You're welcome
Der gute Anatol schreibt:
"In August 2012, a presentation by NPO Lavochkin promised the launch of the Laplas-P mission in 2022 to coincide with the JUICE project. By that time, the Russian part of the project included a lander and its electric cruise stage. The Russian-built orbiter was deleted from the Laplas-P program and all its functions were transferred to the European JUICE spacecraft. However in March 2013, the deputy head of NPO Lavochkin Maksim Martynov told the official RIA Novosti news agency that two spacecraft -- orbiter and the 800-killogram lander -- would be launched to Ganymede in 2023. Carried by the Proton or Angara rocket with a Briz upper stage, they would conduct one flyby of Venus, two flybys of the Earth and reach the Jupiter system in 2029, Martynov was quoted as saying. Another year and a half would be required for the spacecraft to enter orbit around Ganymede. Both spacecraft would be carrying around 50 kilograms of scientific instruments. The lander would be powered by a nuclear generator, while the orbiter could be equipped either with an RTG or with solar panels, ensuring at least several months of operation for both spacecraft.
By March 2013, NPO Lavochkin had completed the preliminary studies, NIR, of the Laplas mission. According to Roskosmos officials, the first funding of between 10 and 30 million rubles for the development of the Laplas project, known in Russian as OKR, was to start in 2014. This phase of the project was to continue until 2017, when the manufacturing of first prototypes was expected to start."
Quelle: russianspaceweb.com
Edit:
Der russiche Orbiter könnte durch den Juice Orbiter ersetz werden. Desweiteren soll Russland wohl RTG Generatoren der ESA für den Orbiter angeboten haben, was die Masse des Orbiters senken könnte.
Es gibt Stimmen die nicht ganz so begeistert sind von der Beteiligung Russlands, denn die Länder Mitnahme mach die Mission komplexer und man ist mit dem Design eh schon Massekritisch unterwegs.
Eckdaten zum ESA Orbiter:
elektrische Leistung: 630-700 W (EOM - end of Mission/2033)
Paneele: 60-75 m2, solare Leistung an Erde: ca.1370 W/m2, Jupiter: ca. 46 W/m2
Trockenmasse: ca. 1800 kg
max. Startmasse: < 5000 kg
Hier noch eine Illustration vom Ganymed dem größten Mond im Sonnensystem.
Edit:
Der Orbiter wird unterandrem die vertikale Bewegung des Eises auf Ganymede mit hilfe eines Laseraltimeter messen und mit den gewonnen Daten kann man an der Amplitude erkenne ob tatsächlich ein flüssiger Ozean unter dem Eis existiert.
