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2008年4月号杂志上“帮我找错”的美军领航员六分仪训练历史照片刊发后,许多读者纷纷发来信函和电邮询问关于六分仪的问题。六分仪的确是个奇妙的小东西,为了满足读者的要求,笔者特撰此文,对六分仪做一点儿初步的介绍。我们知道,航空器的导航有诸多方法,其中天体导航是出现最早也是较为可靠的方法之一。天体导航的基本理论建立在遥远的天体和地球相对位置的确定性上,通过千百年的观察,人们已经掌握了许多天体的运行规律,知道它们在何时会出现在何种位置上,这样,天体就可以成为飞行器导航定位的可靠参照系。利用天体导航,就必须设法测定天体的位置,这就要用到一种特殊的仪器设备,今天的领航员(也包括航海人员)都仍然需要掌握它的使用方法,这种小巧的仪器,就是六分仪。六分仪最为主要的功能,就是测定天体相对于地平面的高度角。六分仪的
April 2008 issue of the magazine “help me find the wrong” US navigator Six sextant training historical photos, many readers have sent letters and e-mail to ask questions about the sextant. Sextant is indeed a wonderful little thing, in order to meet the reader’s request, I author this article, a little preliminary description of the sextant. We know that there are many ways to navigate the aircraft, of which celestial navigation is one of the earliest and more reliable methods. The basic theory of celestial navigation is based on the certainty of the distant celestial bodies and the relative position of the earth. Through thousands of years of observation, people have mastered the laws governing the movement of many celestial bodies and know when and where they appear , The celestial body can become a reliable frame of reference of the aircraft navigation and positioning. The use of celestial navigation, you must try to determine the location of celestial bodies, which requires the use of a special instrument and equipment, today’s navigator (including sailing personnel) still need to know how to use it, this compact instrument is Sextant. The most important function of the sextant is to measure the height of the celestial body relative to the ground plane. Sextant