The Northrop Grumman X-47B is a demonstration unmanned combat aerial vehicle (UCAV) designed for aircraft carrier -based operations.

In 2013, these aircraft were used to demonstrate the first-ever carrier-based launches and recoveries by a relevant, low-observable, unmanned autonomous aircraft. In April 2015, the X-47B once again made aviation history by successfully conducting the first-ever Autonomous Aerial Refueling (AAR) of an unmanned aircraft.

2013年5月14日，X-47B于“乔治·布什号”航空母舰（CVN-77）成功进行起飞测试，并于一小时后降落 马里兰州 帕杜克森河海军航空站。 该项目已被取消。 美国海军决定开发一种舰载无人加油机，取代隐形无人攻击机。 美国军火商诺·格（诺思罗普·格鲁曼）公司与 美国国防部 国防高级研究计划局 (DARPA)签署了一项该作战评估项目合同，继续为美军联合无人空中战斗系统 (J-UCAS)验证计划发展X-47B无人战斗机。 合同期限为5年，总额约10.04亿美元。

X-47B試驗機 「鹹狗」 （Northrop Grumman X-47B，Salty Dog） [2] 是一架試驗型 無人駕駛戰鬥機，由美國國防技術公司 諾斯羅普·格魯曼 開發。 X-47項目開始於 國防高等研究計畫署 的J-UCAS計畫，現在已經是 美國海軍 旨在發展艦載無人飛機的UCAS-D計畫的一部分。 X-47B於2011年2月4日在愛德華茲空軍基地完成首飛測試。 2013年5月14日，X-47B於 布希號 （CVN-77）成功進行起飛測試，並於一小時後降落 馬里蘭州 帕圖森河海軍航空站。 [3] 同年7月10 …

2021年2月19日 · The X-47B is an unmanned combat air system carrier (UCAS) offered by Northrop Grumman for the US Navy (USN). The X-47B is powered by a Pratt & Whitney F100-PW-220U engine and exhaust system. Credit: Alan Radecki. The X-47B is an unmanned strike fighter-sized aircraft developed by Northrop Grumman. Credit: US Navy.

The X-47A is powered by a single Pratt & Whitney Canada JT15D-5C small high-bypass turbofan engine with 3,190 lbf (14.2 kN) thrust. This engine is currently in use with operational aircraft such as the Aermacchi S-211 trainer. The engine is mounted on the demonstrator's back, with the inlet on top behind the nose.

The Northrop Grumman X-47C is designed to be a stealth, unmanned aircraft. [1] . Its ancestors the X-47A and the X-47B made this unmanned aircraft possible to carry out the "stealth" that was needed in order to be undetectable by radar. [1] .

The Northrop Grumman X-47B is an demonstration Unmanned Combat Aerial Vehicle (UCAV) which first flew in February 2011. The X-47 project began as part of DARPA’s J-UCAS program, and is now part of the United States Navy’s UCAS-D (Unmanned Combat Air System Demonstration) program, which aims to create a carrier-based unmanned aircraft.

X-47无人实验机项目是美国国防高等研究计划署（英语：Defense Advanced Research Projects Agency， 缩写： DARPA）的联合 无人战斗机 系统计划（英语：Joint Unmanned Combat Air Systems ，缩写：J-UCAS）中 诺斯洛普·格鲁门公司 的投标机型项目，绰号“ 飞马 ”（Pegasus）。 该项目主要分为三个部分，X-47A部分，是诺格最早的 投标 方案，主要用户面向 美国空军；2006年4月，J-UCAS计划终止，转而由美国空军和 美国海军 独立计划。

The Northrop Grumman X-47B is a demonstration unmanned combat aerial vehicle (UCAV) designed for aircraft carrier -based operations.