The B.21 was built for the Royal Air Force as a modern heavy bomber in 1932. Capable of carrying up to 2500 pounds of payload, the ‘Collie’ was one of Stockport Aviation’s earliest military designs. Despite it’s perceived modernity, the B.21 was replaced by newer, faster and larger designs by the outbreak of the Second World War.
Specifications
General Characteristics
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- Wingspan 58.8ft (17.9m)
- Length 48.6ft (14.8m)
- Height 13.2ft (4.0m)
- Empty Weight 11,046lbs (5,010kg)
- Loaded Weight 12,918lbs (5,859kg)
Performance
- Horse Power/Weight Ratio 0.076
- Wing Loading 24.0lbs/ft2 (117.0kg/m2)
- Wing Area 538.9ft2 (50.1m2)
- Drag Points 6580
Parts
- Number of Parts 134
- Control Surfaces 8
- Performance Cost 577
