JUICE ground control gets green light to start development
by Staff Writers
Paris (ESA) Jan 17, 2018
ESA's Jupiter Icy Moons Explorer - JUICE - passed an important milestone, the ground segment requirements review, with flying colours, demonstrating that the teams are on track in the preparation of the spacecraft operations needed to achieve the mission's ambitious science goals.
Planned to launch in 2022, JUICE will embark on a 7.5-year long journey through the Solar System before arriving at Jupiter in 2029. There, it will spend three and a half years examining the giant planet and its environment, in particular investigating the Galilean moons Ganymede, Europa and Callisto, which are thought to conceal oceans of liquid water beneath their icy crusts.
To explore the atmosphere, magnetosphere and tenuous rings of Jupiter, as well as to characterise its three ocean-bearing moons, JUICE will sport ten state-of-the-art instruments. These include cameras, spectrometers, a sub-millimetre sounder, an ice-penetrating radar, an altimeter, a radio-science experiment, and sensors to monitor the magnetic fields and particle environment, as well as a radio interferometry experiment.
After confirmation of the spacecraft design and the first tests on individual pieces of the equipment, the mission has now gone through another important step, successfully showing that the ground teams that will operate JUICE and its suite of science instruments meet all the necessary requirements.
While space missions operate beyond the realm of our planet, the bulk of the work is actually conducted by engineers and scientists on Earth - the ground segment - who plan the activities, monitor, command and communicate with spacecraft so that they point in the desired directions to gather the data needed by the scientific community.
ESA's contribution to the ground segment of JUICE consists of the Mission Operations Centre (MOC), which is based at the European Space Operations Centre (ESOC) in Darmstadt, Germany, and also includes the ground stations and communications network; and the Science Operations Centre (SOC), based at the European Space Astronomy Centre (ESAC) near Madrid, Spain.
The ground segment requirements review, with the aim of assessing the overall implementation and progress of both the MOC and SOC, was completed on 13 December 2017.
"With this successful review, we confirmed that the JUICE ground segment is on track to deliver the great science expected by the community," says Olivier Witasse, ESA JUICE project scientist.
As is the case for other missions, the MOC is responsible for commanding the spacecraft, monitoring its health and returning the data. Besides that, it is also in charge of a series of mission-specific functions, such as calculating the complex trajectory that will take JUICE to Jupiter, which includes five planetary gravity assist manoeuvres at Venus, Earth and Mars, as well as preparing for the spacecraft operations in the Jovian system, involving 26 flybys of Ganymede, Europa and Callisto, and eventually orbit injection around Ganymede.
The SOC is instead responsible for planning the science observations to be conducted with the ten instruments on-board of JUICE to maximise the scientific return of the mission. This entails the scheduling of spacecraft pointing to the various observation targets - Jupiter, the moons, the plasma environment, the magnetic field - and of the different operating modes to be employed by each instrument.
The review board verified that the mission requirements for the ground segment, including operations of both the spacecraft and payload, are fully met. Special attention was dedicated to the specific needs of the instruments that are part of JUICE's payload relevant to all phases of mission operations, from calibration measurements during the long cruise phase to the challenging operations in the Jupiter system.
As part of the review, the mission concept and the ground segment design were also addressed, as well as all details pertaining the organisation of work, from procurement to scheduling and overall management, making sure that potential critical areas have been identified and appropriate risk-mitigation measures have been defined.
After the successful review, the JUICE MOC and SOC will now proceed to the next phase, designing their respective implementation; a further review of the ground segment design is planned for the end of 2018.
"This year will be very crucial for the JUICE programme, with three key milestone to come: a Sun illumination test in April, which will simulate the conditions of the Venus fly-by on the full-scale thermal model of the spacecraft; the start of the engineering model test campaign in mid-2018; and the kick-off of the critical design review at the end of the year," says Giuseppe Sarri, ESA JUICE project manager.
"So far all preparation activities are running as expected, in line with the planned launch date on 20 May 2022."
Washington (UPI) Dec 19, 2017
Scientists can finally explain why Jupiter's jet stream regularly reverses course - like clockwork. The revelation could help scientists better understand similar equatorial jet stream oscillations found on Earth and Saturn. The latest research - published this week in the Journal of Geophysical Research-Planets - reveals that gravity waves are the primary driver of the reversal of J ... read more
Jupiter Icy Moons Explorer - JUICE
The million outer planets of a star called Sol
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.