一、RVSM(降低垂直最小间隔)的发展史在20世纪70年代中期,由于世界燃油的短缺和油价的上涨唤醒了世界航空界合理、有效利用空域的意识,他们将目光集中在FL290以上飞行高度层的垂直间距由600米(2000ft)减小到300米(1000ft)的设想上,并为此理论进行了详细的符合性实验,结果在1980年的国际民航 I. RVSM (Reduced Vertical Minimum Separation) History In the mid-1970s, due to the shortage of fuel and rising oil prices in the world, which aroused the awareness of the world aviation community in the rational and effective use of airspace, they focused their attention on the flight altitude above FL290 Layer vertical spacing from 600 meters (2000ft) to 300 meters (1000ft) of the idea, and for this theory conducted a detailed compliance test, the results of the 1980 International Civil Aviation