Add Yahoo as a preferred source to see more of our stories on Google. Hypersonic aircraft, like NASA's X-43A shown here, are exposed to extreme heat and pressure. Jim Ross/NASA via Getty Images Their ...

Those outside the aerospace world may find it surprising that engineers spend so much time discussing weight. However, when working on flying machines, weight is an antagonistic force. If too much ...

From hypersonic aircraft to nuclear-powered submarines , many of today's most advanced defense systems rely on a special class of materials known ...

From hypersonic aircraft to nuclear-powered submarines, many of today’s most advanced defense systems rely on a special class of materials known as refractory alloys. This class refers to metals that ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Their atoms are held together by strong chemical bonds and arranged in a stable ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Houlong Zhuang, Arizona State University and Vitor Rielli, UNSW Sydney (THE ...