Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat
Recently, there is a renewed interest in Earth Observation (EO) of the cryosphere as a proxy of global warming, soil moisture for agriculture and desertification studies, and biomass for carbon storage. Global Navigation Satellite System-Reflectometry (GNSS-R) and L-band microwave Radiometry have be...
| Autores: | , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/339661 |
| Acesso em linha: | https://hdl.handle.net/2117/339661 https://dx.doi.org/10.1016/j.actaastro.2020.09.005 |
| Access Level: | acceso abierto |
| Palavra-chave: | Satellites CubeSat Nanosatellite Helix Deployable Antenna Satèl·lits artificials Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
| id |
ES_bb409b18dc5098bfbe57c312e2d41f65 |
|---|---|
| oai_identifier_str |
oai:upcommons.upc.edu:2117/339661 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| spelling |
Deployment mechanism for a L-band helix antenna in 1-Unit CubesatFernández Capón, Lara Pilar|||0000-0002-1223-6892Sobrino Hidalgo, MarcoMilian, OriolAguilella, AndreaSolanellas Bofarull, ArnauBadia Ballús, MarcMuñoz Martin, Joan Francesc|||0000-0002-6441-6676Ruiz De Azúa Ortega, Juan Adrián|||0000-0001-5892-3404Sureda Anfres, Miquel|||0000-0003-2455-4211Camps Carmona, Adriano José|||0000-0002-9514-4992SatellitesCubeSatNanosatelliteHelixDeployableAntennaSatèl·lits artificialsÀrees temàtiques de la UPC::Enginyeria de la telecomunicacióRecently, there is a renewed interest in Earth Observation (EO) of the cryosphere as a proxy of global warming, soil moisture for agriculture and desertification studies, and biomass for carbon storage. Global Navigation Satellite System-Reflectometry (GNSS-R) and L-band microwave Radiometry have been used to perform these measurements. However, it is expected that the combination of both can largely improve current observations. Cat-4 mission aims at addressing this technology challenge by integrating a combined GNSS-R and Microwave Radiometer payload into a 1-Unit CubeSat. One of the greatest challenges is the design of an antenna that respects the envelope and stowage requirements of 1-Unit CubeSat, being able to work in the different frequency bands: Global Positioning System (GPS) L1-band (1575 MHz), GPS L2-band (1227 MHz), and microwave radiometry at 1400–1427 MHz. After a trade-off analysis, a helix antenna was found to be the most suitable option. This antenna has 11 turns equally distributed with 68.1 mm of diameter. This design generates an antenna with 506 mm of axial length, providing the maximum radiation gain in the endfire direction. Additionally, a counterweight is added at the tip of the antenna to enhance the directivity, and it is used as gravity gradient technique. The deployment of this antenna in vacuum and extreme temperature conditions is the greatest mechanical challenge that needs to be addressed for the success of the mission. This work presents a mechanical solution that enables to deploy the helix antenna from 25.5 mm (stowed configuration) to the final 506 mm (deployed configuration). By sequentially deploying different parts of the antenna, the final configuration is reached without impacting the attitude pointing of the CubeSat. This is accomplished using dyneema lines that are melted sequentially by commands. In addition, the deployment velocity, acceleration, and waving are presented as part of its characterization. The current test results in a Thermal Vacuum Chamber indicate also that the deployment can be achieved in -35 °C. The Cat-4 CubeSat, with the L-band helix antenna, will be launched in Q4 2020 as part of the “Fly Your Satellite!” program of the European Space Agency (ESA).This work was supported in part by the ‘‘CommSensLab’’ ExcellenceResearch Unit Maria de Maeztu Ministerio de asuntos Económicos y transformación digital (MINECO) under Grant MDM-2016-0600; in part by the Spanish Ministerio de Ciencia e Innovación (MICINN) and European Union - European Regional Development Fund (EUERDF) project ‘‘Sensing with pioneering opportunistic techniques’’ un-der Grant RTI2018-099008-B-C21; and in part from FI-2019 grant from AGAUR-Generalitat de Catalunya.Peer Reviewed20202020-09-0820212021-02-15journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/339661https://dx.doi.org/10.1016/j.actaastro.2020.09.005reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3396612026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| title |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| spellingShingle |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat Fernández Capón, Lara Pilar|||0000-0002-1223-6892 Satellites CubeSat Nanosatellite Helix Deployable Antenna Satèl·lits artificials Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
