Persona: Garranzo, Daniel
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Instituto Nacional de Técnica Aeroespacial
El Instituto Nacional de Técnica Aeroespacial es el Organismo Público de Investigación (OPI) dependiente del Ministerio de Defensa. Además de realizar actividades de investigación científica y de desarrollo de sistemas y prototipos en su ámbito de conocimiento, presta servicios tecnológicos a empresas, universidades e instituciones.
El INTA está especializado en la investigación y el desarrollo tecnológico, de carácter dual, en los ámbitos de la Aeronáutica, Espacio, Hidrodinámica, Seguridad y Defensa.
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Garranzo
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Daniel
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Publicación Restringido Fiber Bragg gratings for optical sensing (FIBOS) for an aerospace application(SPIE Optical Engineering Applications, 2010-09-09) López Heredero, Raquel; Frövel, Malte; Laguna, H.; Anderson, A.; Garranzo, Daniel; Belenguer Dávila, T.; Frövel, M. [0000-0001-9447-4036]; López Heredero, R. [0000-0002-2197-8388]FIBOS, as one of the payloads of a picosatellite called OPTOS, will be used to measure temperature during the mission with Fiber Bragg Gratings. Description and calibration of FIBOS are presented.Publicación Acceso Abierto The Polarimetric and Helioseismic Imager on Solar Orbiter(EDP Sciences, 2020-10) Solanki, S. K.; Álvarez-Herrrero, Alberto; Barandiarán, J.; Bastide, L. ; Campuzano, C.; Cebollero Vidriales, Maria; Dávila, B.; Fernández Medina, A.; García Parejo, Pilar; Garranzo, Daniel; Laguna, H.; Martín, J. A.; Navarro, R.; Nuñez Peral, A.; Royo, M.; Sánchez, A.; Silva López, M.; Vera Trallero, Isabel; Villanueva, J.; Zouganelis, I.; Deutsches Zentrum für Luft- und Raumfahrt (DLR); Centre National D'Etudes Spatiales (CNES); Centros de Excelencia Severo Ochoa, INSTITUTO DE ASTROFISICA DE ANDALUCIA (IAA), SEV-2017-0709This paper describes the Polarimetric and Helioseismic Imager on the Solar Orbiter mission (SO/PHI), the first magnetograph and helioseismology instrument to observe the Sun from outside the Sun-Earth line. It is the key instrument meant to address the top-level science question: How does the solar dynamo work and drive connections between the Sun and the heliosphere? SO/PHI will also play an important role in answering the other top-level science questions of Solar Orbiter, while hosting the potential of a rich return in further science. Methods. SO/PHI measures the Zeeman effect and the Doppler shift in the Fe※ I 617.3 nm spectral line. To this end, the instrument carries out narrow-band imaging spectro-polarimetry using a tunable LiNbO3 Fabry-Perot etalon, while the polarisation modulation is done with liquid crystal variable retarders. The line and the nearby continuum are sampled at six wavelength points and the data are recorded by a 2k × 2k CMOS detector. To save valuable telemetry, the raw data are reduced on board, including being inverted under the assumption of a Milne-Eddington atmosphere, although simpler reduction methods are also available on board. SO/PHI is composed of two telescopes; one, the Full Disc Telescope, covers the full solar disc at all phases of the orbit, while the other, the High Resolution Telescope, can resolve structures as small as 200 km on the Sun at closest perihelion. The high heat load generated through proximity to the Sun is greatly reduced by the multilayer-coated entrance windows to the two telescopes that allow less than 4% of the total sunlight to enter the instrument, most of it in a narrow wavelength band around the chosen spectral line. Results. SO/PHI was designed and built by a consortium having partners in Germany, Spain, and France. The flight model was delivered to Airbus Defence and Space, Stevenage, and successfully integrated into the Solar Orbiter spacecraft. A number of innovations were introduced compared with earlier space-based spectropolarimeters, thus allowing SO/PHI to fit into the tight mass, volume, power and telemetry budgets provided by the Solar Orbiter spacecraft and to meet the (e.g. thermal) challenges posed by the mission's highly elliptical orbit.Publicación Acceso Abierto Feasibility Design of MiLi, a Miniaturized Lidar for Mars Observation(IEEE Xplore, 2024-06-04) Scaccabarozzi, Diego; Potemkin, Kirill; Saggin, Bortolino; Vieira, Elimar; Giovanni Corti, Marco; Martina, Chiara; Appiani, Andrea; Martín-Ortega, Alberto; Arruego, Ignacio; Jiménez Martín, Juan José; González Fernández, Luis Miguel; Sanz Palomino, Miguel; Garranzo, Daniel; García-Moreno, Andrea; Fernandez Rodriguez, Marianela; Muñoz Rebate, Nacho; Braukhane, Andy; Quantius, DominikThis work describes the feasibility design of MiLi, a miniaturized lidar under development to operate on Mars. Atmospheric lidars could be employed to study atmospheric dust and ice-based clouds, but typically those types of instruments exhibit considerable mass and are characterized by high power consumption, so they cannot be easily retrofitted aboard landers. The MiLi project, funded by the European Union, aims to develop a compact, lightweight lidar for detailed atmospheric analysis of the Red Planet. The development of this instrument, which seeks to overcome the typical limitations of lidars, may increase the availability of this type of remote sensing technology in the context of planetary missions and wants to deliver precise characterization of Martian atmospheric dust and ice-based clouds. The feasibility study encompasses the design requirements, material selection, and evaluation of different design configurations to ensure the instrument's performance and survival in extreme conditions, posing the basis for the development of the instrument's mechanical architecture. Overall design procedure was based on the trade-off between the mass budget and the instrument performances. Assessment of the mechanical resistance was performed by using quasi-static and modal numerical analyses.
