Aeronautic Instruments. Section VI : Aerial Navigation and Navigating Instruments (1923)
NASA Technical Reports Server (NTRS) · leaf 39
ONAUTICS. Nomogram slide rule ™—A slide rule for solving the formula on which the altitude, azimuth, and hour-angle diagram is based has been devised by Wimperis and Horsley. The name of the slide rule is explained by the fact thai the British use this same diagram under the name of the uSpherical… … Fig. 24.— Line-of-position computer. taneously. Graduated circles which can be turned and rotated with respect to cadi other represent the equator, the meridians of the observer and the celestial body, and the urre;it circle passing through the positions of the observer and the celestial body.…
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