Automakers now treat silence as a core performance metric, not a luxury afterthought. The most obsessive high-mileage drivers ...

Whatever other qualities they may possess, jet fighters are not known for their quiet engines. They could soon become considerably less noisy without any loss in performance, though, thanks to a ...

Being supersonic involves a lot more than a cool-looking aircraft. You need engines that can push the jet past Mach 1, or 767.3 mph. These days, any jet maker also needs to consider sustainability, ...

When temperatures drop, the viscosity of the engine oil increases, meaning it becomes thicker. This change affects ...