Soyuz 21
苏联航天计划 · 联盟号 · 1/5 号发射台
任务简介
联盟21号是首次前往Salyut 5军用空间站的载人任务。任务于1976年7月6日12:08:45 UTC开始，将指令长鲍里斯·沃利诺夫和飞行工程师维塔利·若洛博夫送入轨道。飞船于7月7日与空间站对接。在驻站期间，机组人员进行了科学实验，包括首次使用Kristall炉进行晶体生长、太阳观测以及军事性质的实验。 任务原计划持续60天，但在第42天出现了紧急情况，包括多个机载系统关闭，其中氧气再生系统也关闭了。机组人员恢复了飞船的功能，但沃利诺夫和若洛博夫的健康状况恶化，任务不得不提前结束。 任务在49天后于1976年8月24日18:32:17 UTC以一次粗糙的着陆结束。
原文
Soyuz 21 was the first crewed mission to the Salyut 5 military space station. The mission began on July 6, 1976, 12:08:45 UTC, launching Commander Boris Volynov and Flight Engineer Vitaly Zholobov into orbit. Spacecraft docked with the station on July 7. During their stay on the station, crew conducted scientific experiments, inculding the first use of Kristall furnace for crystal growth, solar observations and experiments of military nature. The mission was expected to last for 60 days, but emergincies occured on the 42nd day, which included shutdown of several onboard systems, oxygen regeneration system among those. Crew restored functionality of the spaceship, but both Volynov and Zholobov's health was deteriorated, and mission had to end early. The mission concluded after 49 days with a rough landing back on Earth on August 24, 1976, 18:32:17 UTC.
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