Ponències/Comunicacions de congressos

Recent Submissions

  • Active flow control of an aircraft in full stall 

    Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Lozano-Durán, Adrian (2021)
    Conference report
    Open Access
    The aerodynamic performance of active flow control on wings using synthetic jets with zero net-mass flow is investigated. The study is conducted via wall-modeled large-eddy simulations using a finiteelement-based solver. ...

  • DISCOVERER: Final results and outcomes 

    Roberts, Peter C.E; Crisp, Nicholas H.; Edmonson, Steve; Arcos, Antonio; Herdrich, Georg; Skalden, Jonathan; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Macario Rojas, Alejandro; Smith, Katharine L.; Sureda Anfres, Miquel (International Astronautical Federation, 2022)
    Conference report
    Restricted access - publisher's policy
    The DISCOVERER project commenced in 2017 with the aim to advance the development of key technologies to enable the commercially viable, sustained operation of satellites in very low Earth orbits (VLEO). Funded by the ...

  • Platform and system design study of a VLEO satellite platform using the IRS RF Helicon-based Plasma Thruster 

    Herdrich, Georg; Papavramidis, Konstantinos; Maier, Philipp; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2022)
    Conference report
    Restricted access - publisher's policy
    To achieve a feasible lifetime of several years, most satellites are deployed in orbits higher than 400 km. Drag of residual atmosphere causes a slow orbit decay, resulting in the deorbit of the spacecraft. However, e.g. ...

  • Very low Earth orbit constellations for Earth observation 

    Crisp, Nicholas H.; McGrath, Ciara N.; Roberts, Peter C.E; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2022)
    Conference report
    Restricted access - publisher's policy
    Very Low Earth Orbits (VLEOs), those below 450 km, present a number of benefits and challenges for the development and operation of Earth observation spacecraft at both the system and mission level. This paper examines the ...

  • Experimental Results from the Satellite for Orbital Aerodynamics Research (SOAR) Mission 

    Crisp, Nicholas H.; Macario Rojas, Alejandro; Roberts, Peter C.E; García-Almiñana, Daniel; Sureda Anfres, Miquel; Rodríguez Donaire, Silvia (International Astronautical Federation, 2022)
    Conference report
    Restricted access - publisher's policy
    The Satellite for Orbital Aerodynamics Research (SOAR) is a 3U CubeSat that has been designed to investigate the aerodynamic performance of different materials and perform demonstrations of aerodynamic attitude control ...

  • Optimization of the thermal and fluid dynamic behaviour of air curtains: analysis of the plenum by means of LES 

    Giráldez García, Héctor; Pérez Segarra, Carlos David; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (2012)
    Conference report
    Restricted access - publisher's policy
    The improvement procedure of an air curtain unit (ACU) is described in the present study. The procedure is based on Large Eddy Simulations (LES) and Hot Wire Anemometry (HWA) measurements. Initially, the flow provided by ...

  • Launch, Operations, and First Experimental Results of the Satellite for Orbital Aerodynamics Research (SOAR) 

    Crisp, Nicholas H.; Macario Rojas, Alejandro; Roberts, Peter C.E; Edmonson, Steve; Haigh, Sarah J.; Holmes, Brandon E.A.; Livadiotti, Sabrina; Oiko, Vitor; Smith, Katharine L.; Sinpetru, Luciana A.; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2021)
    Conference report
    Restricted access - publisher's policy
    The Satellite for Orbital Aerodynamics Research (SOAR) is a 3U CubeSat that has been designed to investigate the aerodynamic performance of different materials at low orbital altitudes. The spacecraft has been developed ...

  • Early Results from the DISCOVERER Project 

    Roberts, Peter C.E; Crisp, Nicholas H.; Oiko, Vitor; Edmonson, Steve; Romano, Francesco; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Haigh, Sarah J.; Holmes, Brandon E.A.; Livadiotti, Sabrina; Sureda Anfres, Miquel (International Astronautical Federation, 2021)
    Conference report
    Restricted access - publisher's policy
    The use of very low Earth orbits (VLEO), for communications and remote sensing satellites, offers a number of significant payload and platform benefits. Imaging from these altitudes allows higher resolution or smaller ...

  • A data-driven wall-shear stress model for LES using gradient boosted decision trees 

    Radhakrishnan, Sarath; Adu Gyamfi, Lawrence; Miró Jané, Arnau; Font García, Bernat; Calafell Sandiumenge, Joan; Lehmkuhl Barba, Oriol (Springer Nature, 2021)
    Conference report
    Open Access
    With the recent advances in machine learning, data-driven strategies could augment wall modeling in large eddy simulation (LES). In this work, a wall model based on gradient boosted decision trees is presented. The model ...

  • Integrating the Science Opportunity Analyzer with a reusable opportunity search framework 

    Llopis, Marcel; Franch Gutiérrez, Javier; Soria Guerrero, Manel (American Institute of Aeronautics and Astronautics (AIAA), 2020)
    Conference report
    Restricted access - publisher's policy
    In our interactions with the Science Opportunity Analyzer (SOA) software, we recognized how its ability to search for geometric events in space is a need for robotic space missions in general. To satisfy this need, we ...

  • Aerodynamic Technologies for Earth Observation Missions in Very Low earth Orbit 

    Becedas, Jonathan; González, Gerardo; Domínguez, Rosa María; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (2018)
    Conference report
    Restricted access - publisher's policy
    Flying at VLEO has several advantages such as the increase of the resolution of images recorded by optical instruments, the increase of geospatial position accuracy, the improvement of the signal to noise ratio and the ...

  • Design and development of a hyper-thermal atomic oxygen wind tunnel facility 

    Oiko, Vitor; Roberts, Peter C.E; Edmonson, Steve; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (Centre National d'Études Spatiales (CNES), 2018)
    Conference lecture
    Restricted access - publisher's policy
    A hyper-thermal orbital aerodynamics test facility is described. The Rarefied Orbital Aerodynamics Research facility(ROAR)is a dedicated apparatus designedto simulate the atmospheric flow in very low Earth orbits(VLEO) to ...

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