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Northrop Grumman B-21 Raider

Northrop Grumman · Bomber · USA · Digital Age (2010–present)

Northrop Grumman B-21 Raider — Bomber
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The Northrop Grumman B-21 Raider is the United States Air Force's sixth-generation stealth heavy bomber and the first all-new American bomber programme since the B-2 Spirit entered service in 1997. Northrop Grumman won the Long-Range Strike Bomber (LRS-B) contest over a Boeing/Lockheed Martin team in October 2015. The first aircraft was unveiled at Northrop's Plant 42 facility in Palmdale, California in December 2022 and made its maiden flight from Edwards AFB on 10 November 2023. Low-rate initial production is now under way, with at least three flying test articles. The USAF has committed to at least 100 aircraft, replacing the entire B-1 and B-2 fleets and eventually the B-52 as well.

The Raider's flying-wing planform echoes the B-2 in silhouette but is smaller, with a wingspan of about 140 ft against the B-2's 172 ft, and a far lower radar cross-section thanks to a generation of stealth-coatings advances and refined trailing-edge geometry. It was designed from the start around an open-systems architecture — a deliberate response to the painful integration costs of the B-2's bespoke avionics — so that new sensors, weapons, and software can be plugged in over decades without rebuilding the airframe. Operation will be optionally manned, with autonomous sorties planned for missions where a crew is not desired or possible. Two engines are buried internally; manufacturer and thrust class remain classified.

Programme cost has been closely guarded, but the Air Force has publicly committed to a per-aircraft target of roughly $700 million in 2024 dollars — well below the B-2's $2.1 billion. That figure reflects a larger production lot (at least 100 versus 21), lessons banked during the B-2 programme on building flying-wing structures, and a deliberate Air Force choice to field a smaller, more affordable airframe rather than a more capable B-2 successor. As of 2026 the unit-cost target is still being met, though oversight reports flag the usual pressures on stealth-coating sustainment and software-development schedules.

Initial fielding is expected in the mid-to-late 2020s. Ellsworth Air Force Base in South Dakota — currently a B-1 base — will be the first beddown location, followed by Whiteman AFB in Missouri (today the B-2's only base) and Dyess AFB in Texas (also a B-1 base). The Raider's mission set covers the full nuclear and conventional heavy-bomber portfolio: penetrating high-end air defences with the AGM-158B JASSM-ER and presumed future hypersonic stand-off weapons, delivering the B61-12 modular nuclear bomb, and serving as a forward-deployed sensor node within a wider networked-warfare construct.

The B-21 is named in honour of the Doolittle Raiders — the 80 airmen who launched B-25 Mitchells from the carrier USS Hornet in April 1942 to bomb Tokyo, the first U.S. retaliatory raid on the Japanese homeland after Pearl Harbor. Plant 42 in Palmdale, where the aircraft is built, also produced the B-2, the F-117, and a long line of black-programme Lockheed and Northrop airframes. Public information remains scarce; many programme details are deliberately classified to preserve mission surprise against future adversaries.

For Kids — a shorter, friendlier version

The B-21 Raider is a brand-new stealth bomber built for the American Air Force. It is made by a company called Northrop Grumman. The plane made its very first flight on November 10, 2023. That was a big day for aviation history!

The B-21 has a cool flying-wing shape. This means it looks like one giant wing with no tail. Its shape helps it hide from radar so enemies have a hard time spotting it. The B-21 is smaller than the older B-2 bomber, but it is still wider than many city blocks!

The Air Force plans to buy at least 100 of these planes. They will replace older bombers like the B-1 and the B-2. The B-21 was designed so that new tools and software can be added easily over the years. That makes it ready for the future.

The B-21 Raider gets its name from the famous Doolittle Raiders of World War Two. Engineers first showed the plane to the public in December 2022 in Palmdale, California. It is one of the most advanced aircraft ever built.

