North American X-15
Description: X-15 rocket-powered experimental aircraft that pushed the boundaries of speed, altitude, and spaceflight in the 1960s.
Launched from a B-52 mothership, it reached speeds over Mach 6 and altitudes above 350,000 feet, bridging aviation and astronautics.
X-15 Fueling, Pilot, Testing, Wind Tunnel, Takeoff, Chase Planes, Ground Tracking, B-52, Earth Curvature.