US start-up Hermeus has flown its first supersonic-capable aircraft, the Quarterhorse Mk 2.1, marking a significant step toward achieving Mach 5 hypersonic flight. The unmanned vehicle completed its ...
President Trump re-upped his claim that Russia stole the plan for hypersonic missiles during the Obama administration. “Russia stole the design, they got it from us,” Mr. Trump said in an interview ...
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