The Su-15 's maiden flight was on 30 May 1962 .
Its first flight was 30 May 1962 , with the aircraft entering service in 1967.Although many components of the Su-15 are similar or identical to the previous Su-9 and Su-11 ( NATO reporting name 'Fishpot ' ) , including Sukhoi 's characteristic rear-fuselage airbrakes , the new aircraft abandoned the shock-cone nose intake for side-mounted intakes feeding two powerful turbojet engines , initially the Tumanskii R-11 .