Encyclopedia Astronautica
207A


Russian surface-to-air missile. The 207A, with numerous improvements to the 205 which had been developed in a crash program, completed trials in 1955 and rapidly replaced the 205 in PVO service. It basically doubled all of the performance characteristics of the 205.

This upgrade of the V-300 missile was developed in 1953-1954 It blended features of the 205 and 206, resulting in increased range and capability against faster targets using the existing B-200 radar and other S-25 system elements. The warhead used a higher power explosive. The single chamber S2.260 engine was derived from the S2.253 engine developed by Isayev for the R-11 and R-11FM ballistic missiles. It used an air compressor for fuel feed and produced 8300 kgf. This development solved once and for all the problems of inadequate thrust and propellant feed that existed in earlier models. The problem of high frequency oscillations in the engine chamber were solved with a cross-shaped flange built into the injector face. The S2.260 was of smaller dimensions than the S2.253 thanks to the use of kerosene as a third component of the fuel mixture.

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Associated Countries
See also
  • Russian SAMs and ABMs Perhaps no missiles ever produced had as much historical influence as the surface-to-air missiles of the Soviet Union. Originally conceived to provide a defence against the American bomber fleets of the early Cold War, they decisively affected the turn of events when they shot down American U-2 reconnaissance aircraft over Russia and Cuba. Soviet-provided missiles accounted for a hundred American aircraft over North Vietnam and set the terms of the air battle. A new generation of missiles presented a huge technological surprise and took an awful toll of Israeli aircraft in the 1973 war. To this day, Russian surface-to-air missiles provide the only defence available to most countries against American bombers, and Russian man-portable anti-aircraft missiles are a major part of the terrorist threat. More...
  • S-25 First surface-to-air missile deployed by the Soviet Union. Under a crash program ordered by Stalin, development began in 1951, first guided launch was in 1953, and by 1956, 2,640 launchers were deployed in defence of Moscow. The system was upgraded with improved missiles and ground systems into the 1960's. More...
  • missile Guided self-propelled military weapon (as opposed to rocket, an unguided self-propelled weapon). More...

Associated Manufacturers and Agencies
  • Almaz Russian manufacturer of rockets. Almaz Design Bureau, Moscow, Russia. More...
  • Grushin Russian manufacturer of rocket engines and rockets. Fakel Machine Building Design Bureau named for P D Grushin, Khimki, Russia. More...

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