Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Jarmo Kivekäs"'
Publikováno v:
Aerospace, Vol 11, Iss 1, p 62 (2024)
A new method of producing robust multi-wire tethers for Coulomb drag applications was developed. The multi-wire structure required for redundancy against the micrometeoroid flux of the space environment is realised through the method of wire twist bo
Externí odkaz:
https://doaj.org/article/b78b9d268664440db8088c5bc839e005
Autor:
Esa Kallio, Ari‐Matti Harri, Olli Knuuttila, Riku Jarvinen, Kirsti Kauristie, Antti Kestilä, Jarmo Kivekäs, Petri Koskimaa, Juha‐Matti Lukkari, Noora Partamies, Jouni Rynö, Mikko Syrjäsuo
Publikováno v:
Journal of Geophysical Research: Space Physics. 128
Auroras can be regarded as the most fascinating manifestation of space weather and they are continuously observed by ground-based and, nowadays more and more, also by space-based measurements. Investigations of auroras and geospace comprise the main
Autor:
Petri Toivanen, Pekka Janhunen, Jarmo Kivekäs, Sean Haslam, Jouni Polkko, Iaroslav Iakubivskyi
Two 3-unit cubesats, FORESAIL-1 and ESTCube-2 soon to be launched (2022), both accommodate an electrostatic tether that can be charged to a high voltage with respect to the ambient ionospheric plasma in low-Earth orbit. The high voltage sheath around
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dededf3f93db676e63e06da343aae5a5
https://doi.org/10.5194/epsc2022-896
https://doi.org/10.5194/epsc2022-896
Coulomb drag propulsion taps momentum from a natural plasma stream to generate propellantless low-thrust propulsion for a spacecraft. The plasma is attached to by means of a long, thin, charged metallic tether. The tether's electrostatic field deflec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4224f9052ff158cdd67a5d92833fa0c7
https://doi.org/10.5194/epsc2021-96
https://doi.org/10.5194/epsc2021-96
Autor:
Maria Genzer, Harri Haukka, Maria Hieta, Antti Kestilä, Ignacio Arruego, Victor Apestigue, Alejandro Gonzalo Melchor, Cristina Ortega, Carmen Camañes, Manuel Dominiguez-Pumar, Jose Antonio Rodriquez Manfredi, Servando Espejo, Héctor Guerrero, Matti Palin, Jarmo Kivekäs, Petri Koskimaa, Iina Jaakonaho, Matias Meskanen, Matti Talvioja
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c86d7307b0a1af1d1b709183ed55b7eb
https://doi.org/10.5194/epsc2021-69
https://doi.org/10.5194/epsc2021-69
Autor:
Maria Hieta, Maria Genzer, Harri Haukka, Antti Kestilä, Ignacio Arruego, Victor Apéstigue, Javier Martínez, Manuel Reina, Christina Ortega, Carmen Camañes, Iñigo Sard, Manuel Dominguez, Servando Espejo, Hector Guerrero, Jose Antonio Rodríguez Manfredi, Matti Talvioja, Jarmo Kivekäs, Petri Koskimaa, Matti Palin
Introduction: Simultaneous, distributed in situ measurements would benefit scientific investigations of both Mars and Moon. On Mars the global and related local phenomena such as atmospheric circulation patterns, boundary layer phenomena, water, dust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9fb25d647a1dee3c3b3b12e164054a7
https://doi.org/10.5194/epsc2020-858
https://doi.org/10.5194/epsc2020-858
Autor:
Maria Genzer, Maria Hieta, Antti Kestilä, Harri Haukka, Ignacio Arruego, Victor Apéstigue, Jose Antonio Manfredi, Cristina Ortega, Manuel Dominiguez, Servando Espejo, Héctor Guerrero, Matti Palin, Jarmo Kivekäs, Petri Koskimaa, Matti Talvioja
MiniPINS is an ESA study led by the Finnish Meteorological Institute to develop and prototype miniaturised surface sensor packages (SSPs) for Mars and the Moon. The study aims at miniaturising the scientific sensors and subsystems, as well as identif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9de58c163d0bae2795b1138b4f48c3ef
https://doi.org/10.5194/egusphere-egu2020-13250
https://doi.org/10.5194/egusphere-egu2020-13250