美国几架航天飞机所发生的SEU研究

STUDY ON SEU OCCURRED ON BOARD OF SEVERAL SPACE SHUTTLES

本文对1991年美国发射的5架不同倾角不同高度的低地球轨道航天飞机所遇到的单粒子翻转事件进行了考查和研究．结果证实在极光区和南大西洋异常区仍可能发生大量单粒子事件，大大地影响到航天器的安全，对此文中给出了一些结论和建议．

In this paper, Single Events Upset(SEU) encountered by five low altitude orbit space shuttles with different inclinations and different altitudes launched in 1991 are investigated.The result shows that a number of SEUs can occur even in auroral area or south Atlantic abnormal area,threatening the security of space shuttles. Some Pertinent results and conclusions are obtained.