Exploració per autor "Torre Sangrà, David de la"Més informacióMés informació

Ara es mostren els items 1-10 de 10

    • An automatic tree search algorithm for the Tisserand graph 

      Torre Sangrà, David de la; Flores Le Roux, Roberto Maurice; Fantino, Elena; Calvente Lozano, Oscar; García Estelrich, Celestin (Elsevier, 2021-02)
      Article
      Accés obert
      The Tisserand graph (TG) is a graphical tool commonly employed in the preliminary design of gravity-assisted trajectories. The TG is a two-dimensional map showing essential orbital information regarding the Keplerian orbits ...

    • Considering TMA holding uncertainty into in-flight trajectory optimisation 

      Delgado Muñoz, Luis; Torre Sangrà, David de la; Kuljanin, Jovana; Prats Menéndez, Xavier (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Aircraft crew are aware of the delay they have experienced at departure. However, uncertainties ahead, and in particular holdings at arrival, can have an impact on the final performance of their operations. When optimising ...

    • Feasibility study of aerocapture at Mars with an innovative deployable heat shield 

      Isoletta, Giorgio; Grassi, Michele; Fantino, Elena; Torre Sangrà, David de la; Peláez Álvarez, Jesús (2021-06-28)
      Article
      Accés obert
      Performing orbital insertion around Mars using aerocapture instead of a propulsive orbit insertion maneuver allows the saving of resources and/or the increase of the payload mass fraction. Aerocapture has never been employed ...

    • In-flight cost index optimisation upon weather forecast updates 

      Prats Menéndez, Xavier; Torre Sangrà, David de la; Delgado Muñoz, Luis (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      This paper presents an optimisation framework to compute the altitude and speed profiles of a trajectory in the execution phase of the flight, such that the expected total cost (ETC) of the operation is minimised (i.e. ...

    • 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 ...

    • Optimization of interplanetari trajectories with gravity assist 

      Torre Sangrà, David de la (Universitat Politècnica de Catalunya, 2020-07-28)
      Tesi
      Accés obert
      Interplanetary travel is a difficult task due to the high fuel mass required to reach other planets. Minimizing the cost of the manoeuvres (and, in turn, the fuel mass) is the objective preliminary mission design. During ...

    • Review of Lambert's problem 

      Torre Sangrà, David de la; Fantino, Elena (2015)
      Comunicació de congrés
      Accés obert
      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 ...

    • SIMBAD - D6.1: Evaluation of the SIMBAD performance modelling framework and implementation guidelines 

      Pons Prats, Jordi; Kuljanin, Jovana; Prats Menéndez, Xavier; Melgosa Farrés, Marc; Torre Sangrà, David de la (2022-12-16)
      Report de recerca
      Accés obert
      This deliverable aims to describe the evaluation activities of the SIMBAD project. The document contains the results of WP6, whose objective is to demonstrate and evaluate the SIMBAD performance modelling network. This ...

    • Study of the Martian environment for application to the design of a greenhouse 

      Torre Sangrà, David de la (Universitat Politècnica de Catalunya, 2014-07)
      Projecte/Treball Final de Carrera
      Accés obert
      The human exploration of Mars belongs to the current plans of NASA and ESA. Getting the astronauts to Mars and returning them safely to Earth imposes several engineering challenges. In particular, creating the conditions ...

    • The Small Mars System 

      Grassi, Michele; Pasolini, Pietro; Causa, Flavia; Molfese, Cesare; Aurigemma, Renato; Cimminiello, Nicola; Torre Sangrà, David de la; Dell'Aversana, Pasquale; Esposito, Francesca; Gramiccia, Luciano; Paudice, Fabio; Punzo, Francesco; Roma, I.; Savino, Raffaele; Zuppardi, Gennaro (2017-08)
      Article
      Accés obert
      The Small Mars System is a proposed mission to Mars. Funded by the European Space Agency, the project has successfully completed Phase 0. The contractor is ALI S.c.a.r.l., and the study team includes the University of ...