Featured Research

from universities, journals, and other organizations

Levitating Furnace Holds Promise For Future Experiments

Date:
July 17, 1998
Source:
NASA/Marshall Space Flight Center--Space Sciences Laboratory
Summary:
A unique levitation furnace that flew on the Space Shuttle in 1998 is being eyed for upgrades to fly on future Shuttle and International Space Station missions.

July 15, 1998: A unique levitation furnace that flew on the Space Shuttle in 1998 is being eyed for upgrades to fly on future Shuttle and International Space Station missions.

"TEMPUS on MSL-1 provided it was operationally reliable," said Dr. Ivan Egry, the project scientist at the German Space Agency (DLR). "I am really surprised at how much scientific data we are still squeezing out of it."

Egry spoke Tuesday morning to the third Biennial Microgravity Materials Science Conference sponsored by NASA.

TEMPUS - built by the DLR and used jointly by DLR and NASA - is the German acronym for containerless electromagnetic processing in weightlessness. That, simply put, is what TEMPUS does. An electromagnetic coil inside the TEMPUS facility positions metal samples with about 1/1,000th the force needed on the ground to work against gravity and keep the samples from touching the container walls. A second coil pumps in radio wave energy - a bit like a microwave oven - to melt the sample.

This approach is vital in a number of research areas because touching the container walls will instantly cool the sample and levitation on the ground often involve forces great enough to disturb the sample. Scientist don't want either to happen when they are trying to make precise measurements of fundamental properties that can help them refine manufacturing processes on Earth.

TEMPUS flew on the Microgravity Sciences Laboratory-1 mission in 1998, and on the second International Microgravity Laboratory (IML-2) in 1994. Data are still being analyzed, but Egry gave a preview Tuesday, including benchmark data that will let scientists correct the surface tension measurements for one type of metal, and make the first-ever reliable viscosity measurements.

"Many things were surprising," Egry said when asked about the data from TEMPUS. Among them were the first experimental measurements of the electrical conductivity of cobalt-palladium in both its liquid and solid states.

TEMPUS demonstrated its value by making repeat measurements that matched very closely with one another. Consistency is crucial when one is trying to establish basic physical properties. For example, one line of experiments involved cooling metals, such as zirconium, far below their normal freezing point and then recording the point where they froze, how much heat they gave off, and other details. The zirconium sample was put through 120 melt/freeze cycles.

"It's really amazing to see how one undercooling cycle follows the other," Egry said as he showed a graph showing precise repeatability in the data.

All told, the MSL-1 mission hosted 22 experiments comprising 197 hours of test run and 437 melting cycles.

Spurred by this success, DLR is looking at adapting TEMPUS to fly on Spacelab, and to incorporate better sample handling and video capabilities, and a broader temperature range. DLR also is looking at an Advanced TEMPUS that would allow scientists to replace samples in orbit - so the furnace would not have to be brought back - and add other improvements to enhance the science.

Editor's Note: The original news release, with images and related links, can be found at: http://science.msfc.nasa.gov/newhome/headlines/msad15jul98_2.htm


Story Source:

The above story is based on materials provided by NASA/Marshall Space Flight Center--Space Sciences Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Marshall Space Flight Center--Space Sciences Laboratory. "Levitating Furnace Holds Promise For Future Experiments." ScienceDaily. ScienceDaily, 17 July 1998. <www.sciencedaily.com/releases/1998/07/980717084816.htm>.
NASA/Marshall Space Flight Center--Space Sciences Laboratory. (1998, July 17). Levitating Furnace Holds Promise For Future Experiments. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/1998/07/980717084816.htm
NASA/Marshall Space Flight Center--Space Sciences Laboratory. "Levitating Furnace Holds Promise For Future Experiments." ScienceDaily. www.sciencedaily.com/releases/1998/07/980717084816.htm (accessed July 31, 2014).

Share This




More Space & Time News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Supply Ship Takes Off for International Space Station

Supply Ship Takes Off for International Space Station

AFP (July 30, 2014) The European Space Agency's fifth Automated Transfer Vehicle (ATV-5) is takes off to the International Space Station on an Ariane 5 rocket from French Guiana. Duration: 00:34 Video provided by AFP
Powered by NewsLook.com
Raw: Rocket Launches Into Space With Cargo Ship

Raw: Rocket Launches Into Space With Cargo Ship

AP (July 30, 2014) Arianespace launched a rocket Tuesday from French Guiana carrying a robotic cargo ship to deliver provisions to the International Space Station. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com
Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Newsy (July 27, 2014) The satellite is back under ground control after a tense few days, but with a gecko sex experiment on board, the media just couldn't help themselves. 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