description Boeing B-1B Lancer Overview
The B-1B Lancer is a four-engine supersonic bomber developed for the United States Air Force as a successor to the B-52's deep-penetration role. Its variable-sweep wings allow a relatively efficient configuration for takeoff and loitering and a swept configuration for high-speed flight, while its design supports low-level operations and carriage of weapons in internal bays. The B-1B entered U.S. service in the 1980s and has been used as a conventional bomber.
It is intended for long-range military strike missions, not civil transport.
help Boeing B-1B Lancer FAQ
Why does the B-1B Lancer have variable-sweep wings?
The wings can stay relatively forward for takeoff and efficient loitering, then sweep back for high-speed flight. This gives the four-engine bomber more flexibility across different phases of a mission.
When did the B-1B Lancer enter U.S. Air Force service?
The B-1B entered service in 1986. It was developed as a successor to the B-52's deep-penetration bomber role.
How does the B-1B differ from the Boeing B-52 Stratofortress?
The B-1B uses four engines and variable-sweep wings, while the B-52 uses eight engines and a fixed swept-wing layout. The Lancer was designed for much higher speed and low-level penetration than the older B-52 concept.
Is the B-1B Lancer a supersonic aircraft?
Yes. Its swept-wing configuration allows supersonic flight, a capability that distinguishes it from the subsonic B-52.
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