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Hughes Aircraft H-4 Hercules "Spruce Goose"
Military
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Bell Textron X-1
Military
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|---|---|---|
| Quick facts | ||
| Manufacturer | Hughes Aircraft | Bell Textron |
| Type | Experimental & historic pioneers | Experimental & historic pioneers |
| Origin | 🇺🇸 United States | 🇺🇸 United States |
| First flight | 1947 | 1946 |
| Status | Retired | Retired |
| Units built | 1 | 3 |
| Unit cost | — | — |
| Dimensions | ||
| Length | 66.65 m | 9.40 m |
| Wingspan | 97.54 m | 8.50 m |
| Height | 24.18 m | 3.30 m |
| Wing area | 1,061.9 m² | 12.0 m² |
| Weights & fuel | ||
| Empty weight | 113,400 kg | 3,175 kg |
| Max. take-off weight | 181,437 kg | 5,557 kg |
| Performance | ||
| Max. speed | 351 km/h | 1,541 km/h |
| Cruise speed | 282 km/h | — |
| Max. Mach | — | Mach 1.45 |
| Range | 4,800 km | — |
| Service ceiling | 6,370 m | 21,900 m |
| Crew & capacity | ||
| Crew | 3 | 1 |
| Seats (max.) | 750 | — |
| Powerplant | ||
| Engines | 8 | 1 |
| Engine type | — | — |
| Engine model | Pratt & Whitney R-4360-4A Wasp Major | Reaction Motors XLR11-RM3 four-chamber rocket |
| Thrust (each) | — | 26.7 kN |
| Power (each) | 2,238 kW | — |
At a glance
Figures are compiled from public sources and may be approximate; they can vary by variant and configuration.