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20世纪载人航天时,人类的太空飞行还只限于近地球轨道。尽管由于地球磁场和浓密大气层的保护,来自外层电离辐射对人体的影响很小,但在过去40多年的载人航天中,美国、俄罗斯等航天大国的相关部门都很重视对空间辐射的研究。例如,在各次太空飞行中,航天器上都配备了辐射剂量监测仪。大量的太空辐射资料及实验数据表明:在近地轨道飞行中,航天员所受到的太空辐射剂量是在医学规定的安全范围内,对航天员的健康影响不大。21世纪,载人航天吹响了向火星进军的号角。到火星或更远的星球去航行不像登月,登
In the 20th century, manned space flight was limited to near-Earth orbit. Although the impact of ionizing radiation from the outer layer on the human body is very small due to the protection of the earth’s magnetic field and the dense atmosphere, the relevant departments of space powers such as the United States and Russia have attached great importance to the study of space radiation for the past 40 years in manned spacecraft . For example, on each space flight, the spacecraft is equipped with a radiation dose monitor. A large amount of space radiation data and experimental data show that astronauts receive radiation doses of space radiation within the safety limits prescribed by the medical sciences and have little effect on the astronauts’ health in orbit orbit. In the 21st century, manned spacecraft sounded the horn marched to Mars. To Mars or farther planet to go sailing is not like the moon, Gordon