Now showing items 1-20 of 34

    • 3M en pantalla (mitos y mentiras sobre metales en pantalla) 

      Salán Ballesteros, Maria Núria; Montalà Guitart, Francesc; Sureda Anfres, Miquel (Sociedad Española de Materiales, 2020-05)
      Article
      Open Access
      Los metales han formado parte de la evolución de la humanidad desde la antigüedad. Han sido objeto de culto, por escasos y exclusivos, y han sido la clave del desarrollo de armas, para, progresivamente, formar parte de los ...
    • A Review and Gap Analysis of Exploiting Aerodynamic Forces as a Means to Control Satellite Formation Flight 

      Traub, Constantin; Romano, F.; Binder, Tilman; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (2018)
      Conference report
      Open Access
      Using several small, unconnected satellites flying in formation rather than a single monolithic satellite has many advantages. As an example, separate optical systems can be combined to function as a single larger (synthetic) ...
    • A review of gas-surface interaction models for orbital aerodynamics applications 

      Livadiotti, Sabrina; Crisp, Nicholas H.; Roberts, Peter C.E; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (2020-11)
      Article
      Restricted access - publisher's policy
      Renewed interest in Very Low Earth Orbits (VLEO) - i.e. altitudes below 450 km - has led to an increased demand for accurate environment characterisation and aerodynamic force prediction. While the former requires knowledge ...
    • Advances on the Inductive Plasma Thruster Design for an Atmosphere-Breathing EP System 

      Romano, Francesco; Herdrichd, Georg H.; Boxberger, Adam; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Sureda Anfres, Miquel (International Astronautical Federation, 2018)
      Conference report
      Open Access
      Challenging space mission scenarios include those in very low Earth orbits, where the atmosphere creates significant drag to the S/C and forces their orbit to an early decay. For drag compensation, propulsion systems are ...
    • 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 ...
    • Analytic Stability Maps of Unknown Exoplanet Companions for Imaging Prioritization 

      Gascón Álvarez, Carlos; Savransky, Dmitry; Sureda Anfres, Miquel (2020-08)
      Article
      Restricted access - publisher's policy
      Identifying which systems are more likely to host an imageable planet can play an important role in the construction of an optimized target list for future direct imaging missions, such as the planned Coronagraph Instrument ...
    • Attitude control for satellites flying in VLEO using aerodynamic surfaces 

      Cañas Muñoz, Valentin; González, David; Becedas, Jonathan; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Sureda Anfres, Miquel; Nieto, Miriam; Muñoz, Candia (British Interplanetary Society, 2020)
      Article
      Restricted access - publisher's policy
      This paper analyses the use of aerodynamic control surfaces, whether passive or active, in order to carry out very low Earth orbit (VLEO) attitude maneuver operations. Flying a satellite in a very low Earth orbit with an ...
    • ³Cat-4 Mission: a 1-unit cubesat for earth observation with a L-band radiometer and a GNSS-reflectometer using software defined radio 

      Ruiz De Azúa Ortega, Juan Adrián; Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Badia Ballús, Marc; Llaveria Godoy, David; Diez Garcia, Carlos; Aguilella, Andrea; Pérez Portero, Adrián; Milián, O.; Sobrino Hidalgo, Marco; Navarro Trastoy, Ángel; Lleó, H.; Sureda Anfres, Miquel; Soria Guerrero, Manel; Calveras Augé, Anna M.; Camps Carmona, Adriano José (2019)
      Conference lecture
      Restricted access - publisher's policy
      Global Navigation Satellite System Reflectometry and L-band microwave radiometry have been used for soil moisture, biomass, and cryosphere studies. Combining both technologies in a low-power and cost-effective solution ...
    • Concepts and applications of aerodynamic attitude and orbital control for spacecraft in very low earth orbit 

      Livadiotti, Sabrina; Crisp, Nicholas H.; Roberts, Peter C.E; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2019)
      Conference report
      Restricted access - publisher's policy
      Spacecraft operations below 450km, namely Very Low Earth Orbit (VLEO), can offer significant advantages over traditional low Earth orbits, for example enhanced ground resolution for Earth observation, improved communications ...
    • Demonstration of aerodynamic control manoeuvres in very low earth orbit using SOAR (Satellite for Orbital Aerodynamics Research) 

