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Description
| Manufacturer: | Northrop |
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| Base model: | S-4 | ||
| Designation: | XS-4 | ||
| Designation System: | U.S. Air Force | ||
| Designation Period: | 1946-1947 | ||
| Basic role: | Supersonic Research | ||
| Status: | Experimental | ||
| First Flew: | 1948/12/16 | ||
| See Also: | X-4 | ||
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 | |
Examples of this type may be found at
| Museum | City | State |
| USAF Academy | USAF Academy | Colorado |
| United States Air Force Museum | Wright-Patterson | Ohio |
X-4 on display
United States Air Force Museum |
