Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Mars Express mission controllers ready for NASA Phoenix landing

21.05.2008
ESA's Mars Express mission control team are ready to monitor Phoenix's critical entry, descent and landing onto the Martian surface on 26 May 2008.

The Mars Express mission control team have completed major preparations for supporting the entry, descent and landing (EDL) phase of NASA's Phoenix mission to the Red Planet. On 25 May, Mars Express will point towards Phoenix's planned entry trajectory and record signals broadcast from the lander as it plunges through the Martian atmosphere.

The recorded data will serve as a useful and potentially crucial back-up to compare Phoenix's planned and actual descent profiles. Landing is planned for 23:38 UTC, 25 May, which is 01:38 CEST, 26 May.

"We have tested a specially designed slew for our spacecraft, and scheduled a series of data downloads immediately after Phoenix's landing; NASA will receive our recorded data about one hour later," says Michel Denis, Spacecraft Operations Manager at ESOC, ESA's Space Operations Centre, Darmstadt, Germany.

The Mars Express team will monitor the event from the Dedicated Control Room at ESOC.

Effective reuse of on-board lander communications system

Mission controllers will use the MELACOM (Mars Express Lander Communications) system to point towards Phoenix during EDL; the radio instrument was originally intended for communications with the Beagle 2 lander.

Mars Express will perform a high-speed slew as MELACOM tracks Phoenix, rotating about one axis at a speed some two to three times faster than normal; this action has already been tested and confirmed. The orbit phasing of Mars Express was already adjusted at the end of 2007 to provide visibility to Phoenix.

Data recording is scheduled to begin at 23:21 UTC, and run for 26 minutes, until 23:47 UTC.

"Our MELACOM data will enable NASA to confirm the Phoenix lander's descent characteristics, including speed and acceleration through the Mars atmosphere," says Peter Schmitz, Deputy Spacecraft Operations Manager and project lead for Mars Express Phoenix support activities.

MELACOM data will be downloaded to Earth via NASA's Deep Space terminals DSS-15 and DSS-25. After a 15-minute, 20-second light-speed travel time, ESOC will receive the data transmitted from Mars Express, i.e. at 00:40 UTC ( 02:40 CEST). Recorded data will subsequently be downloaded two more times to ensure no loss of packets.

The ESA spacecraft will also fly over Phoenix's intended landing zone, beginning at 06:12 UTC (08:12 CEST) on 26 May and will again monitor signals transmitted up from the surface.

In the following week, Mars Express will monitor Phoenix using MELACOM 14 more times; at least one of these will be used to demonstrate and confirm that the ESA spacecraft can be used as a data relay station for NASA, receiving data from the surface and transmitting test commands to the lander.

This capability has already been trialed between Mars Express and NASA's Mars Exploration Rovers (MER), now operating on the surface.

In the days leading up to the Phoenix landing, NASA and ESA ground stations also cooperated to perform highly sophisticated 'delta-DOR' (delta - Differential One-way Range) interferometry measurements. This enabled a precise determination of whether Phoenix was on track to meet the planned entry point.

This is the first time that ESA has been requested to operationally support NASA with the delta-DOR equipment installed at the Agency's two deep-space tracking stations, in Cebreros, Spain, and New Norcia, Australia.

| alfa
Further information:
http://www.esa.int/SPECIALS/Operations/SEM8KD0YUFF_0.html

More articles from Information Technology:

nachricht A novel hybrid UAV that may change the way people operate drones
28.03.2017 | Science China Press

nachricht Timing a space laser with a NASA-style stopwatch
28.03.2017 | NASA/Goddard Space Flight Center

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Researchers shoot for success with simulations of laser pulse-material interactions

29.03.2017 | Materials Sciences

Igniting a solar flare in the corona with lower-atmosphere kindling

29.03.2017 | Physics and Astronomy

As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation

29.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>