Researchers have unveiled a bird-shaped robot that can hop, walk and leap into flight just like a raven. The new machine, ...

Their Robotic Avian-inspired Vehicle for multiple ENvironments (RAVEN) trades traditional landing gear for a pair ... are less energy-efficient than fixed-wing drones that use a single motor ...

Most drones on the market are rotary-wing quadcopters, which can conveniently land and take off almost anywhere. The problem is they are less energy-efficient than fixed-wing aircraft, which can fly ...

With legs and wings, the RAVEN can take off with no runway, and even hop along the ground. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.