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The North American X-15 is a hypersonic rocket-powered aircraft formerly operated by the United States Air Force and the National Aeronautics and Space Administration (NASA) as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, crossing the edge of outer space and returning with valuable data used…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| North American X-15 | First flight | 8 June 1959 | 1.00 | infobox |
| North American X-15 | Introduction date | 17 September 1959 | 1.00 | infobox |
| North American X-15 | Manufacturer | North American Aviation | 1.00 | infobox |
| North American X-15 | Number built | 3 | 1.00 | infobox |
| North American X-15 | Primary users | United States Air Force NASA | 1.00 | infobox |
| North American X-15 | Retired | December 1968 | 1.00 | infobox |
| North American X-15 | Type | Experimental high-speed rocket-powered research aircraft | 1.00 | infobox |
| North American X-15 | is a | hypersonic rocket-powered aircraft formerly operated by the United States Air Force and the National Aeronautics and Space Administration | 0.90 | text |
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