Fun Facts

  • The B-21 Raider made its first ever flight on November 10, 2023.
  • The B-21 is smaller than the older B-2, but its wingspan is still about 140 feet wide.
  • Its flying-wing shape makes it much harder for radar to detect than older bombers.
  • The American Air Force wants at least 100 B-21 Raiders in its fleet.
  • The B-21 will replace both the B-1 and B-2 bombers and may one day replace the B-52 too.
  • At 140 feet wide, the B-21's wingspan is longer than many school buildings.
  • Engineers designed the B-21 so new software and sensors can be added easily over decades.
  • Northrop Grumman beat out a team from Boeing and Lockheed Martin to build the B-21 back in 2015.

Kids’ Questions

What makes the B-21 Raider hard to detect?

The B-21 has a special flying-wing shape and advanced stealth coatings. These features make it very hard for radar to spot. Think of it like a plane that can sneak through the sky almost invisibly!

Why is it called the Raider?

The B-21 is named after the famous Doolittle Raiders from World War Two. Those were brave pilots who flew a daring mission. The name honors their courage.

How does the B-21 compare to the older B-2 bomber?

The B-21 is smaller than the B-2, whose wingspan was about 172 feet wide. The B-21 has a wingspan of about 140 feet. But the B-21 uses newer stealth technology, so it is even harder to detect than the B-2.

When did people first get to see the B-21?

The B-21 was shown to the public in December 2022 in Palmdale, California. It then flew for the first time in November 2023. Both events were very exciting for aircraft fans!

Variants

B-21 (production)
Production variant in low-rate initial production at Northrop Grumman's Plant 42, Palmdale, California. At least three test articles flying as of 2026. USAF committed to a 100-aircraft minimum fleet.
Optionally-manned configuration
Designed from inception to fly either crewed or fully autonomous. The autonomous mode has yet to be publicly demonstrated and remains a design path rather than an in-service mode.

Notable Operators

United States Air Force (sole operator)
Initial beddown will be at Ellsworth AFB (South Dakota), followed by Whiteman AFB (Missouri) and Dyess AFB (Texas). The 393rd Bomb Squadron has been identified as the type's first active unit.

Frequently Asked Questions

How much does a B-21 Raider cost?

The Air Force has publicly committed to a per-aircraft target of roughly $700 million in 2024 dollars (USAF B-21 fact sheet) — about a third of the B-2 Spirit's $2.1 billion (then-year), reflecting a much larger production run and a deliberate emphasis on affordability over performance extension.

How many B-21 Raiders will the USAF buy?

The publicly committed floor is 100 aircraft, with senior Air Force leaders periodically suggesting the eventual fleet could grow to 130–145 depending on geopolitical conditions and the retirement schedules of the B-1 and B-52.

When will the B-21 enter service?

Initial fielding is expected in the mid-to-late 2020s. The first flight took place on 10 November 2023, from Plant 42 to Edwards AFB; production aircraft are being delivered for testing and aircrew training at a low rate ahead of full deployment.

B-21 vs B-2: what's the difference?

The B-21 is a sixth-generation flying-wing stealth bomber that is smaller (140-ft span vs. 172 ft on the B-2), uses second-generation stealth coatings and shaping, has open-systems avionics designed for decades of upgrade, is being built in larger quantity (≥100 vs. 21), and costs about a third as much per airframe. Both share Northrop Grumman as prime contractor and the same Plant 42 production facility.

Where is the B-21 built?

At Northrop Grumman's Plant 42 in Palmdale, California — the same facility that produced the B-2 Spirit, the F-117 Nighthawk, the U-2, and a long history of secret Air Force airframes.

Why is it called the Raider?

Named in honour of the Doolittle Raiders — the crews who launched B-25 Mitchells from the carrier USS Hornet in April 1942 to bomb Tokyo, the first U.S. retaliatory raid on Japan's home islands after Pearl Harbor. Lt Col Richard Cole, the last surviving Raider, attended the naming ceremony in 2016.

Will the B-21 replace the B-52?

Eventually, yes. The B-21 will first replace the B-1 Lancer and B-2 Spirit through the late 2020s and 2030s. The B-52H, after the B-52J upgrade, is planned to remain in service into the 2050s before B-21 numbers grow large enough to phase it out.

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