Bondaryuk ramjet engine. EKR Stage 2. Study 1953. Study for an experimental winged cruise missile. Not developed but formed basis for Burya and Buran missiles.
Status: Study 1953. Date: 1953-54. Thrust: 6.13 kN (1,378 lbf). Specific impulse: 1,580 s. Burn time: 800 s.
Thrust is maximum thrust at cruise altitude. Specific impulse is that at cruise design point.