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ULA's (Boeing/Lockheed) Atlas V has been using Russian RD-180 engines, and Orbital Science's Antares has used Russian NK-33 and RD-191 engines. None of these w
by MichaelCollins 4y ago
ULA's (Boeing/Lockheed) Atlas V has been using Russian RD-180 engines, and Orbital Science's Antares has used Russian NK-33 and RD-191 engines.
None of these were borrowed though, since they're all single-use only. Only SpaceX lands and reuses their first stage boosters.