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本文描述了飞机飞行高度的宇宙辐射环境，估算了在国内３０条航线上飞行的机组人员接受的宇宙辐射剂量，每条航线飞行的时间在０．８和３．７５小时之间。接每年飞行１０００小时计，他们在飞行中所受年有效剂量范围为０．１２至９．１７ｍＳｖ，相当于ＩＣＲＰ（１９９０）对职业人员推荐的年剂量限值（２０ｍＳｖ）的０．６～４６％。文中估计了辐射诱发致死癌症，遗传缺陷以及对未出生婴儿伤害的超额危险。由于３０年飞行接受职业照射而诱发的超额癌症死亡危险在０．１４／１０００和１１／１０００之间，平均超额危险约为６／１０００。
This article describes the cosmic radiation environment at the altitude of the aircraft and estimates the cosmic radiation dose received by crews flying on 30 domestic routes, each flying between 0.8 and 3.75 hours. Taking 1000 hours per year of flight, their annual effective dose in flight ranges from 0.12 to 9.17 mSv, which is equivalent to 0.6 to 46 (20 mSv) recommended by the ICRP (1990) for occupational personnel %. The article estimated the radiation-induced lethal cancer, genetic defects and excess risk of injury to unborn babies. The risk of death from excess cancer due to occupational exposure over 30 years of flight is between 0.14 / 1000 and 11/1000 with an average excess risk of about 6/1000.