Ariel [1] is the M4 mission of the ESA’s Cosmic Vision Program 2015-2025, whose aim is to characterize by lowresolution transit spectroscopy the atmospheres of over one thousand warm and hot exoplanets orbiting nearby stars. The operational orbit of the spacecraft is baselined as a large amplitude halo orbit around the Sun-Earth L2 Lagrangian point, as it offers the possibility of long uninterrupted observations in a fairly stable radiative and thermo-mechanical environment. A direct escape injection with a single passage through the Earth radiation belts and no eclipses is foreseen. The space environment around Earth and L2 presents significant design challenges to all spacecraft, including the effects of interactions with Sun radiation and charged particles owning to the surrounding plasma environment, potentially leading to dielectrics charging and unwanted electrostatic discharge (ESD) phenomena endangering the Payload operations and its data integrity. Here, we present some preliminary simulations and analyses about the Ariel Payload dielectrics and semiconductors charging along the transfer orbit from launch to L2 included.
Preliminary surface charging analysis of Ariel payload dielectrics in early transfer orbit and L2-relevant space environment / Focardi, Mauro; Michelagnoli, Marianna; Noce, Vladimiro; Vela Nunez, Marina; Bolli, Pietro; Nesti, Renzo; Lorenzani, Andrea; Carbonaro, Luca; Del Vecchio Blanco, Carlo; Falcini, Gilberto; Tozzi, Andrea; Maria Di Giorgio, Anna; Galli, Emanuele; Farina, Maria; Giusi, Giovanni; John Liu, Scig('(e)); Venter, Mariet; Tommasi, Elisabetta; DE PERSIO, Fulvio; Salatti, Mario; Brienza, Daniele; Piazzolla, Raffaele; Morgante, Gianluca; Auricchio, Natalia; Pascale, Enzo; Naponiello, Luca; Redigonda, Gabriele; Pace, Emanuele; Preti, Giampaolo; Micela, Giuseppina; Malaguti, Giuseppe; Eccleston, Paul; Caldwell, Andrew; Bishop, Georgia; Desjonqueres, Lucile; Tinetti, Giovanna. - In: SPIE NEWSROOM. - ISSN 1818-2259. - (2022). (Intervento presentato al convegno Space Telescopes and Instrumentation 2022 tenutosi a Montréal, Québec, Canada) [10.1117/12.2628170].
Preliminary surface charging analysis of Ariel payload dielectrics in early transfer orbit and L2-relevant space environment
Fulvio De Persio;Daniele Brienza;Enzo Pascale;Luca Naponiello;Giovanna Tinetti
2022
Abstract
Ariel [1] is the M4 mission of the ESA’s Cosmic Vision Program 2015-2025, whose aim is to characterize by lowresolution transit spectroscopy the atmospheres of over one thousand warm and hot exoplanets orbiting nearby stars. The operational orbit of the spacecraft is baselined as a large amplitude halo orbit around the Sun-Earth L2 Lagrangian point, as it offers the possibility of long uninterrupted observations in a fairly stable radiative and thermo-mechanical environment. A direct escape injection with a single passage through the Earth radiation belts and no eclipses is foreseen. The space environment around Earth and L2 presents significant design challenges to all spacecraft, including the effects of interactions with Sun radiation and charged particles owning to the surrounding plasma environment, potentially leading to dielectrics charging and unwanted electrostatic discharge (ESD) phenomena endangering the Payload operations and its data integrity. Here, we present some preliminary simulations and analyses about the Ariel Payload dielectrics and semiconductors charging along the transfer orbit from launch to L2 included.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
