The X-43A Flew at Nearly 2 Miles Per Second — It Remains the Fastest Air-Breathing Aircraft Ever Built and the Record Has Stood for 22 Years

The X-43A Flew at Nearly 2 Miles Per Second — It Remains the Fastest Air-Breathing Aircraft Ever Built and the Record Has Stood for 22 Years

7,346 MPH — The X-43A Was So Fast It Could Cross the Atlantic Ocean in 25 Minutes and Nobody Has Built Anything Faster As the United States continues to accelerate funding for hypersonic weapons in response to advances being made by China – allocating $3.9 billion in fiscal year 2026 specifically for hypersonic weapons projects – it’s worth remembering that this is really an effort to field a capability that it demonstrated more than two decades…