Vulcan B.1 vs B.2: Key Differences

Major Differences Between Vulcan B.1 and B.2

The Avro Vulcan B.2 was a significantly improved version of the original B.1, with several key differences:

Wing Design

• B.1: Straight leading edge wing
• B.2: Cranked leading edge wing with extended wingtips for improved high-altitude performance

Engines

• B.1: Four Bristol Olympus 101, 102, or 104 turbojet engines (11,000 lbf thrust each)
• B.2: Four Bristol Olympus 201 or 301 turbojet engines (17,000-20,000 lbf thrust each)

Performance

• B.1: Service ceiling of 50,000 ft, range of 2,300 miles
• B.2: Service ceiling of 55,000+ ft, range of 2,600+ miles

Avionics and Equipment

• B.2: More advanced navigation and bombing systems
• B.2: Enhanced electronic countermeasures (ECM) equipment
• B.2: Improved fuel system and electrical systems

External Appearance

• B.2: Longer, more pointed nose cone
• B.2: Redesigned air intakes
• B.2: Modified wing shape is clearly visible from above

The B.2 represented a major evolution of the Vulcan design, addressing limitations of the B.1 and ensuring the aircraft remained effective throughout the Cold War period.