and discuss a solution to the growing demand for satellite telecommunication coverage in the highlatitude geographical regions (beyond 55°N), where the signal from geostationary satellites is limited or ... 
J2 effect and elliptic inclined periodic orbits in the collision threebody problem
(200801)
Article
Open AccessThe existence of a new class of inclined periodic orbits of the collision restricted three{body problem is shown. The symmetric periodic solutions found are perturbations of elliptic kepler orbits and they exist only for ... 
Jet Transport propagation of uncertainties for orbits around the Earth
(2013)
Conference report
Open AccessIn this paper we present a tool to study the nonlinear propagation of uncertainties for orbits around the Earth. The tool we introduce is known as Jet Transport and allows to propagate full neighborhoods of initial states ... 
Libration transfer design using patched elliptic threebody models and graphics processing units
(20170101)
Article
Open AccessCopyright © 2016 by the American Institute of Aeronautics and Astronautics, Inc. Design of the transfer from lunar orbits to the sunEarth libration point region by direct searching in the highfidelity ephemeris model is ... 
Optimized modelbased design space exploration of distributed multiorbit multiplatform Earth observation spacecraft architectures
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access  publisher's policySatellite architectures where networked, heterogeneous observation nodes capture data in a distributed manner are seen as feasible solutions to address the needs of nextgeneration Earth observation services (i.e. higher ... 
Orbits of controllable and observable systems
(1999)
Article
Open AccessLet a timeinvariant linear system $\left .\aligned \dot x(t)&=Ax(t)+Bu(t)\\y(t)&=Cx(t)\endaligned \right \}$ corresponding to a realization of a prescribed transfer function matrix can be represented by triples of ... 
Oscillatory orbits in the restricted elliptic planar three body problem
(Southwest Missouri State University, 20170101)
Article
Open AccessThe restricted planar elliptic three body problem models the motion of a massless body under the Newtonian gravitational force of two other bodies, the primaries, which evolve in Keplerian ellipses. A trajectory is called ... 
Review of Lambert's problem
(2015)
Conference lecture
Open AccessLambert’s problem is the orbital boundaryvalue problem constrained by two points and elapsed time. It is one of the most extensively studied problems in celestial mechanics and astrodynamics, and, as such, it has always ... 
Secular instability in the threebody problem
(20160203)
Article
Open Access© 2016 European Union Consider the threebody problem, in the regime where one body revolves far away around the other two, in space, the masses of the bodies being arbitrary but fixed; in this regime, there are no resonances ... 
Solar radiation pressure assisted transfers between Lissajous orbits of the SunEarth system
(2016)
Conference report
Restricted access  publisher's policyThis article investigates a propellantfree transfer between Lissa jous orbits in the SunEarth system modelled as a photogravitational circular restricted three body p roblem. The geometry of the phase space around the ... 
Solar sail propellantfree transfer maneuvers between libration point orbits around the collinear equilibrium points
(2018)
Conference report
Restricted access  publisher's policyThis paper investigates propellantfree transfers between lissajous libration point orbits using solar sailing. The dynamical model used is the 3dimensional Sun–Earth restricted threebody problem, including solar radiation ...