Northrop YB-49 vs McDonnell Douglas YC-15
Top speed, range, size and history side by side. Each was built for its own job, so this shows how they differ, not which is better.
The McDonnell Douglas YC-15 is faster: 861 km/h against 793 km/h for the Northrop YB-49. The McDonnell Douglas YC-15 flies further: 3,689 km against 2,600 km for the Northrop YB-49. The Northrop YB-49 has the wider wingspan: 52.4 m against 33.6 m for the McDonnell Douglas YC-15. The McDonnell Douglas YC-15 is heavier at takeoff: 99 tonnes against 89 tonnes for the Northrop YB-49. The Northrop YB-49 first flew in 1947, 28 years before the McDonnell Douglas YC-15 (1975).
| Northrop YB-49 | McDonnell Douglas YC-15 |
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| Top speed | 793 km/h (493 mph) | 861 km/h (535 mph) |
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| Range | 2,600 km (1,616 miles) | 3,689 km (2,292 miles) |
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| Length | 16.2 m (53 ft) | 37.9 m (124 ft) |
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| Wingspan | 52.4 m (172 ft) | 33.6 m (110 ft) |
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| Max takeoff weight | 89 t (195,107 lb) | 99 t (219,137 lb) |
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| First flight | 1947 | 1975 |
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| Crew and capacity | 7 crew | About 12 t of cargo from short runways |
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| Engines | 8 × Allison J35 turbojet | 4 × Pratt & Whitney JT8D turbofan |
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| Built by | Northrop | McDonnell Douglas |
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| Country | USA | USA |
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