thumb|The Navy's unmanned X-47B receives fuel from an Omega K-707 tanker while operating in the Atlantic Test Ranges over the Chesapeake Bay. This test marked the first time an unmanned aircraft refueled in flight. X47 or X-47 may refer to:
thumb|The Navy's unmanned X-47B receives fuel from an Omega K-707 tanker while operating in the Atlantic Test Ranges over the Chesapeake Bay. This test marked the first time an unmanned aircraft refueled in flight. X47 or X-47 may refer to: Northrop Grumman X-47A Pegasus, a Northrop Grumman unmanned aircraft Northrop Grumman X-47B, a Northrop Grumman carrier-based unmanned aircraft Northrop Grumman X-47C, a proposed stealth unmanned aircraft
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).