The Northrop Grumman B-21 Raider is an American strategic bomber in development for the United States Air Force (USAF) by Northrop Grumman. Part of the Long Range Strike Bomber (LRS-B) program, it is to be a stealth intercontinental strategic bomber that can deliver conventional and thermonuclear weapons.

The B-21 Raider will be capable of penetrating the toughest defenses to deliver precision strikes anywhere in the world. The B-21 is the future of deterrence and the world's first sixth-generation aircraft to reach the skies.

B-21「突襲者」 （英語： B-21 Raider） 匿蹤戰略轟炸機，舊稱 遠程打擊轟炸機 （英語： Long Range Strike Bomber，LRS-B），是 諾斯洛普·格魯曼 研發的遠程轟炸機 [2]，用於取代美國空軍現役的 B-1槍騎兵戰略轟炸機 和 B-2幽靈戰略轟炸機 [3]。

The B-21 Raider is named in honor of the historic Doolittle Raiders, U.S. Army Air Force men who are known for their surprise attack against Japan during World War II on April 18, 1942, which forced the Japanese to recall combat forces for home defense, and boosted morale among Americans and U.S. allies abroad.

The B-21 will deliver a new era of capability and flexibility through advanced integration of data, sensors and weapons. Capable of delivering both conventional and nuclear payloads, the B-21 will be one of the most effective aircraft in the sky, with the ability to use a broad mix of stand-off and direct attack munitions.

2022年12月3日 · As a dual-capable penetrating strike stealth bomber, the B-21 Raider is capable of delivering both conventional and nuclear munitions. It will be able to support joint and coalition forces...

2023年10月11日 · The design of Northrop Grumman’s B-21 Raider points to a conservative approach on the part of the U.S. Air Force’s Rapid Capabilities Office.

2022年12月3日 · To lower the infrared and acoustic “signatures,” the B-21 is designed to fly at subsonic speeds, powered by jet engines embedded into the wings like shark gills. High-tech coating materials...

The B-21 will deliver a new era of capability and flexibility through advanced integration of data, sensors and weapons. Capable of delivering both conventional and nuclear payloads, the B-21 will be one of the most effective aircraft in the sky, with the ability to use a broad mix of stand-off and direct attack munitions.

2024年6月18日 · Benefitting from more than three decades of strike and stealth technology innovation, the B-21 is the next evolution of the U.S. Air Force strategic bomber fleet and the world’s first sixth-generation aircraft to reach the skies.