Featured Research

from universities, journals, and other organizations

Researchers Develop Heat-Resistant Material To Aid In Defense

Date:
November 24, 2003
Source:
University Of Missouri-Rolla
Summary:
Two University of Missouri-Rolla researchers are working to better prepare the military against attacks by improving the materials for missile components such as nozzles.

Two University of Missouri-Rolla researchers are working to better prepare the military against attacks by improving the materials for missile components such as nozzles.

Dr. Greg Hilmas, assistant professor of ceramic engineering, and Dr. Bill Fahrenholtz, assistant professor of ceramic engineering, are developing ultra-high-temperature ceramics to make missile nozzles stronger and more resistant to heat and thermal shock.

“When a missile has been launched, there are various stages of its flight trajectory at which you can attempt to shoot it down, but you have a limited set of options,” says Hilmas. “You need missiles with some pretty serious propulsion capability moving at a good clip. This is when our nation’s defense industry needs the highest melting temperature materials to survive in a missile environment that contains extremely hot propellants.”

Receiving $400,000 over a three-year period from the U.S. Army Space and Missile Defense Command, Hilmas and Fahrenholtz are beginning the effort to create a new material using silicon carbide that can withstand these extremely high temperatures.

The UMR researchers are going to study why certain materials perform better under the high-temperature and high-stress conditions of a thermal shock environment. Thermal shock is what occurs when materials heat up or cool down too quickly and can’t handle the stress load. “If you take a glass cup from the dishwasher when it is really hot and run it under cold water it will shatter. If you do the same with a Pyrex baking dish it doesn’t because that material is designed to have good thermal shock resistance,” says Hilmas. “When a missile lights off it is going from room temperature to about 3,000 degrees Celsius in about one second and thermal shock is an issue.”

“We will be attempting to develop silicon carbide ceramics that will have better thermal shock resistance than any other ceramic silicon carbide that has ever been made,” says Fahrenholtz. “Currently, the Army uses metals on missile nozzles, and using ceramics would make a big improvement.”

During the first year of research Hilmas and Fahrenholtz hope to validate the approach of using silicon carbide and start testing and creating specific materials. At the end of the third year, they plan to present the Army with actual samples along with a set of design criteria for the creation of novel ultra-high-temperature ceramic materials that can be used for missile nozzles. Ultimately they would like to see the material tested in a real missile nozzle, says Fahrenholtz.


Story Source:

The above story is based on materials provided by University Of Missouri-Rolla. Note: Materials may be edited for content and length.


Cite This Page:

University Of Missouri-Rolla. "Researchers Develop Heat-Resistant Material To Aid In Defense." ScienceDaily. ScienceDaily, 24 November 2003. <www.sciencedaily.com/releases/2003/11/031124072118.htm>.
University Of Missouri-Rolla. (2003, November 24). Researchers Develop Heat-Resistant Material To Aid In Defense. ScienceDaily. Retrieved August 28, 2014 from www.sciencedaily.com/releases/2003/11/031124072118.htm
University Of Missouri-Rolla. "Researchers Develop Heat-Resistant Material To Aid In Defense." ScienceDaily. www.sciencedaily.com/releases/2003/11/031124072118.htm (accessed August 28, 2014).

Share This




More Matter & Energy News

Thursday, August 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Australian Airlines Relax Phone Ban Too

Australian Airlines Relax Phone Ban Too

Reuters - Business Video Online (Aug. 26, 2014) Qantas and Virgin say passengers can use their smartphones and tablets throughout flights after a regulator relaxed a ban on electronic devices during take-off and landing. As Hayley Platt reports the move comes as the two domestic rivals are expected to post annual net losses later this week. Video provided by Reuters
Powered by NewsLook.com
Hurricane Marie Brings Big Waves to California Coast

Hurricane Marie Brings Big Waves to California Coast

Reuters - US Online Video (Aug. 26, 2014) Huge waves generated by Hurricane Marie hit the Southern California coast. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Chinese Researchers Might Be Creating Supersonic Submarine

Chinese Researchers Might Be Creating Supersonic Submarine

Newsy (Aug. 26, 2014) Chinese researchers have expanded on Cold War-era tech and are closer to building a submarine that could reach the speed of sound. Video provided by Newsy
Powered by NewsLook.com
Breakingviews: India Coal Strained by Supreme Court Ruling

Breakingviews: India Coal Strained by Supreme Court Ruling

Reuters - Business Video Online (Aug. 26, 2014) An acute coal shortage is likely to be aggravated as India's supreme court declared government coal allocations illegal, says Breakingviews' Peter Thal Larsen. Video provided by Reuters
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