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19FortyFive
19fortyfive.com > 2026 > 09 > lockheed-yf-12a-traveling-at-mach-3-2-and-75000-feet-fired-a-missile-that-hit-a-target-500-feet-right-above-the-ground

Lockheed YF-12A Traveling at Mach 3.2 and 75,000 Feet Fired a Missile That Hit a Target 500 Feet Right Above the Ground

6+ day, 17+ hour ago   (679+ words) Long before today’s Pentagon debates about whether future aircraft may need to combine stealth with extreme speed to survive increasingly sophisticated air defense systems, Lockheed had already built the YF-12A, a Mach 3 interceptor derived from the CIA’s secret A-12 reconnaissance…...

19FortyFive
19fortyfive.com > 2026 > 09 > nasa-x-43a-flew-at-mach-9-6-and-110000-feet-no-air-breathing-aircraft-has-gone-faster-in-the-22-years-since

NASA X-43A Flew at Mach 9.6 and 110,000 Feet — No Air-Breathing Aircraft Has Gone Faster in the 22 Years Since

6+ day, 21+ hour ago   (661+ words) The X-43A weighed about 3,300 pounds, was dropped from a B-52 on a Pegasus booster, and was built to be used once and never recovered. The whole program cost $230,000,000....

19FortyFive
19fortyfive.com > 2026 > 08 > 600000000-mach-22-x-20-dyna-soar-neil-armstrong-was-training-to-fly-a-spaceplane-the-pentagon-cancelled-in-1963

$600,000,000 Mach 22 X-20 Dyna-Soar: Neil Armstrong Was Training to Fly a Spaceplane the Pentagon Cancelled in 1963

3+ week, 3+ day ago   (854+ words) The X-20 Dyna-Soar didn't fail because the concept was wrong. It failed because it arrived sixty-three years before the US was ready to fly it without asking who was in the cockpit. And it offers a glimpse of what future wars…...