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Restraint Provided a Flat Rectangular Plate by a Sturdy Stiffener Along an Edge of the Plate, Special Report

Description: A sturdy stiffener is defined as a stiffener of such proportions that it does not suffer cross-sectional distortion when moments are applied to some part of the cross section. When such a stiffener is attached to one edge of a plate, it will resist rotation of that edge of the plate by means of its torsional properties. A formula is given for the restraint coefficient provided the plate by such a stiffener. This coefficient is required for the calculation of the critical compressive stress of the plate.
Date: May 1, 1941
Creator: Lundquist, Eugene E. & Stowell, Elbridge Z.
Item Type: Report
Partner: UNT Libraries Government Documents Department

A restricted list of aircraft materials research projects

Description: This report contains a selected list of Government sponsored research projects on related aircraft materials in effect during the calendar year 1947. Information is contained on titles, description, sponsoring and conducting agencies.
Date: May 4, 1948
Item Type: Report
Partner: UNT Libraries Government Documents Department

Results obtained during accelerated transonic tests of the Bell XS-1 airplane in flights to a Mach number of 0.92

Description: Results are presented of tests up to a Mach number of 0.92 at altitudes around 30,000 feet. The data obtained show that the airplane can be flown to this Mach number above 30,000 feet. Longitudinal trim changes have been experienced but the forces involved have been small. The elevator effectiveness decreased about one-half with increase of Mach number from 0.70 to 0.87. Buffeting has been experienced in level flight but it has been mild and the associated tail loads have been small. No aileron buzz or other flutter phenomena have been noted.
Date: April 19, 1948
Creator: Drake, Hubert M; Mclaughlin, Milton D & Goodman, Harold R
Item Type: Report
Partner: UNT Libraries Government Documents Department

Results Obtained from Third Flight of Northrop X-4 Airplane (A.F. No. 46-676)

Description: NACA instrumentation has been installed in the Northrop X-4 airplane to obtain stability and control data during the Northrop conducted acceptance tests. The results o. the third flight of the X- ll. number 1 airplane are presented in this paper. The results of this flight showed that the directional stability as measured in steadily increasing sideslips was positive and high and that the lateral stability was positive.
Date: September 9, 1949
Creator: Williams, Walter C
Item Type: Report
Partner: UNT Libraries Government Documents Department

Results of a Biological Survey of Mount Shasta California

Description: From introduction: "Biological survey of northern California from the Madeline Plains to the Pacific Ocean and from the Oregon boundary to Lassen Butte and parts of the Sierra, with Mount Shasta occupying a nearly central position."
Date: October 28, 1899
Creator: Merriam, C. Hart
Item Type: Report
Partner: UNT Libraries Government Documents Department

Results of Assays of the New Albany Oil-Shale

Description: Report issued by the U.S. Bureau of Mines on a survey of the New Albany oil-shale deposits in Indiana. The experimental procedures for surveying and sampling these shale deposits are presented in detail. This report includes tables, and graphs.
Date: June 1923
Creator: Reeves, John R.
Item Type: Report
Partner: UNT Libraries Government Documents Department