Now showing items 1-13 of 13

  • Analysis of perturbations and station-keeping requirements in highly-inclined geosynchronous orbits 

    Fantino, Elena; Flores Le Roux, Roberto Maurice; Di Salvo, Alessio; Di Carlo, Marilena (2015)
    Conference report
    Open Access
    There is a demand for communications services at high latitudes that is not well served by conventional geostationary satellites. Alternatives using low-altitude orbits require too large constellations. Other options are ...
  • A note on libration point orbits, temporary capture and low-energy transfers 

    Fantino, Elena; Gómez, Gerard; Masdemont Soler, Josep; Ren, Yuan (2010-11)
    Article
    Restricted access - publisher's policy
  • Efficient Two-Body Approximations of Impulsive Transfers between Halo Orbits 

    Fantino, Elena; Flores Le Roux, Roberto Maurice; Al-Khateeb, Ashraf (International Astronautical Federation, 2018)
    Conference report
    Restricted access - publisher's policy
    This contribution presents an efficient method to compute direct transfers between Halo orbits from two circular restricted three-body problems. Owing to the remarkable impulse given over the past two decades to the plans ...
  • Geosynchronous inclined orbits for high-latitude communications 

    Fantino, Elena; Flores Le Roux, Roberto Maurice; Di Carlo, Marilena; Di Salvo, Alessio; Cabot Soler, Elisenda (2017-11-01)
    Article
    Restricted access - publisher's policy
    We 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 ...
  • Minimum-fuel escape from two body sun-earth system 

    Colasurdo, Guido; Casalino, Lorenzo; Fantino, Elena (1999)
    Article
    Restricted access - publisher's policy
    Escaping from the solar system by receiving gravity assist from the Earth is considered in this paper. A simple procedure,which neglects the eccentricity of the Earth’s orbit and uses the two-body problem equations and ...
  • On the mechanisms of natural transport in the solar system 

    Masdemont Soler, Josep; Ren, Yuan; Gómez Muntané, Gerard; Fantino, Elena (2010)
    Conference report
    Open Access
    Some minor bodies in the solar system (i.e., comets, asteroids and planetary ejecta) are capable of performing transfers from their original location to very distant places, provided they possess sufficiently large ...
  • On the relationship between the weak stability boundary region of the earth and the low-energy transfers to the moon 

    Masdemont Soler, Josep; Ren, Yuan; Gómez Muntané, Gerard; Fantino, Elena (2009)
    Conference report
    Open Access
    The term Weak Stability Boundary (WSB) is related to a region of stable motion around the second primary of a circular restricted three-body problem (CR3BP). Previous work on this subject has shown that, at a given energy ...
  • On the relationship between the weak stability boundary region of the earth and the low-energy transfers to the moon 

    Masdemont Soler, Josep; Ren, Yuan; Fantino, Elena; Gómez Muntané, Gerard (2009)
    Conference report
    Open Access
    The term Weak Stability Boundary (WSB) is related to a region of stable motion around the second primary of a circular restricted three-body problem (CR3BP). Previous work on this subject has shown that, at a given energy ...
  • On the solution of Lambert's problem by regularization 

    Torre Sangrà, David de la; Flores Le Roux, Roberto Maurice; Fantino, Elena (2018-12)
    Article
    Restricted access - publisher's policy
    Lambert's problem is the two-point boundary-value problem resulting from a two-body orbital transfer between two position vectors in a given time. It lies at the very heart of several fundamental astrodynamics and space ...
  • Optimal low-thrust transfers between libration point orbits 

    Ren, Yuan; Pergola, Pierpaolo; Fantino, Elena; Thiere, B. (2012-01)
    Article
    Restricted access - publisher's policy
    Over the past three decades, ballistic and impulsive trajectories between libration point orbits (LPOs) in the Sun–Earth–Moon system have been investigated to a large extent. It is known that coupling invariant manifolds ...
  • Review of Lambert's problem 

    Torre Sangrà, David de la; Fantino, Elena (2015)
    Conference lecture
    Open Access
    Lambert’s problem is the orbital boundary-value 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 ...
  • Star visibility and tracking from the Space Station 

    Bernacca, Pier Luigi; Facchinetti, Claudia; Fantino, Elena (2010-12)
    Article
    Restricted access - publisher's policy
    Purpose of the present study is to provide algorithms for and examples of how to simulate star visibility and tracking by a Telescope attached to the main truss of the International Space Station (ISS). The sky visibility ...
  • Two mechanisms of natural transport in the Solar System 

    Ren, Yuan; Gomez Muntaner, Gerard; Masdemont Soler, Josep; Fantino, Elena (2011)
    Article
    Restricted access - publisher's policy
    In this paper, two natural transport mechanisms in Solar System are considered. The first is a short-time transport, and is based on the existence of ‘‘pseudo-heteroclinic’’ connections between libration point orbits of ...