The K-Max UAS (Unmanned Air Systems) is helicopter with intermeshing rotors (synchropter) drone of the US Marine Corp developed by Kaman and Lockheed-Martin , capable of carrying 2.7 tons of equipment (more than its own weight) and fly to more than 4000 meters (15500 feet).
This device, which was the subject of a contract of $ 45.8 million , with a flight autonomy of 400 km , an action radius of 556 km depending the load carried, is very economical: the cost of a flight hour is 1 100 dollars (900 euros). Its use avoids the use of truck convoys, vulnerable to ambushes in battle zones.
It is tested successfully since 17 December 2011 . Two K-Max UAS of the USMC and have conducted more than 230 attractions and delivered, two forward bases in the south, close to 500 tonnes of freight .
The Lockheed Martin Squad Mission Support System Unmanned Ground Vehicle equipped with a Gyrocam 9-inch mid-wave, surveillance sensor was flown by sling load into the “hostile” area using a Lockheed Martin K-MAX unmanned helicopter, and a tactical resupply and surveillance mission was conducted in autonomous and tele-operated modes.