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6,854 spacecrafts were launched between 1957 and 2009 by 5,038 rockets. Of these launches, 4,621 were successfull and 417 failed to put their payloads into orbit. This represents a 91.7% rate of success or 11 successes for every 12 launch attempts.

        The most frequently used launcher is the Russian A Semiorka rocket: 1,698 were launched since 1957. Different models of this rocket were used to carry Sputnik, Vostok, Molniya and Soyuz spacecrafts; thus they are called “Sputnik” (or A), “Vostok” (A-1), “Molniya” (A-2-e) and Soyuz (A-2) launchers. This family has a 94.8% success rate.
        The other most used launchers are:
the Russian Kosmos C (461 launches, 95% success),
the American Atlas (347 launches, 88½% success),
the Russian D “Proton” (351 launches, 89% success),
the American Delta (347 launches, 96% success), 
the American Thor (244 launches, 86½% success),
the Russian F “Tsyklon” (235 launches, 96% success),
the American Titan (220 launches, 92% success), 
the European Ariane (193 launches, 94«% success),
the Russian Kosmos B (165 launches, 87% success) 
the American Space Snuttle (129 launches, 99% success)

      Table 11 lists the 48 launcher families in order of their success rate. The most reliable is the American Saturn Moon rocket, which score 100 % success in 28 launches. It is followed by the Space Snuttle (99%), the F “Tsyklon” (96%), the Delta (95,5%), the Kosmos C , A “Semiorka” and the Ariane (each with a 95% rate of success).

    See Table 11 – Launchers Ranking for complete information on all launchers.
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