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  • RF Helicon-based Plasma Thruster (IPT): Design, Set-up, and First Ignition 

    Romano, Francesco; Chan, Y. A.; Herdrich, Georg; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel; García Berenguer, Marina (International Astronautical Federation, 2019)
    Conference report
    Restricted access - publisher's policy
    To extend missions lifetime at very low altitudes, an efficient propulsion system is requiredto compensate for aerodynamic drag. One solution is Atmosphere-Breathing Electric Propulsion (ABEP). It collects atmospheric ...
  • Ground-based experimental facility for orbital aerodynamics research: design, construction and characterisation 

    Oiko, Vitor; Roberts, Peter C.E; Macario Rojas, Alejandro; García-Almiñana, Daniel; García Berenguer, Marina; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2020)
    Conference lecture
    Restricted access - publisher's policy
    In very low Earth orbits (VLEO), below 450 km altitude, the aerodynamic properties of satellites are primarily determined by the flow regime, free molecular flow, and the interaction of atomic oxygen with the surfacesof ...
  • DISCOVERER: Developing Technologies to Enable Commercial Satellite Operations in Very Low Earth Orbit 

    Roberts, Peter C.E; Crisp, Nicholas H.; Edmonson, Steve; García-Almiñana, Daniel; García Berenguer, Marina; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2020)
    Conference lecture
    Restricted access - publisher's policy
    The DISCOVERER project is developing technologies to enable commercially-viablesustained-operation of satellites in very low Earth orbitsfor communications and remote sensing applications. Operatingcloser to the surface ...
  • Investigation of Novel Drag-Reducing and Atomic Oxygen Resistant Materials in Very Low Earth Orbit using SOAR (Satellite for Orbital Aerodynamics Research) 

    Crisp, Nicholas H.; Macario Rojas, Alejandro; Roberts, Peter C.E; García-Almiñana, Daniel; García Berenguer, Marina; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2020)
    Conference report
    Restricted access - publisher's policy
    Interest in operating spacecraft in very low Earth orbits (VLEO), those below approximately 450 km, is growing due to the numerous benefits offered by reducing altitude. For remote sensing and Earth observation applications, ...
  • Commissioning of a beam screen test bench experiment with a future circular hadron collider type synchrotron radiation beam 

    González, Luis; Gil-Costa, Miguel; Baglin, Vincent; Chiggiato, Paolo; Garion, Cedric; Kersevan, Roberto; Casalbuoni, Sara; Huttel, Edward; Bellafont Peralta, Ignasi; Pérez, Francis (American Physical Society (APS), 2019-08-23)
    Article
    Open Access
    Coping with synchrotron radiation (SR) that originated at superconducting bending magnets is one of the major challenges in the design of the vacuum beam pipes of hadron colliders. In the case of the Future Circular hadron ...
  • Transposition of the mechanical behavior from model to prototype of Francis turbines 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard; Gomes, João; Avellan, François (Elsevier, 2020-06-01)
    Article
    Restricted access - publisher's policy
    Hydropower is nowadays essential for balancing the electrical grid providing flexibility and fast response. The role of hydraulic turbines has changed from working at their Best Efficiency Point (BEP) to work in the whole ...
  • Development of AM technologies for metals in the sector of medical implants 

    Buj Corral, Irene; Tejo Otero, Aitor; Fenollosa i Artés, Felip (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-28)
    Article
    Open Access
    Additive manufacturing (AM) processes have undergone significant progress in recent years, having been implemented in sectors as diverse as automotive, aerospace, electrical component manufacturing, etc. In the medical ...
  • Optimal postponement in supply chain network design under uncertainty: an application for additive manufacturing 

    Ramón Lumbierres, Daniel Jacobo; Heredia, F.-Javier (Francisco Javier); Minguella Canela, Joaquim; Muguruza Blanco, Asier (Taylor & Francis, 2020-06-17)
    Article
    Open Access
    This study presents a new two-stage stochastic programming decision model for assessing how to introduce some new manufacturing technology into any generic supply and distribution chain. It additionally determines the ...
  • Surface damaging of brass and steel pins when sliding over nitrided samples cut by finishing and roughing EDM conditions 

    Martynenko, Vitali; Martinez Krahmer, Daniel; Nápoles Alberro, Amelia; Cabo, Amado; Pérez, Daniela; Zayas Figueras, Enrique Ernesto; González Rojas, Hernan Alberto; Sánchez Egea, Antonio José (Multidisciplinary Digital Publishing Institute (MDPI), 2020-07-17)
    Article
    Open Access
    In the forging industry, surface quality and surface treatments of dies are crucial parameters to extend their life. These components are usually machined by milling or by Electrical Discharge Machining (EDM), and the final ...
  • Fatigue behavior of PLA-wood composite manufactured by fused filament fabrication 

    Travieso Rodriguez, Jose Antonio; Zandi, Mohammad Damous; Jerez Mesa, Ramón; Llumà Fuentes, Jordi (Elsevier, 2020-07-08)
    Article
    Open Access
    In this paper, the fatigue behavior of a polylactic acid-based composite reinforced with wood (trademarked as Timberfill) processed through fused filament fabrication is analyzed through rotating bending fatigue tests. ...
  • Topology optimization of thermal problems in a nonsmooth variational setting: closed-form optimality criteria 

    Yago Llamas, Daniel; Cante Terán, Juan Carlos; Lloberas Valls, Oriol; Oliver Olivella, Xavier (Springer, 2020-06)
    Article
    Restricted access - publisher's policy
    This paper extends the nonsmooth Relaxed Variational Approach (RVA) to topology optimization, proposed by the authors in a preceding work, to the solution of thermal optimization problems. First, the RVA topology optimization ...
  • Study of the manufacturing process effects of fused filament fabrication and injection molding on tensile properties of composite PLA-wood parts 

    Zandi, Mohammad Damous; Jerez Mesa, Ramón; Llumà Fuentes, Jordi; Jorba Peiró, Jordi; Travieso Rodriguez, Jose Antonio (2020-05-30)
    Article
    Restricted access - publisher's policy
    The present study evaluates the effects of manufacturing parameters on the tensile properties of a commercial composite material based upon polylactic acid (PLA) with wood fibers known as Timberfill. The specimens are built ...

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