Northrop Grumman, Yamaha Announce 'R-Bat' UAV
Northrop Grumman will offer the R-Bat unmanned rotorcraft based on Yamaha's RMax. (Photo: Northrop Grumman)
Northrop Grumman will offer the R-Bat unmanned rotorcraft based on Yamaha's RMax. (Photo: Northrop Grumman)

Northrop Grumman and Yamaha Motor USA have partnered to develop and market an unmanned “autonomous” rotorcraft system based on Yamaha’s RMax agricultural helicopter. The Rotary Bat (R-Bat) is targeted for search and rescue, power line inspection and forest fire observation missions.