Featured Research

from universities, journals, and other organizations

Space Technology To Soothe Roadster Ride

Date:
January 7, 2009
Source:
European Space Agency
Summary:
Space missions are highly complex operations, not only because the satellites or space probes are unique pieces of top-notch intricate high-tech, but also because it is so challenging to get them to their assigned position in space without damage. The technology used is now being transferred to the car industry to increase comfort.

SPADD damping struts for torsion mode damping. Patch treatment at the rear for higher frequencies (the first panel mode with significant damping is shown). Reference: Etienne Balmes: Incorporating damping predictions in the vibroacoustic design process.
Credit: SDTOOLS/ARTEC Aerospace

Space missions are highly complex operations, not only because the satellites or space probes are unique pieces of top-notch intricate high-tech, but also because it is so challenging to get them to their assigned position in space without damage. The technology used is now being transferred to the car industry to increase comfort.

During its launch into orbit, a satellite is exposed to a number of extreme stresses. At takeoff the extremely strong engine vibrations are transmitted via the launcher structure to the satellite, which is also exposed to a high-intensity sound levels (140 dB and more). The increasing speed of the rocket also leads to aerodynamic strains that turn into a shockwave when the launch vehicle's velocity jumps from subsonic to supersonic.  

That is not all. When the burned out rocket stages are blasted off and the next stage is fired up, the satellite is exposed to temporary impulsive vibrations. So how does the satellite survive earthquake-like vibrations, the forces of supersonic shock waves and the pressures of explosive blasts?

French company ARTEC Aerospace has developed a vibration and acoustic attenuation technology based on a damping mechanism within the structures, called Smart Passive Damping Device (SPADD®). The principle of the technology is to increase the natural damping of a structure by fixing a light energy-dissipating device to it, without modifying the structure's static behaviour.

SPADD's damping system is so much superior to traditional dissipation devices that it is considered to be a technological breakthrough in the investigation and research of vibro-acoustics, the area of tackling noise and vibration problems such as those induced by powerful jets or rockets.

The SPADD technology is used on the Ariane launchers and also mounted on board a number of satellites such as Intelsat, Inmarsat, Integral and MetOp.

Space technology for the car industry

Based on this space technology, ARTEC Aerospace has developed tools for optimising the damping in non-space structures. ESA’s Technology Transfer Programme Office (TTPO) supported the transfer of this technology to the car industry through its Technology Transfer Network (TTN).

MST Aerospace, technology broker and leader of TTPO's TTN, then brought ARTEC Aerospace and its SPADD technology together with German car manufacturer Daimler Chrysler AG.

The design of convertible vehicles is often based on sibling vehicles of the saloon or coupé line of cars. However, by taking off the top of a self-supporting structure, the convertible’s structure loses stiffness. This leads to torsion vibrations that apart from making for an uncomfortable ride, also make the rear view mirror and the steering wheel shake violently; up to 10 times more than in the saloon version.

At present, the way to correct this is to increase the shell weight of the body but this means that despite the missing top, a convertible weighs around 50 kg more than the saloon version. ARTEC Aerospace demonstrated to Daimler Chrysler that by using SPADD technology on a Mercedes CLK roadster, stiffening elements of 30 to 40 kg mass could be saved.

Successful road tests followed

Since then, Daimler Chrysler and ARTEC Aerospace have been working on implementing the SPADD technology in specific vehicle lines and finding suitable development partners. According to Daimler Chrysler and ARTEC, the results of the cooperation are very promising and have been demonstrated through successful road tests of models with different implementation of the technology.

SPADD has the potential to increase the performance of the structure, for geometrical simplification and for mass and cost savings.


Story Source:

The above story is based on materials provided by European Space Agency. Note: Materials may be edited for content and length.


Cite This Page:

European Space Agency. "Space Technology To Soothe Roadster Ride." ScienceDaily. ScienceDaily, 7 January 2009. <www.sciencedaily.com/releases/2008/12/081228200100.htm>.
European Space Agency. (2009, January 7). Space Technology To Soothe Roadster Ride. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2008/12/081228200100.htm
European Space Agency. "Space Technology To Soothe Roadster Ride." ScienceDaily. www.sciencedaily.com/releases/2008/12/081228200100.htm (accessed July 24, 2014).

Share This




More Space & Time News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: ISS Cargo Ship Launches in Kazakhstan

Raw: ISS Cargo Ship Launches in Kazakhstan

AP (July 23, 2014) — The Progress 56 cargo ship launched from the Baikonur Cosmodrome in Kazakhstan Wednesday. NASA says it will deliver cargo and crew supplies to the International Space Station. (July 23) Video provided by AP
Powered by NewsLook.com
Raw: Cargo Craft Undocks from Space Station

Raw: Cargo Craft Undocks from Space Station

AP (July 22, 2014) — A Russian Soyuz cargo-carrying spacecraft undocked from the International Space Station on Monday. The craft is due to undergo about ten days of engineering tests before it burns up in the Earth's atmosphere. (July 22) Video provided by AP
Powered by NewsLook.com
NASA Ceremony Honors Moon Walker Neil Armstrong

NASA Ceremony Honors Moon Walker Neil Armstrong

AP (July 21, 2014) — NASA honored one of its most famous astronauts Monday by renaming a historic building at the Kennedy Space Center in Florida. It now bears the name of Neil Armstrong, the first man to walk on the moon. (July 21) Video provided by AP
Powered by NewsLook.com
Neil Armstrong's Post-Apollo 11 Life

Neil Armstrong's Post-Apollo 11 Life

Newsy (July 19, 2014) — Neil Armstrong gained international fame after becoming the first man to walk on the moon in 1969. But what was his life like after the historic trip? Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins