Since Glushko refused to work on such a design, Korolev eventually gave up and decided to enlist the help of Nikolai Kuznetsov, the OKB-276 jet engine designer.
Karena Glushko menolak mengerjakan desain tersebut, Korolev akhirnya menyerah dan meminta bantuan Nikolai Kuznetsov, desainer mesin jet dari biro OKB-276.