What is the B-2 Spirit? Northrop Grumman’s Legendary Stealth Bomber
Since 1989, the B-2 Spirit, which has been in the sky, with 21 units produced and still maintaining its status as the world’s only operational strategic stealth bomber, is one of the most striking engineering achievements in military aviation history. This “flying-wing” design, signed by Northrop Grumman, can carry a weapon load of 23 tons while leaving a radar signature as small as a bug.
At a Glance
Stealth Class
~0.001 m² RCS
Radar cross-section the size of a bug
Range
11,100 km
Unlimited without fuel; unlimited with air refueling
Payload
23,000 kg
Nuclear or conventional
Unit Cost
2.1 billion $
The most expensive aircraft ever produced
What is the B-2 Spirit?
The B-2 Spirit is a two-person crew, four-engine strategic stealth bomber developed by Northrop Grumman for the United States Air Force (USAF). It made its first flight on July 17, 1989, and entered operational service in 1997. The most distinctive feature of the aircraft is its flying-wing design: there are no traditional tail surfaces; the entire structure is a single large wing. This design dramatically reduces the radar cross-section (RCS) and increases fuel and weapon capacity.
What is it Used For?
- Strategic nuclear deterrence: The core element of the air leg of the U.S. land-sea-air nuclear triad; carries B61-7/11/12 and B83-1 bombs.
- Piercing advanced defended areas: Reaches target areas undetected while systems like S-400 or HQ-9 are active.
- Large area armament: Carries 80 x 500 lb bombs or 16 x 2,000 lb JDAMs in a single pass.
- Bunker-buster missions: The only platform capable of using GBU-57 MOP (13,600 kg); targets deeply buried facilities.
- Global reach: Can reach any point in the world without fuel from Whiteman AFB; mission duration extends further with air refueling.
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Flying-Wing Design
No vertical tail — the entire structure is a single piece wing. Radar signature is minimized, fuel capacity is maximized.
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Multi-Layered Stealth
Shape + radar-absorbing coating (RAM) + special exhaust design. Both radar and infrared signatures are suppressed.
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Nuclear + Conventional
A wide range of munitions from the B61-12 nuclear bomb to the GBU-57 MOP bunker-buster.
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Global Range
11,100 km without fuel. Air refueling with KC-135/KC-46: unlimited range, 44-hour mission record.
Difference Between B-2 Spirit and B-21 Raider
| Criteria | B-2 Spirit | B-21 Raider |
|---|---|---|
| First flight | July 17, 1989 | November 10, 2023 |
| Number of engines | 4 × GE F118-GE-100 | 2 × P&W PW9000 family |
| Range | 11,100 km | 9,300+ km |
| Payload | ~23,000 kg | ~14,000 kg |
| Stealth generation | 5th generation (shape + RAM) | 6th generation (digital stealth) |
| Unmanned capability | No | Yes (optionally unmanned) |
| Production quantity | 21 (19 active) | 100+ planned |
| Unit price | ~2.1 billion USD | ~692 million USD |
Technical Specifications
| Feature | Value |
|---|---|
| Crew | 2 pilots |
| Length / Wingspan | 21.0 m / 52.4 m |
| Empty weight / MTOW | 71,700 kg / 170,550 kg |
| Engine | 4 × GE F118-GE-100 (77 kN / 17,300 lbf) |
| Maximum speed | Mach 0.95 (~1,010 km/h) |
| Range (unrefueled) | 11,100 km (6,000 nautical miles) |
| Ceiling altitude | 15,200 m (50,000 ft) |
| Weapon capacity | 23,000 kg max (50,000 lb) |
| RCS (estimated) | ~0.001 m² |
| Nuclear munitions | B61-7, B61-11, B61-12, B83-1 |
| Conventional munitions | GBU-36/37 JDAM, GBU-57 MOP, JASSM, JSOW, CBU-87/89/97 |
| Refueling | Compatible with KC-135 / KC-46 air refueling |
Who Bought, For How Much?
The B-2 Spirit was never exported. All 21 units were delivered to the USAF; one was lost in an accident in Guam in 2008 (Spirit of Kansas). 19 are still active.
| Operator | Quantity | Notes |
|---|---|---|
| USAF — 509th Bomb Wing | 19 active | Whiteman AFB, Missouri |
| Total production | 21 (1 prototype + 20 production) | Spirit of Kansas lost in 2008 |
| Total program cost | ~44.75 billion USD | Per aircraft ~2.1 billion USD |
| Annual maintenance (per aircraft) | ~3.4 million USD/year | Stealth coating maintenance is the largest item |
Historical perspective: The total program cost of the B-2 is $44.75 billion — approximately 1.5 times Turkey’s 2024 defense budget. This figure explains why the Turkish defense industry prefers to meet the same strategic missions with different platforms.
