ABOUT X-15 PROGRAM
The X-15 was a hypersonic rocket-powered research aircraft that flew 199 missions between 1959 and 1968. It reached speeds of Mach 6.7 and altitudes above 100 km, earning several pilots astronaut wings. The X-15 program generated invaluable data on hypersonic aerodynamics, heating, and control that directly informed the Space Shuttle design.
NOTABLE MISSIONS
| 🚀 Flight 90 u2013 Mach 6.7 speed record |
| 🚀 Flight 91 u2013 107.8 km altitude record |
| 🚀 Joe Walker flights above 100 km |
LEGACY & LASTING IMPACT
Pioneered hypersonic research, informed Shuttle thermal protection, multiple pilots earned astronaut wings
PROGRAM DETAILS
| Category | Program |
| Era | Pre-Space Race |
| Agency | NASA / USAF / US Navy |
| Country | United States |
| Start Date | 1959-06-08 |
| End Date | 1968-10-24 |
| Total Flights | 199 |
| Success Rate | 99.5% |
| Successor | Space Shuttle |
PROGRAM COST
| Original Cost | $300 million |
| Inflation-Adjusted | $2.5 billion (2020) |
KEY FIGURES
TECHNOLOGIES DEVELOPED
🏢 RELATED AGENCIES
