Discussion of vehicle and of flight made Apr 12 1961 by Major Y.A. Gagarin, in which he circled Earth, passing over Siberia, southeast across Pacific Ocean, then across South America, and northeastward over Africa back towards Russia; journey time of 108 min included time spent in climbing up to orbit and descending; maximum speed about 18,000 mph; launching mass of vehicle given as about 450 tons.
Soviet space flight facts reconciled
Engineering
Engineering ; 191 , n 4957
1961
Aufsatz (Zeitschrift)
Englisch
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