Ara es mostren els items 21-28 de 28

    • 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
      Accés obert
      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 ...
    • Numerical tools for the analysis of parachutes 

      Flores Le Roux, Roberto Maurice; Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      The design and evaluation of parachute-payload systems is a technology field in which numerical analysis tools can make very important contributions. This work describes a new development from CIMNE in this area, a coupled ...
    • On the solution of Lambert's problem by regularization 

      Torre Sangrà, David de la; Flores Le Roux, Roberto Maurice; Fantino, Elena (2018-12)
      Article
      Accés obert
      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 ...
    • PUMI: un código explícito no estructurado para resolver las ecuaciones de Euler 

      Flores Le Roux, Roberto Maurice; Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio (Universitat Politècnica de Catalunya. CIMNE, 2011)
      Accés obert
      El código PUMI se ha desarrollado en CIMNE para resolver rápidamente problemas de flujo compresible alrededor de geometrías complejas. En la actualidad se llevan a cabo de manera rutinaria cálculos con mallas que contienen ...
    • Ram-air parachute simulation with panel methods and staggered coupling 

      Ortega, Enrique; Flores Le Roux, Roberto Maurice; Pons Prats, Jordi (2016-09-07)
      Article
      Accés obert
    • Reduction of Saturn orbit insertion impulse using deep-space low thrust 

      Fantino, Elena; Flores Le Roux, Roberto Maurice; Peláez Álvarez, Jesús; Raposo-Pulido, Virginia (American Institute of Aeronautics and Astronautics, 2020-02-17)
      Article
      Accés obert
      Orbit insertion at Saturn requires a large impulsive manoeuver due to the velocity difference between the spacecraft and the planet. This paper presents a strategy to reduce dramatically the hyperbolic excess speed at ...
    • Shape optimization in aeronautical applications using neural networks 

      Daring, Alan; Flores Le Roux, Roberto Maurice; Bugeda Castelltort, Gabriel; Oñate Ibáñez de Navarra, Eugenio (2007-06)
      Report de recerca
      Accés obert
      An optimization methodology based on neural networks was developed for use in 2D optimal shape design problems. Neural networks were used as a parameterization scheme to represent the shape function, and an edge-based ...
    • Unveiling modal parameters with forced response using SVD and QR during flutter flight testing 

      Barros Rodriguez, José; Fernandez Fructuoso, José Miguel; Flores Le Roux, Roberto Maurice; Sanchez Prieto, Sebastián; Rodríguez Polo, Oscar (2018-01-01)
      Article
      Accés obert
      This article presents an algorithm for the identification of modal parameters during flutter flight testing when forced excitation is employed and the aircraft possesses several sensors for structural response acquisition. ...