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Position Fixing in Aircraft During Long Distance Flights Over the Sea

Published online by Cambridge University Press:  19 August 2016

T. Y. Baker  and
L. N. G. Filon
T. Y. Baker
Affiliation:
Admiralty Compass Department
L. N. G. Filon
Affiliation:
late Royal Air Force, Professor of Applied Mathematics and Mechanics in the University of London
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Extract

Air navigation has so far been only by dead reckoning; with long distance flights overseas such methods are no longer adequate.—Methods of position fixing by astronomical observations.—Difficulties of taking sights in the air.— Visibility of the horizon.—Cloud horizons.—“Dip.”—The Baker Air Sextant.— Gravity controlled vertical for sight taking.

Difficulties of working out the observations in the air.—The navigation machine.—Curves of constant altitude and constant position angle.—The equations of their mercator projections.—The radii of curvature.—Error of declination treated as a correction to altitude.—Special slide rule.—Star curves.—Chronometers for air work.—Practical construction of altitude and position angle curves.—Checks upon the accuracy.

Run between sights.—Theoretical case.

Type
Research Article
Information
The Transactions of the Royal Aeronautical Society , Volume 2: Position fixing in Aircraft during long distance flights over the sea , March 1920 , pp. 3 - 25
Copyright
Copyright © Royal Aeronautical Society 1920 

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