Enviaments recents

  • 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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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)
    Text en actes de congrés
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    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)
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    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)
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    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 ...
  • 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)
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    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)
    Text en actes de congrés
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    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 ...
  • 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)
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    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)
    Comunicació de congrés
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    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 ...
  • Inductive Plasma Thruster (IPT) for an Atmosphere-Breathing Electric Propulsion System: design and set in operation 

    Romano, Francesco; Herdrich, Georg; Roberts, Peter C.E; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (2019)
    Text en actes de congrés
    Accés obert
    Challenging space missions include those at very low orbits, where the atmosphere is source of significant drag on a satellite. Therefore, an efficient dragcompensation propulsion system is required to extend the mission ...
  • RF Helicon-based Plasma Thruster (IPT): Design, Set-up, and First Ignition 

    Romano, Francesco; Chan, Yung-An; Herdrich, Georg; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel; García Berenguer, Marina (International Astronautical Federation, 2019)
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    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)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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 ...

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