Encyclopedia : R : RQ : RQ4 (2 articles)

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RQ-4 Global Hawk
The RQ-4 Global Hawk unmanned reconnaissance aircraft The Northrop Grumman (formerly Ryan Aeronautical) RQ-4 Global Hawk (known as Tier II+ during development) is an unmanned aerial vehicle (UAV) used by the US Air Force as a surveillance aircraft. In role and design, it is somewhat similar to..

 

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