Lockheed XFV vs Northrop YA-9
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 Lockheed XFV is faster: 933 km/h against 837 km/h for the Northrop YA-9. The Northrop YA-9 flies further: 4,800 km against 800 km for the Lockheed XFV. The Northrop YA-9 has the wider wingspan: 17.4 m against 8.4 m for the Lockheed XFV. The Northrop YA-9 is heavier at takeoff: 19 tonnes against 7.35 tonnes for the Lockheed XFV. The Lockheed XFV first flew in 1954, 18 years before the Northrop YA-9 (1972).
| Lockheed XFV | Northrop YA-9 |
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| Top speed | 933 km/h (580 mph) | 837 km/h (520 mph) |
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| Range | 800 km (497 miles) | 4,800 km (2,983 miles) |
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| Length | 11.2 m (37 ft) | 16.3 m (53 ft) |
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| Wingspan | 8.4 m (27 ft) | 17.4 m (57 ft) |
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| Max takeoff weight | 7.35 t (16,204 lb) | 19 t (41,799 lb) |
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| First flight | 1954 | 1972 |
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| Crew and capacity | 1 pilot | 1 pilot |
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| Engines | 1 × Allison XT40 turboprop with two propellers spinning opposite ways | 2 × Lycoming YF102 turbofan |
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| Built by | Lockheed | Northrop |
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| Country | USA | USA |
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