原苏联和今天的俄罗斯空间局进行的载人航天飞行使用的航天器，自１９６７年至１９９３年间主要靠“联盟”系列飞船。最初，该系列飞船载３名航天员。自从“联盟”１１号飞船因座舱漏气使３名航天员丧生后，仅载２人，以保安全。后来从“联盟’Ｔ飞船开始又恢复载３名。迄今为 The spacecraft used by the former Soviet Union and today’s Russian Space Agency for manned space flight rely mainly on the “alliance” series of spacecraft from 1967 to 1993. Initially, the series contained three astronauts. Since the “Union” 11 spacecraft due to cockpit leaking three astronauts killed only two people in order to ensure security. Later, from the “Union” T spacecraft began to restore the set of 3. So far