The US military X-47B UAV will serve the US navy well and will be the worst nightmare for the Russian military. The Northrop Grumman X-47B is a .br SUPER ADVANCED us navy X-47 stealth UAV Aircraft take off and landing A great idea for the US navy the x-47 uav aircraft will be useful in future conflicts.br SUPER ADVANCED us navy X-47 stealth UAV Aircraft take off and landing us navy us military stealth aircraft ucav The Northrop Grumman X-47B is a .br A great idea for the US navy the x-47 uav aircraft will be useful in future conflicts. The Northrop Grumman X-47B is a demonstration unmanned combat air .