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Mensaje: <blockquote data-quote="grestucc" data-source="post: 1655159" data-attributes="member: 12218">El mejor artículo sobre los satélites ARSAT que se haya publicado (Está en Inglés).Es muy extenso, así que subí la parte donde habla de tres experimentos que volarán al espacio a bordo del ARSAT-1 bajo la denominación "Arreglo de Cargas Tecnológicas Argentinas (ACTA)".########################################ARSAT-1: ARGENTINA TO COMMUNICATE ITS HEIGHTENED SPACE AMBITIONS<a href="https://argentinaenelespacio.blogspot.com">https://argentinaenelespacio.blogspot.com</a>ACTA, the Science Opportunity of the ARSAT Program:In 2008, it was decided to utilize space on the spacecraft with scientific and technological experiments – initially only set to be included on future satellites in the family.Since the very foundations of the ArSat program was to develop the industrial and technological capabilities for GEO satellites, it was classed as a priceless opportunity to deepen the understanding of geosynchronous environment and to qualify and demonstrate actual material and subsystems performance.While the volume budget was relatively generous – weight, power and processing budget were limited. Most importantly, the experiments would have to minimize the risk to the primary mission. Thus, magnetic, electric and radiation interactions with the rest of the satellite, as well as integration impact, was to be reduced as much as possible.After consultation with national and foreign researchers, by 2009 CONICET (the National Council for Scientific and Technical Research) provided grants for three experiments to fly on ARSAT-1 under the ACTA (acronym in Spanish for Argentine Technological Payload Array) project.The experiments chosen were a space radiation experiment (MARE), an atmospheric fluorescence measure from geostationary orbit (FOG) and a study for degradation in the geostationary orbit environment of indigenous solar cells.MARE (Spanish acronym for Argentine Monitor of Space Radiation) is an instrument designed to measure charged particles (electrons, protons and alphas) covering the wide range of integrated fluxes, from 0MeV to 100MeV. This will enable a better understanding of the GEO environment, with the actual counting for space based event like solar flares.The experiment is composed of three detectors, to cover the whole range of energies. The LEEP (Low Energy Electron and Proton) covers the 40keV to 5MeV, a range mainly composed of low energy electrons. The PT (Particle Telescope) can measure protons with energies higher than 400keV. And the HEP (High Energy Proton), that can measure protons with energies higher than 40MeV.FOG (Spanish acronym for Fluorescence from Geostationary Orbit) is a 15cm UV telescope, weights 8.5kg, consumes as little as 7W, and measures 24 cm x 28 cm x 29 cm. It includes 4 x multi-anode photomultiplier tube (MAPMT) for UV detection.Argentina is home of one of the most important UV observatories in the world, the Pierre Auger Observatory. With its 3000 km squared close to Malargüe, in the south of the Mendoza Province, Argentina – the largest cosmic ray observatory.It combines the two techniques of detection: an array of 1600 surface detector stations on a triangular grid, spaced by 1500 m, that sample the lateral distribution of UHECR cascades, and 24 fluorescence telescopes that observe at night the longitudinal development of these cascades.However, not all UV can be seen from the ground, and observing the UV events from space, without atmospheric dilution, allows for calibration of the ground data. This instruments gives new tools for a branch of physics in which the country already has leading capabilities.The third experiment came from the very conception of the ArSat series a national capabilities development, and is mostly a technological demonstrator.The main issues of degradation in space solar cells is the effect of radiation, and since the CNEA (acronym for the National Atomic Energy Commission) had all the equipment to study and simulate the radiation environment, it ended up developing the solar panels for the SAC-D mission, and the SAOCOM radar missions.However, the geostationary environment was unchartered territory for them and this not being development satellites, like the SAC-A/B/C series, it was decided to outsource the solar panels for the first satellite. Yet the opportunity was not lost to use experimental panels that would characterize and validate in-situ the CNEA technologies.Finally, the three instruments transmit their information to the ACTA on board computer (ATCA-OBC) through RS-422 serial interfaces.This computer manages each experiment and works as an abstraction layer for the general ArSat SPU, minimizing the integration impact.</blockquote>

Verificación: Guerra desarrollada entre Argentina y el Reino Unido en 1982