Mars Exploration News  





. ESA: Green Light For The Deployment Of The Second MARSIS Boom

The 2nd antenna of the Mars Express radar MARSIS (indicated by the red arrow) is due to be deployed in mid-June 2005.

Paris, France (SPX) Jun 08, 2005
Following in-depth analyses performed after the deployment of the first MARSIS antenna boom on board Mars Express, ESA has decided to proceed with the deployment of the second 20-metre antenna boom.

The full operation will be performed during a time frame starting 13 June and nominally ending on 21 June.

A delay in the execution of the second boom deployment was necessary, due to problems encountered with the first deployment in early May this year. During the deployment, one of the antenna hinges (the tenth) got stuck in an unlocked position. Analysis of data obtained from earlier ground testing suggested a potential solution.

The Mars Express spacecraft control team at ESA's Spacecraft Operations Centre (ESOC) succeeded in unblocking the hinge by exposing the cold side of the boom to the Sun. This warmed the hinges and the boom quickly became unstuck. In the end, the first boom deployment was completed on 10 May.

The lessons learnt during the first boom deployment were used to run new simulations and determine a new deployment scenario for the second boom. This scenario contains an additional sun-heating phase, to get the best possible thermal conditions for all hinges.

The deployment of the third (7-metre) third MARSIS boom is not considered critical. It will be commanded only once the ESA ground control team have re-acquired signal from the spacecraft, and made sure with a sequence of tests that the second boom is correctly locked into position and the spacecraft is well under control.

After this event MARSIS, the Mars Express Sub-Surface Radar Altimeter, will enter into a commissioning phase for the next few weeks, before starting to look at Mars's ionosphere during martian daylight, and to probe down below the Martian surface during the martian night.

Community
Email This Article
Comment On This Article

Related Links
Mars Express
SpaceDaily
Search SpaceDaily
Subscribe To SpaceDaily Express
Mars News and Information at MarsDaily.com
Lunar Dreams and more




Tempur-Pedic Mattress Comparison

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
Spirit Heading To 'Home Plate'
Pasadena CA (JPL) Jan 09, 2006
Last week Spirit completed robotic-arm work on "El Dorado." The rover used all three of its spectrometers plus the microscopic imager for readings over the New Year's weekend.

.
Get Our Free Newsletters Via Email
  



  • NASA plans to send new robot to Jupiter
  • Los Alamos Hopes To Lead New Era Of Nuclear Space Tranportion With Jovian Mission
  • Boeing Selects Leader for Nuclear Space Systems Program
  • Boeing-Led Team to Study Nuclear-Powered Space Systems

  • A Hitchhiker's Guide To The Moon
  • Lunar "Dark Spots" Point To An Upheaval In Planetary Orbits
  • NASA Announces New Centennial Challenge
  • Divining For Lunar Water?

  • Further Steps Towards A European Space Policy
  • Canadian Scientists Contribute To European Study Of The Body At Rest
  • NASA Naps
  • India, Ukraine To Sign Pact In Outer Space

  • Planners Eye Next Stage Of New Horizons Pluto Mission
  • Preperation For Mission To Pluto And Beyond Continues
  • Ball Aerospace Delivers Imaging Instrument For NASA's Mission To Pluto
  • Case Of Sedna's Missing Moon Solved

  • NASA Selects New Frontiers Mission Concept Study
  • Icy Jupiter Moon Throws A Curve Ball At Formation Theories
  • Jupiter: A Cloudy Mirror For The Sun?
  • Chandra Probes High-Voltage Auroras On Jupiter



  • Scientists Discover Possible Titan Volcano
  • Cassini Gradually Revealing Phoebe's Origin
  • Odd Spot On Titan Baffles Scientists
  • Titan's Face Lifted

  • Scientists Help Develop First Single Molecule Transistor
  • Self-cleaning "Smart" Fabrics Capable of Environmental Toxin Remediation
  • Recycling iPods Might Not Be So Green
  • NIST Photon Detectors Have Record Efficiency

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement