New discovery may help engineers design quieter jet airplanes

If you've ever experienced the exceptionally powerful and reverberating sounds of a jet during takeoff, you likely won't be surprised that the noise produced by jet engines is ranked among the loudest of human-generated noises.

Using turbulence to keep dams clean

Sediment builds up in reservoir water and can prevent dams from operating properly. EPFL researchers have come up with a method of keeping sediment in suspension and allowing it be flushed out.

Chinese national admits hacking US defense firms

A Chinese national pleaded guilty Wednesday to charges stemming from the hacking of trade secrets from US defense contractors, including plans for transport and fighter jets, officials said.

Hawaii Air Force unit getting own power grid that uses trash

The Air Force unit that defends Hawaii skies will get experimental energy technology that uses trash to generate power and relies on its own small electrical grid—a system intended to keep the unit operating if a bomb, ...

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