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ULA Launches Final Delta Rocket After 64 Years
After 64 years of service, ULA on Tuesday launched its last-ever Delta rocket carrying a classified payload for the U.S. National Reconnaissance Office (NRO). "The powerful booster departed Space Launch Complex-37 (SLC-37) at Cape Canaveral Space Force Station in Florida at 12:53 p.m. EDT (1653 GMT)...
After 64 years of service, ULA on Tuesday launched its last-ever Delta rocket carrying a classified payload for the U.S. National Reconnaissance Office (NRO). From the report: That spectacle, which was unique to the Delta IV in its heaviest configuration, was the result of hydrogen building up in the flame trench and then rising up alongside the rocket after it was used to cool down the three RS-68A engines to cryogenic temperatures. ULA is retiring the Delta IV, and eventually its other legacy rocket, the Atlas V, in favor of its newly introduced Vulcan, which flew a near-perfect first mission in January.
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