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The competition heats up: An engine that Russia has developed for its Angara rocket has now been tested and is ready for shipment to the U.S. for use in the first stage of Orbital ATK’s Antares rocket.
This new engine will replace the refurbished Soviet-era engines Antares had been using previously that had caused the October launch failure. Note also that since Antares is not a military rocket, it does not fall under the Congressional ban for Russian engines that limits their use on ULA’s Atlas 5 rocket. As the article notes,
On Jan. 16, 2015, RKK Energia, parent company of NPO Energomash, announced that it had reached an agreement with the American company Orbital Sciences Corporation, OSC, on the export of RD-181 engines for the first stage of the Antares rocket, thus replacing the NK-33 engines previously used on the launcher. The contract, worth around $1 billion, was actually signed and ratified by the Russian government in December 2014. According to the document, a total of 60 RD-181 engines would be delivered to OSC beginning in June 2015.
This deal means that Antares will likely be back in business soon, though it will still be dependent on Russian-built equipment, which carries its own risks. It also means that Orbital ATK will not be able to sell Antares to the U.S. military, limiting its marketability.