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Lightning Discharges to Aircraft and Associated Meteorological Conditions

Description: A summary is given of information on atmospheric electrical discharges to aircraft and associated meteorological conditions. Information is given that is designed to give a fairly comprehensive view of the underlying principles of meteorology and atmospheric electricity. Of special interest to pilots are lists of procedures of flight conduct and aircraft maintenance recommended foe avoiding or minimizing the hazards of disruptive electrical discharges and other severe conditions near thundersto… more
Date: May 1946
Creator: Harrison, L. P.
Item Type: Refine your search to only Report
open access

Stress Analysis of Columns and Beam Columns by the Photoelastic Method

Description: "Principles of similarity and other factors in the design of models for photoelastic testing are discussed. Some approximate theoretical equations, useful in the analysis of results obtained from photoelastic tests are derived. Examples of the use of photoelastic techniques and the analysis of results as applied to uniform and tapered beam columns, circular rings, and statically indeterminate frames, are given. It is concluded that this method is an effective tool for the analysis of structures… more
Date: March 1946
Creator: Ruffner, B. F.
Item Type: Refine your search to only Report
open access

The Column Strength of Aluminum Alloy 75S-T Extruded Shapes

Description: "Because the tensile strength and tensile yield strength of alloy 75S-T are appreciably higher than those of the materials used in the tests leading to the use of the straight-line column curve, it appeared advisable to establish the curve of column strength by test rather than by extrapolation of relations determined empirically in the earlier tests. The object of this investigation was to determine the curve of column strength for extruded aluminum alloy 75S-T. In addition to three extruded s… more
Date: January 1946
Creator: Holt, Marshall & Leary, J. R.
Item Type: Refine your search to only Report
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