The compressible Navier-Stokes equations form the cornerstone of fluid dynamics, describing the motion of viscous compressible fluids under conservation of mass, momentum and energy. By incorporating ...

Currently, large-caliber guns require a heavy mount to absorb the recoil. However, the emphasis in the U.S. Army is now on lightweight and deployable vehicles. The Rarefaction wAVE guN (RAVEN) was ...

The Sonic RAREFACTION WAVE GUN (RAVEN) is a Projectile Launch Method that achieves: – Unprecedented Reductions in Recoil Impulse. It can shoot faster, cooler and can be lighter than a current gun ...

The control of small structures and fast modes needs not only more accurate values in the commonly used dimensions (, u, T, P), but also, in fact more essentially, the controls from more dimensions.

Inspired by the paper folding art of origami, a University of Washington team created a paper model of a metamaterial that uses 'folding creases' to soften impact forces for potential applications in ...

Your vocal cords vibrate 100-1,000 times a second. You can feel them vibrate if you lightly touch a finger on your throat when you speak. The localized compression of the air is called condensation.

Two further volumes of this remarkable compilation of physical and technical mechanics are now to hand; they are devoted to fluids (liquids in vol. 5-1,152 pages-and gases and vapours in vol. 6-918 ...