University of Oulu

Palmroth, M., Praks, J., Vainio, R., Janhunen, P., Kilpua, E. K. J., Ganushkina, N. Yu., et al. (2019). FORESAIL‐1 CubeSat mission to measure radiation belt losses and demonstrate deorbiting. Journal of Geophysical Research: Space Physics, 124, 5783– 5799.

FORESAIL‐1 CubeSat mission to measure radiation belt losses and demonstrate deorbiting

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Author: Palmroth, M.1,2; Praks, J.3; Vainio, R.4;
Organizations: 1Department of Physics, University of Helsinki, Helsinki, Finland
2Finnish Meteorological Institute, Space and Earth Observation Centre, Helsinki, Finland
3School of Electrical Engineering, Aalto University, Espoo, Finland
4Department of Physics and Astronomy, University of Turku, Turku, Finland
5Space Climate Research Unit, University of Oulu, Oulu, Finland
6Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA
7Department of Future Technologies, University of Turku, Turku, Finland
8Sodankylä Geophysical Observatory (Oulu Unit), University of Oulu, Oulu, Finland
9Tartu Observatory, University of Tartu, Tõravere, Estonia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.9 MB)
Persistent link:
Language: English
Published: American Geophysical Union, 2019
Publish Date: 2019-11-21


Today, the near‐Earth space is facing a paradigm change as the number of new spacecraft is literally skyrocketing. Increasing numbers of small satellites threaten the sustainable use of space, as without removal, space debris will eventually make certain critical orbits unusable. A central factor affecting small spacecraft health and leading to debris is the radiation environment, which is unpredictable due to an incomplete understanding of the near‐Earth radiation environment itself and its variability driven by the solar wind and outer magnetosphere. This paper presents the FORESAIL‐1 nanosatellite mission, having two scientific and one technological objectives. The first scientific objective is to measure the energy and flux of energetic particle loss to the atmosphere with a representative energy and pitch angle resolution over a wide range of magnetic local times. To pave the way to novel model‐in situ data comparisons, we also show preliminary results on precipitating electron fluxes obtained with the new global hybrid‐Vlasov simulation Vlasiator. The second scientific objective of the FORESAIL‐1 mission is to measure energetic neutral atoms of solar origin. The solar energetic neutral atom flux has the potential to contribute importantly to the knowledge of solar eruption energy budget estimations. The technological objective is to demonstrate a satellite deorbiting technology, and for the first time, make an orbit maneuver with a propellantless nanosatellite. FORESAIL‐1 will demonstrate the potential for nanosatellites to make important scientific contributions as well as promote the sustainable utilization of space by using a cost‐efficient deorbiting technology.

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Series: Journal of geophysical research. Space physics
ISSN: 2169-9380
ISSN-E: 2169-9402
ISSN-L: 2169-9380
Volume: 124
Issue: 7
Pages: 5783 - 5799
DOI: 10.1029/2018JA026354
Type of Publication: A1 Journal article – refereed
Field of Science: 115 Astronomy and space science
Funding: The Finnish Centre of Excellence in Research of Sustainable Space, building, and launching three FORESAIL missions is funded through the Academy of Finland with grants 312351, 312390, 312358, 312357, and 312356. We acknowledge the European Research Council for starting grant 200141‐QuESpace, with which Vlasiator was developed, and Consolidator grant 682068‐PRESTISSIMO awarded to further develop Vlasiator and use it for scientific investigations. We gratefully also acknowledge the Academy of Finland (grants 138599, 267144, 309937, and 309939). We acknowledge the CSC–IT Center for Science Grand Challenge grant for 2018, with which the Vlasiator simulation run was carried out.
Academy of Finland Grant Number: 312351
Detailed Information: 312351 (Academy of Finland Funding decision)
312390 (Academy of Finland Funding decision)
312358 (Academy of Finland Funding decision)
312357 (Academy of Finland Funding decision)
312356 (Academy of Finland Funding decision)
138599 (Academy of Finland Funding decision)
267144 (Academy of Finland Funding decision)
309937 (Academy of Finland Funding decision)
309939 (Academy of Finland Funding decision)
Copyright information: © 2019 American Geophysical Union. All Rights Reserved. Published in this repository with the kind permission of the publisher.