| title_short |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| title_full |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| title_fullStr |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| title_full_unstemmed |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| title_sort |
Deployment mechanism for a L-band helix antenna in 1-Unit Cubesat |
| dc.creator.none.fl_str_mv |
Fernández Capón, Lara Pilar|||0000-0002-1223-6892 Sobrino Hidalgo, Marco Milian, Oriol Aguilella, Andrea Solanellas Bofarull, Arnau Badia Ballús, Marc Muñoz Martin, Joan Francesc|||0000-0002-6441-6676 Ruiz De Azúa Ortega, Juan Adrián|||0000-0001-5892-3404 Sureda Anfres, Miquel|||0000-0003-2455-4211 Camps Carmona, Adriano José|||0000-0002-9514-4992 |
| author |
Fernández Capón, Lara Pilar|||0000-0002-1223-6892 |
| author_facet |
Fernández Capón, Lara Pilar|||0000-0002-1223-6892 Sobrino Hidalgo, Marco Milian, Oriol Aguilella, Andrea Solanellas Bofarull, Arnau Badia Ballús, Marc Muñoz Martin, Joan Francesc|||0000-0002-6441-6676 Ruiz De Azúa Ortega, Juan Adrián|||0000-0001-5892-3404 Sureda Anfres, Miquel|||0000-0003-2455-4211 Camps Carmona, Adriano José|||0000-0002-9514-4992 |
| author_role |
author |
| author2 |
Sobrino Hidalgo, Marco Milian, Oriol Aguilella, Andrea Solanellas Bofarull, Arnau Badia Ballús, Marc Muñoz Martin, Joan Francesc|||0000-0002-6441-6676 Ruiz De Azúa Ortega, Juan Adrián|||0000-0001-5892-3404 Sureda Anfres, Miquel|||0000-0003-2455-4211 Camps Carmona, Adriano José|||0000-0002-9514-4992 |
| author2_role |
author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Satellites CubeSat Nanosatellite Helix Deployable Antenna Satèl·lits artificials Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
| topic |
Satellites CubeSat Nanosatellite Helix Deployable Antenna Satèl·lits artificials Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
| description |
Recently, there is a renewed interest in Earth Observation (EO) of the cryosphere as a proxy of global warming, soil moisture for agriculture and desertification studies, and biomass for carbon storage. Global Navigation Satellite System-Reflectometry (GNSS-R) and L-band microwave Radiometry have been used to perform these measurements. However, it is expected that the combination of both can largely improve current observations. Cat-4 mission aims at addressing this technology challenge by integrating a combined GNSS-R and Microwave Radiometer payload into a 1-Unit CubeSat. One of the greatest challenges is the design of an antenna that respects the envelope and stowage requirements of 1-Unit CubeSat, being able to work in the different frequency bands: Global Positioning System (GPS) L1-band (1575 MHz), GPS L2-band (1227 MHz), and microwave radiometry at 1400–1427 MHz. After a trade-off analysis, a helix antenna was found to be the most suitable option. This antenna has 11 turns equally distributed with 68.1 mm of diameter. This design generates an antenna with 506 mm of axial length, providing the maximum radiation gain in the endfire direction. Additionally, a counterweight is added at the tip of the antenna to enhance the directivity, and it is used as gravity gradient technique. The deployment of this antenna in vacuum and extreme temperature conditions is the greatest mechanical challenge that needs to be addressed for the success of the mission. This work presents a mechanical solution that enables to deploy the helix antenna from 25.5 mm (stowed configuration) to the final 506 mm (deployed configuration). By sequentially deploying different parts of the antenna, the final configuration is reached without impacting the attitude pointing of the CubeSat. This is accomplished using dyneema lines that are melted sequentially by commands. In addition, the deployment velocity, acceleration, and waving are presented as part of its characterization. The current test results in a Thermal Vacuum Chamber indicate also that the deployment can be achieved in -35 °C. The Cat-4 CubeSat, with the L-band helix antenna, will be launched in Q4 2020 as part of the “Fly Your Satellite!” program of the European Space Agency (ESA). |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 2020-09-08 2021 2021-02-15 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/339661 https://dx.doi.org/10.1016/j.actaastro.2020.09.005 |
| url |
https://hdl.handle.net/2117/339661 https://dx.doi.org/10.1016/j.actaastro.2020.09.005 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
| instname_str |
Universitat Politècnica de Catalunya (UPC) |
| reponame_str |
UPCommons. Portal del coneixement obert de la UPC |
| collection |
UPCommons. Portal del coneixement obert de la UPC |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869418009387335680 |
| score |
15.300724 |