Comparison with Turkish Equivalent
| Criteria | B-2 Spirit | Turkish Equivalent |
|---|---|---|
| Flying-wing stealth | B-2 Spirit (4 engine, manned) | TAI ANKA-III — domestic flying-wing stealth UAV (2023) |
| Long-range strategic strike | 11,100 km range, 23 tons | ROKETSAN TAYFUN (>500 km) + GEZGİN (>800 km) |
| Large payload capacity | GBU-57 MOP (13,600 kg) | BAYKAR AKINCI (1,350 kg payload, 40,000 ft) |
| Crew risk | 2 pilots / mission | ANKA-III, AKINCI — unmanned |
| Export independence | ITAR restricted — zero export | 100% domestic — open to export |
| Unit cost | 2.1 billion USD / aircraft | TAYFUN ~3-5 million USD/missile |
Strategic Difference: TAI’s ANKA-III is a fully unmanned and exportable platform that shares the same aerodynamic principle (flying-wing stealth) as the B-2. Turkey is realizing this design philosophy at a much lower cost and with export independence.
Frequently Asked Questions
Why is the B-2 Spirit so expensive?
Three main reasons: (1) Only 21 were produced — development costs were spread over very few platforms. (2) Stealth coating (RAM) is extremely expensive and requires constant maintenance in a specially climate-controlled hangar. (3) The assembly complexity of the tailless flying-wing structure increases production time.
Three main reasons: (1) Only 21 were produced — development costs were spread over very few platforms. (2) Stealth coating (RAM) is extremely expensive and requires constant maintenance in a specially climate-controlled hangar. (3) The assembly complexity of the tailless flying-wing structure increases production time.
Has the B-2 been in combat?
Yes: Kosovo 1999 (first combat flight, 44-hour Missouri round-trip), Afghanistan 2001, Iraq 2003, Libya 2011, ISIS 2015-2019, and most recently the 2025 Yemen Houthi attacks. In each operation, it took off from Whiteman AFB and completed the mission with aerial refueling.
Yes: Kosovo 1999 (first combat flight, 44-hour Missouri round-trip), Afghanistan 2001, Iraq 2003, Libya 2011, ISIS 2015-2019, and most recently the 2025 Yemen Houthi attacks. In each operation, it took off from Whiteman AFB and completed the mission with aerial refueling.
Why was only 21 B-2s produced?
With the end of the Cold War, the original target of 132 was reduced to 75, and then to 21. The unit cost exceeding $2 billion increased political pressure; Congress rejected additional production requests.
With the end of the Cold War, the original target of 132 was reduced to 75, and then to 21. The unit cost exceeding $2 billion increased political pressure; Congress rejected additional production requests.
What is replacing the B-2?
The B-21 Raider. The first squadron will be delivered to Ellsworth AFB in 2027; B-2s will be gradually phased out by the mid-2030s.
The B-21 Raider. The first squadron will be delivered to Ellsworth AFB in 2027; B-2s will be gradually phased out by the mid-2030s.
Is Turkey making an aircraft similar to the B-2?
TAI ANKA-III is realizing the flying-wing stealth philosophy unmanned — a domestic and much cheaper interpretation of the B-2’s concept, not its manned version. The same aerodynamic stealth logic, zero crew risk, and export freedom.
TAI ANKA-III is realizing the flying-wing stealth philosophy unmanned — a domestic and much cheaper interpretation of the B-2’s concept, not its manned version. The same aerodynamic stealth logic, zero crew risk, and export freedom.
Summary
| Title | Detail |
|---|---|
| Platform type | Strategic stealth bomber (flying-wing) |
| Manufacturer / Operator | Northrop Grumman / USAF 509th Bomb Wing |
| First flight / Entry into service | July 17, 1989 / 1997 |
| Active fleet | 19 aircraft (Whiteman AFB, Missouri) |
| Unit cost | ~2.1 billion USD (FY2020) |
| Successor | B-21 Raider (operational in 2027) |
Related News
What is the B-21 Raider?
The successor to the B-2 — a 6th generation stealth bomber.
What is ANKA-III?
Turkey’s flying-wing stealth UAV — an unmanned interpretation of the B-2 philosophy.
What is the F-35 Lightning II?
A 5th generation fighter aircraft that completes B-2 missions.
Northrop Grumman — Company Profile
The manufacturer of the B-2 and B-21.
Sources
- Northrop Grumman — B-2 Spirit press page (northropgrumman.com)
- U.S. Air Force — B-2 Spirit official fact sheet (af.mil)
- Wikipedia — “Northrop Grumman B-2 Spirit” (English)
- Air Force Magazine — B-2 Spirit retirement plan (2023-2025)
- The Aviationist — B-2 Yemen operation analysis (2025)
- Congressional Research Service — B-2 Spirit Program (2020)
