Browsing by Subject "Orbital mechanics"
Now showing items 1-20 of 29
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A method for the experimental characterisation of novel drag-reducing materials for very low Earth orbits using the Satellite for Orbital Aerodynamics Research (SOAR) mission
(2022-10)
Article
Open AccessThe Satellite for Orbital Aerodynamics Research (SOAR) is a 3U CubeSat mission that aims to investigate the gas–surface interactions (GSIs) of diferent materials in the very low Earth orbit environment (VLEO), i.e. below ... -
A review of gas-surface interaction models for orbital aerodynamics applications
(2020-11)
Article
Open AccessRenewed interest in Very Low Earth Orbits (VLEO) - i.e. altitudes below 450 km - has led to an increased demand for accurate environment characterisation and aerodynamic force prediction. While the former requires knowledge ... -
Analysis of Perturbation incidence in the calculation of trajectories in Ephemeris Model
(Universitat Politècnica de Catalunya, 2020-01-14)
Master thesis
Open Access
Covenantee: Cranfield UniversityThe main goal of this thesis is to deepen the understanding of the influence that the various perturbations exert on the trajectory calculations performed by the JPL ephemeris model to provide high-fidelity ephemeris in ... -
Arnold's mechanism of diffusion in the spatial circular restricted three-body problem: A semi-analytical argument
(2016-11-01)
Article
Open AccessWe consider the spatial circular restricted three-body problem, on the motion of an infinitesimal body under the gravity of Sun and Earth. This can be described by a 3-degree of freedom Hamiltonian system. We fix an energy ... -
Buscando órbitas períodicas
(Real Sociedad Matemática Española, 2020-11-07)
Article
Open AccessEn este artículo presentamos una aproximación topológica y geométrica al estudio de órbitas periódicas (existencia y localización) tomando como punto de partida problemas de mecánica celeste. Describimos, a grandes rasgos, ... -
Combined low-thrust propulsion and invariant manifold trajectories to capture NEOs in the Sun-Earth circular restricted three-body problem
(2014-11-01)
Article
Restricted access - publisher's policyIn this paper, a method to capture near-Earth objects (NEOs) incorporating low-thrust propulsion into the invariant manifolds technique is investigated. Assuming that a tugboat-spacecraft is in a rendez-vous condition with ... -
Direct MSTID mitigation in precise GPS processing
(2017-03)
Article
Open AccessIn this paper, the authors summarize a simple and efficient approach developed to mitigate the problem in precise GNSS positioning originated by the most frequent ionospheric wave signatures: the Medium Scale Travelling ... -
Dynamics and mission design near libration points, advanced methods for collinear points
(2000)
Article
Open AccessPreface and table of contents of a forthcoming book published by World Scientific -
Dynamics and mission design near libration points, advanced methods for triangular points
(2000)
Article
Open AccessThe final objective of this work is to understand, analyze and compute the kinds of motion that appear on a vicinity (may be a large vicinity) of the geometrically defined equilateral points of the Earth-Moon system, as a ... -
Ejection-collision orbits in the Restricted three-body problem
(2018-02)
Article
Open AccessIn this paper we analyse the ejection-collision (EC) orbits of the planar restricted three body problem. Being µ¿¿¿(0, 0.5] the mass parameter, and taking the big (small) primary with mass (µ), an EC orbit will be an orbit ... -
Estabilitat orbital d'un satèl·lit situat als punts L4/L5 del Sistema Terra-Lluna
(Universitat Politècnica de Catalunya, 2009-07-20)
Bachelor thesis
Open Access -
Feasibility study of the CASTOR Mission for small space debris in situ monitoring
(Universitat Politècnica de Catalunya, 2021-06-22)
Bachelor thesis
Open AccessAquest treball presenta l'estudi numèric de viabilitat de l'arquitectura de missió proposada per l'equip 4DCube de l'IEEC per a monitorització in situ de fragments petits de brossa espacial (<10 cm) des de nanosatèl·lits. ... -
Global instability in the restricted planar elliptic three body problem
(2018-01-01)
Article
Open AccessThe restricted planar elliptic three body problem (RPETBP) describes the motion of a massless particle (a comet or an asteroid) under the gravitational field of two massive bodies (the primaries, say the Sun and Jupiter) ... -
Improving the performances of Orbit Restitution by menas of a Kalman filter
(Universitat Politècnica de Catalunya, 2009-08-03)
Master thesis (pre-Bologna period)
Open Access -
Impulsive transfers between lissajous libration point orbits
(2003)
Article
Open AccessA complete methodology for the transfer between two Lissajous orbits around the same collinear equilibrium point is developed making use of the geometry of the phase space around these points. The result of the study ... -
Initial orbit determination and satellite tracking using optical observations
(Universitat Politècnica de Catalunya, 2021-07-15)
Master thesis
Restricted access - author's decision
Covenantee: Xīběi Gōngyè DàxuéThe objective of this project is to propose a passive method for orbit determination (OD) of GEO objects using observational data as position measurements. The proposed method use position measurements expressed as right ... -
Mubody, an astrodynamics open-source Python library focused on libration points
(Universitat Politècnica de Catalunya, 2022-04-29)
Conference lecture
Open AccessMubody is an astrodynamics open-source Python library focused on the libration points. Such points result from the equilibrium of the gravitational forces between two massive bodies as the Sun and Earth, for example. The ... -
Natural configurations for formation flying around triangular libration points for the elliptic and the bicircular problem in the earth-moon system
(2014)
Conference report
Open AccessThe concept of Satellite Formation Flying (SFF) means to have two or more satellites in orbit such that their relative positions remain constant or obeying a certain dynamical configuration along the trajectory. This ... -
Natural formations at the Earth-Moon triangular point in perturbed restricted problems
(2015-07-01)
Article
Open AccessPrevious studies for small formation flying dynamics about triangular libration points have determined the existence of regions of zero and Minimum Relative Radial Acceleration with respect to the nominal trajectory, that ... -
Nonlinear dynamics in an extended neighbourhood of the translunar equilibrium point
(1995)
Article
Open Access
