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Control information in visual flightThe purpose of the inquiry is to determine how precisely a pilot can estimate the movements of his vehicle, and thus exercise control, during an unaided visual approach. The method is to relate changes in the forward view, due to movements along and across the approach path, to human visual thresholds and errors. The scope is restricted to effects of inclination, expansion, size, and rotation in runway features during approaches at small angles of elevation. Quantitative relations are given which provide a basis for ranking the several information mechanisms. Alignment by inclination of a ground line is found to be an accurate lateral mechanism, probably superior to the expansion mechanism. Vertical control mechanisms are complex, of questionable accuracy, and difficult to rank. The results throw some doubt on the usefulness of a runway symbol as a source of displayed information.
Document ID
19730001398
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Naish, J. M.
(Douglas Aircraft Co., Inc. Santa Monica, CA, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: NASA, Washington 7th Ann. Conf. on Manual Control
Subject Category
Biotechnology
Accession Number
73N10125
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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