- The B-21 Raider stealth bomber, manufactured by Northrop Grumman, is designed to overcome the limitations of the US Air Force’s three older bombers, the B-52 B-1 Lancer and the B-2 Spirit.
The B-52 bomber has been in service since the 1950s and, despite numerous upgrades, faces limitations due to its long lifespan and structural wear.
The B-1 bomber has also suffered from structural stress and fatigue due to years of flying at high speeds and at low altitudes.
According to the report, the 21-B is designed to increase survivability against advanced defense systems, utilize stealth technologies, and facilitate easier upgrades of military technologies
