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RD-020

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Status: Development ended 1957. Thrust: 103.00 kN (23,155 lbf). Specific impulse: 1,500 s. Burn time: 8,500 s.

Cancelled November 1957. Ramjet for Buran cruise missile. Boosted by 4 x Glushko-engined boosters. 8,500 km cruise at Mach 3.1 at 18-20 km altitude with 3,500 kg warhead. Wing area 98 square meters; diameter of ramjet 2.0 m. Never reached flight test. Thrust is maximum thrust at cruise altitude. Specific impulse is that at cruise design point.