Aero Spacelines Super Guppy vs Boeing YC-14
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 Boeing YC-14 is faster: 811 km/h against 463 km/h for the Aero Spacelines Super Guppy. The Boeing YC-14 flies further: 5,134 km against 3,211 km for the Aero Spacelines Super Guppy. The Aero Spacelines Super Guppy has the wider wingspan: 47.6 m against 39.3 m for the Boeing YC-14. The Boeing YC-14 is heavier at takeoff: 114 tonnes against 77 tonnes for the Aero Spacelines Super Guppy. The Aero Spacelines Super Guppy first flew in 1965, 11 years before the Boeing YC-14 (1976).
| Aero Spacelines Super Guppy | Boeing YC-14 |
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| Top speed | 463 km/h (288 mph) | 811 km/h (504 mph) |
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| Range | 3,211 km (1,995 miles) | 5,134 km (3,190 miles) |
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| Length | 43.8 m (144 ft) | 40.2 m (132 ft) |
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| Wingspan | 47.6 m (156 ft) | 39.3 m (129 ft) |
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| Max takeoff weight | 77 t (169,975 lb) | 114 t (251,104 lb) |
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| First flight | 1965 | 1976 |
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| Crew and capacity | 24.7 t payload | About 12 t of cargo from short runways |
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| Engines | 4 × T56 turboprop | 2 × General Electric CF6-50D turbofan |
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| Built by | Aero Spacelines | Boeing |
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| Country | USA | USA |
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