B1 to B71 | All B-Series Bombers Explained

In this video, we go through the complete B-series bomber aircraft history of the United States — from the earliest experimental designs to modern stealth bombers. We start with the confusing early era when aircraft were named using different systems like MB (Manufacturer Bomber), LB (Light Bomber), HB (Heavy Bomber), and experimental designations. Then we move into the main B-series numbering system, beginning with early aircraft like the B-1, B-2, and Keystone bombers. From there, we explore how bomber technology rapidly evolved through the decades: Early biplane bombers and experimental prototypes The rise of all-metal monoplanes like the B-10 World War II heavy bombers such as the B-17 Flying Fortress, B-24 Liberator, B-25 Mitchell, B-26 Marauder, and B-29 Superfortress Experimental giants like the XB-15 and XB-19 Cold War jet bombers including the B-45 Tornado, B-47 Stratojet, B-50 Superfortress, and B-58 Hustler Strategic nuclear deterrence platforms like the B-36 Peacemaker and B-52 Stratofortress Advanced concepts and flying wing experiments like the XB-35 and YB-49 Modern stealth and supersonic developments including the B-1 Lancer, B-2 Spirit, and B-21 Raider We also cover numerous cancelled projects, prototype aircraft, and redesignations that never entered full production but still played a major role in shaping bomber development. By the end, you’ll understand how the U.S. bomber fleet evolved step by step — and how each aircraft contributed to the development of modern air power, from early wood-and-fabric biplanes to stealth flying wings that dominate today’s battlefield. 🛩️ Aircraft Covered in This Video (Full List) Martin MB-1, Martin MB-2, Martin NBS-1, Barling NBL-1, Huff-Daland LB-1, LB-2, LB-3, LB-4, LB-5, LB-6, LB-7, LB-8, LB-9, LB-10, LB-11, LB-12, LB-13, LB-14, HB-1, HB-2, HB-3, Martin MB-1, Martin MB-2, Curtiss B-2 Condor, Boeing XB-1, Keystone B-3, B-4, B-5, B-6, Douglas B-7, Fokker XB-8, Boeing YB-9, Martin B-10, Martin B-11, Martin B-12, Vultee B-13, Vultee B-14, Boeing XB-15, Martin XB-16, Boeing B-17 Flying Fortress, Douglas B-18 Bolo, Douglas XB-19, Boeing Y1B-20, North American XB-21 Dragon, Douglas B-23 Dragon, Consolidated B-24 Liberator, North American B-25 Mitchell, Martin B-26 Marauder, Douglas B-27 (proposal), North American B-28 (study), Boeing B-29 Superfortress, Consolidated B-32 Dominator, Martin XB-33, Lockheed B-34 Lexington, Northrop XB-35 Flying Wing, Convair B-36 Peacemaker, Boeing XB-38, Boeing XB-39, Boeing XB-40, Consolidated XB-41, Douglas XB-42 Mixmaster, Douglas XB-43 Jetmaster, Boeing B-44, North American B-45 Tornado, Convair B-46, Boeing B-47 Stratojet, Martin B-48, Northrop YB-49 Flying Wing, Boeing B-50 Superfortress, Martin XB-51, Boeing B-52 Stratofortress, Boeing B-53 (bomb), Boeing B-54 Ultrafortress, Boeing XB-55, Boeing B-56, English Electric B-57 Canberra, Convair B-58 Hustler, Boeing XB-59, Convair YB-60, Douglas B-66 Destroyer, Martin XB-68, Lockheed RB-69 Neptune, North American B-70 Valkyrie, Lockheed B-71 (study), Rockwell B-1 Lancer, Northrop B-2 Spirit, Northrop Grumman B-21 Raider. Also referenced systems and redesignations: FB-111 Aardvark, FB-22 concept, Douglas A-26 Invader (B-26 redesignation), B-61 bomb, B-53 bomb, and multiple canceled B-series projects (B-59 to B-67 range).