Military Hardware: Tanks, Bombers, Submarines and More At 13,000 MPH, DARPA’s Falcon HTV-2 Could Fly From NYC to LA in Under 12 Minutes at Mach 20, Nobody Has Built Anything Faster DARPA’s Falcon Hypersonic Technology Vehicle 2 (HTV-2) hit approximately Mach 20 — about 13,000 miles per hour or 3.6 miles per second. DARPA claimed... Brent M. Eastwood2 hours ago
Military Hardware: Tanks, Bombers, Submarines and More NASA’s X-43D Was Designed to Fly at Mach 15 — Engineers Warned the Aircraft Would Have Literally Melted in Flight NASA’s X-43D was designed to fly at speeds approaching Mach 15 — roughly 11,000 miles per hour — using a hydrogen-fueled scramjet to sustain... Jack Buckby6 days ago
Military Hardware: Tanks, Bombers, Submarines and More NASA’s First X-43A Crashed Into the Pacific in 2001 — The Two That Followed Set Hypersonic Records No Aircraft Has Beaten in 22 Years In the early 2000s, NASA was among the first to achieve sustained hypersonic flight. As part of the broader Hyper-X program, NASA developed the... Isaac Seitz6 days ago
Military Hardware: Tanks, Bombers, Submarines and More At 11,400 MPH, NASA’s X-43D Could Have Crossed the Atlantic in 18 Minutes — 20 Years After Cancellation, It Still Has Never Flown NASA’s X-43D was designed to fly at Mach 15 — roughly 11,400 miles per hour, fast enough to cross the Atlantic Ocean in 18... Isaac SeitzMay 8, 2026
Military Hardware: Tanks, Bombers, Submarines and More The Mach 15 X-43D ‘Hypersonic Scramjet’ Has a Message for the U.S. Air Force Key Points and Summary – NASA Planned a Mach 15 X-43D. It Never Flew — and That Matters Now. -NASA’s X-43A proved that an... Harry J. KazianisNovember 19, 2025