 Pavel Sukhoy (head of the OKB Sukhoy) immediately proposed to install the new engine on his Su-11 jets, starting a long collaborative work with Lyulka.He later designed the AL-5, AL-7, AL-21 turbojet engines which were installed on the Su-7, Su-17, Su-20, Su-24, MiG-23 and other Soviet military aircraft.Lyulka also designed the upper stage engines for the Soviet moon rocket N1.