Daedalus : a low-flying spacecraft for in situ exploration of the lower thermosphere-ionosphere

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Sarris, T E, Talaat, E R, Palmroth, M, Dandouras, I, Armandillo, E, Kervalishvili, G, Buchert, S, Tourgaidis, S, Malaspina, D M, Jaynes, A N, Paschalidis, N, Sample, J, Halekas, J, Doornbos, E, Lappas, V, Jorgensen, T M, Stolle, C, Clilverd, M, Wu, Q, Sandberg, I, Pirnaris, P & Aikio, A 2020, ' Daedalus : a low-flying spacecraft for in situ exploration of the lower thermosphere-ionosphere ', Geoscientific Instrumentation, Methods and Data Systems, vol. 9, no. 1, pp. 153-191 . https://doi.org/10.5194/gi-9-153-2020

Title: Daedalus : a low-flying spacecraft for in situ exploration of the lower thermosphere-ionosphere
Author: Sarris, Theodoros E.; Talaat, Elsayed R.; Palmroth, Minna; Dandouras, Iannis; Armandillo, Errico; Kervalishvili, Guram; Buchert, Stephan; Tourgaidis, Stylianos; Malaspina, David M.; Jaynes, Allison N.; Paschalidis, Nikolaos; Sample, John; Halekas, Jasper; Doornbos, Eelco; Lappas, Vaios; Jorgensen, Therese Moretto; Stolle, Claudia; Clilverd, Mark; Wu, Qian; Sandberg, Ingmar; Pirnaris, Panagiotis; Aikio, Anita
Contributor organization: Department of Physics
Space Physics Research Group
Date: 2020-04-22
Language: eng
Number of pages: 39
Belongs to series: Geoscientific Instrumentation, Methods and Data Systems
ISSN: 2193-0856
DOI: https://doi.org/10.5194/gi-9-153-2020
URI: http://hdl.handle.net/10138/315023
Abstract: The Daedalus mission has been proposed to the European Space Agency (ESA) in response to the call for ideas for the Earth Observation program's 10th Earth Explorer. It was selected in 2018 as one of three candidates for a phase-0 feasibility study. The goal of the mission is to quantify the key electrodynamic processes that determine the structure and composition of the upper atmosphere, the gateway between the Earth's atmosphere and space. An innovative preliminary mission design allows Daedalus to access electrodynamics processes down to altitudes of 150 km and below. Daedalus will perform in situ measurements of plasma density and temperature, ion drift, neutral density and wind, ion and neutral composition, electric and magnetic fields, and precipitating particles. These measurements will unambiguously quantify the amount of energy deposited in the upper atmosphere during active and quiet geomagnetic times via Joule heating and energetic particle precipitation, estimates of which currently vary by orders of magnitude between models and observation methods. An innovation of the Daedalus preliminary mission concept is that it includes the release of subsatellites at low altitudes: combined with the main spacecraft, these subsatellites will provide multipoint measurements throughout the lower thermosphereionosphere (LTI) region, down to altitudes below 120 km, in the heart of the most under-explored region in the Earth's atmosphere. This paper describes Daedalus as originally proposed to the ESA.
114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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