Kuznetsov Design Bureau
Н. Д. Кузнецова, also known as OKB-276) was a Russian design bureau for aircraft engines, administrated in Soviet times by Nikolai Dmitriyevich Kuznetsov.[3] In 2009 the Russian government decided to consolidate a number of engine-making companies in the Samara region under a new legal entity.The new engine eventually generated about 15,000 horsepower (11.2 megawatts) and it was also used in the large Antonov An-22 Soviet Air Force transport.[15] As of 2011, the aging NK-33 remains the most efficient (in terms of thrust-to-mass ratio) LOX/Kerosene rocket engine ever created.[18] The Antares rocket was successfully launched from NASA's Wallops Flight Facility on April 21, 2013.