The heavy fan motor is mounted on the panel, so have a helper hold it while you install the air conditioner sound blanket. The blankets are safe to use, and they can reduce noise coming from the ...

A D.C. Air National Guard F-16 Fighting returns from a training mission April 3, 2012, at Joint Base Andrews, Md. (Senior Airman Perry Aston/Air Force) Washington-area residents were startled ...

Simply installing a bigger air conditioner might sound like a solution to the problem. Not so, according to Reinhard Radermacher, a professor of mechanical engineering at the University of Maryland.

Boom Supersonic broke the sound barrier in late January with its XB-1 test jet, paving the way forward in the startup's efforts to build its own supersonic airliner. Boom and NASA released a ...

Startups, NASA pursuing supersonic commercial flight 13:40. A civilian jet broke the sound barrier for the first time Tuesday while making a historic test flight over the Mojave Desert.

Reaching and surpassing the speed of sound has a noticeable effect. It doesn't matter the size or shape of the object; once it passes the sound barrier, it will produce a sonic boom.

Back in the 1940s, the predecessor organizations of both NASA and the U.S. Air Force worked together with Chuck Yeager to achieve a flight speed world record.