A dashcam clip from a passenger car has turned a routine interstate drive into a case study in how quickly everything can go wrong. The footage shows a semi truck hurtling across a grassy median, ...

A scathing new Pentagon Inspector General report found problems at the plant delayed the Army's 100,000 round-per-month goal.

Physicists have debated which way a submerged sprinkler sucking in water would spin. Careful experiments provide an answer.

Manufacturing problems are dashing the U.S. Army's plans to boost production of urgently needed 155-mm howitzer shells, a Pentagon watchdog warned. Despite a goal of 100,000 rounds per month by ...

Quirky backyard sprinklers helped scientists solve a decades-old mystery about how flowing water makes objects spin.

What is the best way to assess a new album by Madonna in the year 2026? With the exception of a bop or two, the pop iconoclast has been past her creative prime for some time now. Her last few ...

The experience gained during decades of irradiation studies tells us that bombardment of solids with energetic particles creates defects and thus deteriorates the materials. Indeed, the first ...

The radius of jetting projectile charge (JPC) varies significantly from the head to the tail, resulting in the crater formed with a large and uniform radius when penetrating steel target. Current ...

The penetration performance of projectiles is closely related to their nose shape as it influences the kinetic energy penetration of a rigid projectile. One new type of projectile, which is entitled U ...

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In order to solve these problems, this paper proposes a negative Poisson's ratio metamaterial filled structure based on topology optimization. Firstly, a functional cell element topology optimization ...

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