File:Testing Juice's RIME antenna in the Hertz facility ESA24856935.jpg
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Summary
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English: A 1:18 scale model of the Juice mission's RIME antenna – Radar for Icy Moons Exploration, mounted on top of a simplified spacecraft model during tests in the Hertz facility at the European Space Research and Technology Centre (ESTEC) in Noordwijk, The Netherlands.
RIME is an ice-penetrating radar that will be used to remotely probe the subsurface structure of the large moons of Jupiter. Emitted by a 16-m long dipole antenna, the radar signals will penetrate the icy surfaces of the moons down to a depth of 9 km, providing a vertical resolution between 50 and 140 m. Testing of a scaled-down model not only meant that the whole spacecraft structure was significantly smaller and the RIME antenna was shrunk to about 80 cm in length, but it also enabled the frequency of operation to be increased to 162 MHz – a much more suitable frequency to test in indoor anechoic chambers. Français : Modèle à l'échelle 1:18 de l'antenne RIME de la mission Juice - Radar pour "Icy Moons Exploration" (exploration des grandes lunes de Jupiter), monté sur un modèle simplifié de vaisseau spatial lors d'essais dans l'installation Hertz du Centre européen de recherche et de technologie spatiales (ESTEC) à Noordwijk, aux Pays-Bas. RIME est un radar pénétrant dans la glace, destiné à sonder à distance la structure souterraine des grandes lunes de Jupiter. Émis par une antenne dipôle de 16 m de long, les signaux radar pénétreront les surfaces glacées des lunes jusqu'à une profondeur de 9 km, offrant une résolution verticale comprise entre 50 et 140 m.
L'utilisation d'un modèle réduit de l'engin spatial et de l'antenne RIME (ici réduite à environ 80 cm de longueur) a aussi permis d'augmenter la fréquence de fonctionnement à 162 MHz - une fréquence beaucoup plus appropriée ; à tester en chambres anéchoïques.
Deutsch: Ein Modell der RIME–Antenne (Radar for Icy Moons Exploration/Radar für die Eismonderforschung) im Maßstab 1:18. Die Antenne ist auf ein vereinfachtes Modell der Juice-Sonde montiert. Die Antenne wird im European Space Research and Technology Centre (ESTEC) in Noordwijk in den Niederlanden getestet. RIME ist ein Eis durchdringendes Radar, zur Fernerkundung der Oberflächenstruktur der großen Jupitermonde. Die Radarsignale der 16-Meter-Dipolantenne sollen die Eisflächen des Monds bis zu einer Tiefe von 9 km durchdringen mit einer vertikalen Auflösung zwischen 50 und 140 Meter. Die Antenne ist im Modell auf ca. 80 cm verkleinert, dadurch konnte die Antenne bei einer höheren Frequenz von 162 Mhz betrieben werden. |
| Date | 28 April 2023 (upload date) |
| Source | Testing Juice's RIME antenna in the Hertz facility |
| Author | European Space Agency |
| Other versions |
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| Activity | Space Science |
| Mission | Juice |
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| current | 17:46, 28 April 2023 | | 6,480 × 4,320 (34.95 MB) | OptimusPrimeBot | #Spacemedia - Upload of https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2023/04/testing_juice_s_rime_antenna_in_the_hertz_facility/24856925-1-eng-GB/Testing_Juice_s_RIME_antenna_in_the_Hertz_facility.jpg via Commons:Spacemedia |
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