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Description
| Manufacturer: | Northrop | |
| Base model: | X-4 | |
| Designation: | X-4 | |
| Designation System: | U.S. Air Force | |
| Designation Period: | 1948-Present | |
| Basic role: | Research | |
| First Flew: | 1948/12/16 | |
| See Also: | ||
| Serial/Bureau Number: | 46-676 | |
| Location: | USAF Academy, USAF Academy Colorado | |
Specifications
| Length: | 23' 3" | 7.0 m | |
| Height: | 14' 10" | 4.5 m | |
| Wingspan: | 26' 10" | 8.1 m | |
| Gross Weight: | 7,549 lb | 3,424 kg | |
| Max Weight: | 7,550 lb | 3,424 kg | |
Propulsion
| No. of Engines: | 2 | ||
| Powerplant: | Westinghouse XJ30-WE | ||
| Thrust (each): | 1,600 lb | 725 kg | |
Performance
| Cruise Speed: | 480 mph | 772 km/h | 417 kt |
| Max Speed: | 640 mph | 1,030 km/h | 556 kt |
| Ceiling: | 44,000 ft | 13,411 m | |