Air rings blown by dolphins swimming underwater and rings of smoke emitted by jet engines are just two examples of vortex rings. These doughnut-shaped structures and their mesmerizing movement have ...

The science pros at TKOR build a giant smoke ring toy to study air vortex motion.

Helicopter safety researchers are to undertake formal analysis of the hazardous vortex ring phenomenon and the effectiveness of an alternative recovery and escape technique. The vortex ring state is ...

Air cannons are fun, and became a part of mainstream culture with the popular Airzooka toy. Of course, cocking and firing the Airzooka gets tiring after a while, and they’re kind of a little small.