Drones have become a more common sight in our skies and are used for everything from consumer hobbies like aerial photography to industrial applications such as farming, surveillance and logistics.

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 ...

Kratos Defense & Security Solutions recently unveiled a version of its Valkyrie stealthy, aerial combat drone with internal landing gear to enable conventional takeoff and landing to give customers ...