Key Points and Summary - Lockheed Martin’s SR-72 Son of Blackbird or “Darkstar” aims to replace the SR-71 with hypersonic ISR—and possibly strike—using a turbine-based combined cycle (TBCC) that ...
Envisioned as an unmanned, reusable hypersonic intelligence, surveillance, and reconnaissance (ISR) aircraft, the much-touted SR-72 could, in theory, reach speeds of Mach 6 – double the speeds of the ...
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