      Crisp, Nicholas H.; Livadiotti, Sabrina; Roberts, Peter C.E; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (International Astronautical Federation, 2019)
      Conference report
      Restricted access - publisher's policy
      Aerodynamic forces have often been proposedas a possible means to perform a variety of different attitude and orbit control manoeuvres in very low Earth orbits including pointing control, constellation and formation ...
    • Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat 

      Fernandez Capon, Lara Pilar; Sobrino Hidalgo, Marco; Milian, Oriol; Aguilella, Andrea; Solanellas Bofarull, Arnau; Badia Ballús, Marc; Muñoz Martin, Joan Francesc; Ruiz De Azúa Ortega, Juan Adrián; Sureda Anfres, Miquel; Camps Carmona, Adriano José (2020-09-08)
      Article
      Restricted access - publisher's policy
      Recently, there is a renewed interest in Earth Observation (EO) of the cryosphere as a proxy of global warming, soil moisture for agriculture and desertification studies, and biomass for carbon storage. Global Navigation ...
    • 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 ...
    • Design and Testing of a Helix Antenna Deployment System for a 1U CubeSat 

      Sureda Anfres, Miquel; Sobrino Hidalgo, Marco; Millán, Oriol; Aguilella, Andrea; Solanellas Bofarull, Arnau; Badia Ballús, Marc; Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021-05)
      Article
      Open Access
      CubeSats have revolutionized Earth Observation and space science, although their small size severely restricts satellite performance and payload. Antenna deployment from a stowed configuration in these small-satellites ...
    • 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 ...
    • Earth Observation Technologies: Low-End-Market Disruptive Innovation 

      Rodríguez Donaire, Silvia; Sureda Anfres, Miquel; García-Almiñana, Daniel; Sierra, Eloi (IntechOpen, 2020-07)
      Part of book or chapter of book
      Open Access
      After decades of traditional space businesses, the space paradigm is changing. New approaches to more efficient missions in terms of costs, design, and manufacturing processes are fostered. For instance, placing big ...
    • Effects of applied magnetic field on IPG6-S, test-bed for an ABEP-based inductive plasma thruster (IPT) 

      Romano, Francesco; Herdrich, Georg; Binder, Tilman; García-Almiñana, Daniel; Rodríguez Donaire, Silvia; Sureda Anfres, Miquel (Association Aéronautique et Astronautique de France, 2018)
      Conference report
      Open Access
      An atmosphere-breathing electric propulsion system (ABEP) captures the residual atmosphere of a planet and uses it as propellant for an electric thruster to counteract the drag. The system would theoretically allow orbiting ...
    • El ingenio (in)visible: Desde las pioneras en ingeniería hasta la actualidad 

      Salán Ballesteros, Maria Núria; Ferrer Balas, Dídac; Amante García, Beatriz; Sureda Anfres, Miquel (OmniaScience, 2019)
      Part of book or chapter of book
      Open Access
      En la actualidad, hombres y mujeres accedemos a la formación en general, y a la universitaria en particular, aparentemente en paridad. Pero no en todos los ámbitos. Las titulaciones del ámbito de la tecnología muestran ...
    • 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 ...
    • High-throughput microcapillary pump with efficient integrated low aspect ratio micropillars 

      Madadi, Hojjat; Casals Terré, Jasmina; Castilla López, Roberto; Sureda Anfres, Miquel (2013-12)
      Article
      Restricted access - publisher's policy
      Prediction and reduction of pressure drop and resistance flow in micropillar arrays are important for the design of microfluidic circuits used in different lab-on-a-chip and biomedical applications. In this work, a diamond ...
    • In situ particle zeta potential evaluation in electroosmotic flows from time-resolved microPIV measurements 

      Sureda Anfres, Miquel; Miller, Andrew; Diez, F. J. (2012-09-10)
      Article
      Restricted access - publisher's policy
      A time-resolved microPIV method is presented to measure in an EOF the particles zeta potential in situ during the transient start-up of a microdevice. The method resolves the electrophoretic velocity of fluoro-spheres used ...