Documents / FOIA release
This is National Intelligence Estimate 11-5-61, Soviet Technical Capabilities in Guided Missiles and Space Vehicles. It was submitted by the Director of Central Intelligence and concurred in by the United States Intelligence Board on 25 April 1961. The estimate assesses Soviet surface-to-air, antimissile, air-to-air, air-to-surface, ballistic, ICBM, naval and space programs. It concludes that the first Soviet ICBM unit was probably operational around 1 January 1960. It also says there is no evidence the Soviets are developing offensive space weapons. It contains no UFO material.
SECR-ET Figure 11 34' approx. Warhead Fuze Guidance Power Beacon Nitrogen Tank Missile Fin Span 5.4' Control Engine Probe Booster Fin Span 9 Booster Fuel and Oxidizer 600278407 MOSCOW PARADE, NOVEMBER 1957 SURFACE-TO-AIR MISSILE (GUIDELINE) 5A-2-ESTIMATED MISSILE SYSTEM CHARACTERISTICS Maximum Intercept Altitude Maximumintercept Range Warhead Weight Maximum Velocity Propulsion System Booster Sustainer CEP 60,000 - 80,000 feet Dependent on Target 25 - 30 Nautical Miles Type and Approach 500 Pounds Mach 3 Solid Propellant Liquid Propellant WO Feet SA-2 MISSILE SYSTEM (INCLUDING GUIDELINE MISSILE) .-.11.11M11.1111•Mer.R.
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FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is above. 101 pages are in the text index: search them above, or from the library's search.