专利名称：Celestial navigator 发明人：William L. Abler
申请号：US06/239504
申请日：19810302
公开号：US04449817A潘让
公开日：拌莜面
春风喜雨
19840522
风雨无阻造句
专利内容由知识产权出版社提供
大四自我鉴定摘要：Celestial navigational instrument and method of determination of local latitude and local hour angle of Aries by a single sighting on the night sky. Greenwich hour angle of Aries and latitude are obtained by simple reference to the instrument's scales and to a watch and Nautical Almanac; sight reduction tables, plotting boards and charts are not required. The instrument compris a sky asmbly and a horizon asmbly. The sky asmbly includes a clod central axial tube on which are rotatably mounted a combined periscope/telescope tube for sighting a first star and a periscope tube for sighting a cond star, the siderial hour angular positions of both of which are t with respect to a single sky wheel and the polar distances of each periscope turret with respect to protractor scales. The horizon asmbly compris a periscope/telescope asmby mounted on the central axial tube and indexed to a horizon wheel and protractor scale to read the local hour angle of Aries and local latitude. A beam splitter, mirrors and optical lens elements are mounted to permit simultaneous obrvation of two stars and the horizon.
暗香浮爱申请人：ABLER; WILLIAM L.
擂沙圆>六孔竖笛入门教程
代理机构：Dulin, Jacques M.
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