Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Venus Express launch campaign starts

05.08.2005


ESA’s Venus Express spacecraft has just completed its last phase of testing in Europe and is ready to be shipped to its launch site at the Baikonur Cosmodrome in Kazakhstan.



One and a half years after its sister spacecraft Mars Express arrived at Mars, Europe’s newest planetary probe is ready to depart on the first leg of its journey to Earth’s own sister planet, the mysterious Venus.

Venus Express was proposed in 2001, as a mission concept to take as much as possible of the Mars Express design and use it for another planetary mission.


The mission to Venus was officially approved in 2002 by ESA’s Science Programme Committee, and the industrial contract to build the spacecraft was awarded in October 2002 to EADS Astrium, leading a team of 25 subcontractors from 14 European countries.

The spacecraft is currently at the Astrium-owned Intespace facility in Toulouse, France where it has been undergoing testing since October 2004.

“The spacecraft really deserves its name, as never before has an ESA scientific mission been developed that rapidly!” said Don McCoy, ESA Project Manager for Venus Express. The mission has in fact taken only four years from concept to launch.

Work on Venus Express began in earnest eight months before Mars Express was launched. This meant that continuity was maintained in the programmes and the industrial consortium was kept almost unchanged. Thirty-four months later, the spacecraft has passed its Flight Acceptance Review, and is ready for shipping.

“We are legitimately proud of this achievement which was possible through a co-operation with ESA, industry and the scientific community,” said Don McCoy.

Built by Alenia Spazio of Turin, Italy, the spacecraft was brought to Toulouse with its seven scientific instruments, mainly inherited from the Mars Express and Rosetta missions, already integrated. These instruments will provide new clues on the planet’s peculiar features, that still remain unexplained even though more than 20 Russian and US probes have visited Venus since 1964.

The mission will provide the most comprehensive study ever of the Venusian atmosphere. It will dig into mysteries such as the unexplained fast atmospheric rotation in four days around the planet and the polar vortices.

It will study the global thermal balance and the role of the strongest ‘greenhouse effect’ found in the Solar System, as well as the structure and dynamics of the clouds and the mysterious ultraviolet markings detected above the cloud cover.

In Toulouse, the spacecraft underwent two rounds of system-level testing and subsystem checks before and after environmental testing. The latter included vibration and acoustic testing, necessary to verify that it would survive launch.

They also included thermal vacuum testing, to make sure that the spacecraft will withstand the cold of deep space, and a special set of simulated solar illumination tests, to make sure the spacecraft will survive the harsh thermal conditions created by the vicinity of the Sun at Venus.

The spacecraft closely resembles Mars Express, but has been redesigned with several major modifications to allow it to face a very different environment around Venus. Venus Express has improved thermal control systems, to sustain a spacecraft heating that at Venus is four time greater than at Mars.

As the spacecraft will be much closer to the Sun than Mars Express, and therefore there is higher availability of solar radiation to power the spacecraft, the solar arrays have been redesigned to be smaller than those of Mars Express. Also, their new gallium-arsenide based technology is more tolerant to high temperatures.

Differently from Mars Express, instead of one high-gain antenna, Venus Express has two - pointed in opposite directions. In fact, as seen from Venus, Earth is an outer planet and it can be in any direction relative to the Sun. Two antennas will allow the spacecraft to communicate with Earth in any configuration, always having the side hosting delicate instruments away from the Sun.

Now Venus Express is in its container, which will be closed this week and moved by truck to Toulouse-Blagnac airport for its trip to Baikonur. Venus Express will fly via Moscow on board an Antonov 124 commercial cargo plane, arriving at its launch site on Sunday 7 August.

ESA Media Relations Office | alfa
Further information:
http://www.esa.int/esaSC/SEMMDL808BE_index_0.html

More articles from Physics and Astronomy:

nachricht A 100-year-old physics problem has been solved at EPFL
23.06.2017 | Ecole Polytechnique Fédérale de Lausanne

nachricht Quantum thermometer or optical refrigerator?
23.06.2017 | National Institute of Standards and Technology (NIST)

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

New 3-D model predicts best planting practices for farmers

26.06.2017 | Agricultural and Forestry Science

New research reveals impact of seismic surveys on zooplankton

26.06.2017 | Life Sciences

Correct connections are crucial

26.06.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>