Improvements were made on the NK-33 including the addition of filters to keep debris out of the engines. Test launches continued until the Kremlin canceled the program and ordered the destruction ...

TASS/. The Samara-based Kuznetsov enterprise in the Volga area plans to launch the production of new rocket engines NK-33 previously developed for the Soviet moon rocket N-1 to use them in Soyuz-2 ...