The B-2 Spirit, also known as the Stealth Bomber, is a strategic, long-range, heavy bomber known for its low-observable (stealth) technology and ability to deliver both conventional and nuclear munitions. Built by Northrop Grumman, it first flew in 1989 and entered service in 1993. The B-2 is a “flying wing” design, meaning it has a broad wing with no fuselage or tail, which contributes to its stealth capabilities.

Here’s what you should know about it:
1. Stealth Technology:
- Low Observability:Â The B-2’s design and materials are optimized for low observability, meaning it’s very difficult for sophisticated air defense systems to detect, track, and engage it.
- Reduced Signatures:Â Its stealth features include reduced infrared, acoustic, electromagnetic, visual, and radar signatures.
- Design & Materials:Â The B-2’s distinctive flying-wing design, composite materials, and special coatings all contribute to its stealthiness.Â
2. Capabilities:
- Multi-Role:Â The B-2 can deliver both conventional and nuclear weapons, including precision-guided munitions.
- Penetrating Defenses:Â Its stealth enables it to penetrate deeply into enemy territory and strike heavily defended targets.
- Long Range:Â It has an intercontinental range and can fly more than 6,000 nautical miles without refueling.
- Large Payload:Â The B-2 can carry a payload of 40,000 pounds.
- High Altitude Operations:Â Its low observability allows it to operate effectively at high altitudes, increasing its range and sensor field of view.Â
3. History and Operations:
- Development:Â Development began in the late 1970s under the Advanced Technology Bomber program.
- First Flight:Â The first B-2 publicly flew on July 17, 1989.
- First Combat Use:Â It was first used in combat during the Kosovo War in 1999.
- Operational Base:Â Whiteman Air Force Base in Missouri is the only operational base for the B-2.
- Combat Missions:Â B-2s have participated in numerous combat operations, including Operation Allied Force, Operation Enduring Freedom, Operation Iraqi Freedom, and missions against ISIS and Houthi rebels.Â
4. Inventory and Cost:
- Limited Production:Â Due to budget cuts and the end of the Cold War, the planned production of 132 aircraft was reduced to 21.
- Current Inventory:Â The U.S. Air Force currently has 19 B-2s in service, after one was destroyed in a 2008 crash and another was retired after a 2022 accident.
- High Cost:Â The B-2 is the most expensive aircraft in the world, with a unit cost of over $2 billion (including development, testing, and production costs).
- Maintenance Costs:Â It also has high maintenance costs, estimated at around $40 million annually per aircraft.Â
5. Future:
- Phased Retirement:Â The B-2 is being phased out and is expected to be retired by 2032.
- Replacement:Â The Northrop Grumman B-21 Raider will eventually replace the B-2 as the Air Force’s premier stealth bomber.Â
In summary, the B-2 Spirit is a cutting-edge stealth bomber known for its unique design, advanced technology, and ability to penetrate defenses. While expensive to operate and maintain, it remains a valuable asset for the U.S. military until its planned replacement by the B-21 Raider.