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Bureau of Mines Multiple-Diaphragm Recording Subsurface-Pressure Gage

Description: Report issued by the U.S. Bureau of Mines on the measuring of temperature and pressure in oil and gas wells. Descriptions of the instrumentation developed and used for these measurements are presented. This report includes tables, graphs, and illustrations.
Date: November 1935
Creator: Berwald, W. B.; Buss, H. A. & Reistle, C. E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of the N.A.C.A. Slot-Lip Aileron

Description: "An investigation of the undesirable delayed action, or lag, of the spoiler-type lateral control device led to the development of the NACA slot-lip aileron. The tests were made in the 7- by 10-foot wind tunnel with a 4- by 8-foot wing hinged at the tunnel jet boundary and restrained in roll by elastic cords. Time histories were taken of the motion of the control device under test and of the resulting wing motion" (p. 1).
Date: November 1935
Creator: Weick, Fred E. & Shortal, Joseph A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tank tests of a model of a flying-boat hull having a longitudinally concave planing bottom

Description: "The NACA model 11-B, which has a longitudinally concave planing bottom forward of the step, was tested over a wide range of loading. The results of the tests are presented as curves of resistance and trimming moment plotted against speed for various trim angles and as curves of resistance coefficient at best trim angle, and trimming-moment coefficient. The characteristics of the form at the optimum trim are compared with those of NACA model 11-C which has the same form with the exception of a … more
Date: November 1935
Creator: Parkinson, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparative Tests of Pitot-Static Tubes

Description: "Comparative tests were made on seven conventional Pitot-static tubes to determine their static, dynamic, and resultant errors. The effect of varying the dynamic opening, static opening, wall thickness, and inner-tube diameter was investigated. Pressure-distribution measurements showing stem and tip effects were also made. A tentative design for a standard Pitot-static tube for use in measuring air velocity is submitted" (p. 1).
Date: November 1935
Creator: Merriam, Kenneth G. & Spaulding, Ellis R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Letter from Pedro J. Gonzalez to Robert H. Scott]

Description: Letter from Pedro J. Gonzalez to Robert H. Scott. A wide column of paragraphed text is printed below a date, name, and location. Beneath the paragraphed text is a signature, while to its left is a line of handwritten text extending along the paper's left edge.
Date: November 5, 1935
Creator: Parlee, Lorena, 1945-2006 & Gonzalez, Pedro J.
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

Reduction of Lift of a Wing Due to Its Drag

Description: This analysis computes for a predetermined airfoil and given Reynolds Number the course of the "displacement thickness," i.e., the course of the layer by which the streamlines of the potential flow are pushed away from the wing through the frictional layer. The result is, to a certain extent, a new wing contour.
Date: November 1935
Creator: Stüper, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Glider Development in Germany: A Technical Survey of Progress in Design in Germany Since 1922

Description: This report is a recounting of glider development beginning with the "Vampyr" on up to the present day. The primary purpose is to determine what the fundamental features of the glider are and what the course of its development has been during the thirteen years of activity in motorless flight.
Date: November 1935
Creator: Shenstone, B. S. & Scott-Hall, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Weldability of High-Tensile Steels From Experience in Airplane Construction, With Special Reference to Welding Crack Susceptibility

Description: "The concept of welding crack tendency is explained and illustrated with practical examples. All pertinent causes are enumerated, and experimental measures are given through which the secondary effects can be removed and the principal causes analyzed: 1) welding stresses; and 2) material defects. The variations in length and stresses incident to welding a small bar as free weld, with restrained elongation and restrained elongation and contraction, are explored in three fundamental experiments" … more
Date: November 1935
Creator: Müller, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tests of a Wing-Nacelle-Propeller Combination at Several Pitch Settings Up to 42 Degrees

Description: This report presents the results of tests of a 4-foot model of Navy propeller No. 4412 in conjunction with an NACA cowled nacelle mounted ahead of a thick wing in the 20-foot propeller-research tunnel. A range of propeller pitches from 17 degrees to 42 degrees at 0.75r was covered, and for this propeller the efficiency reached a maximum at a pitch setting of 27 degrees; at high pitches the efficiencies were slightly lower. The corrected propulsive efficiency is shown to be independent of the an… more
Date: November 12, 1935
Creator: Windler, Ray
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Air flow around finned cylinders

Description: Report presents the results of a study made to determine the air-flow characteristics around finned cylinders. Air-flow distribution is given for a smooth cylinder, for a finned cylinder having several fin spacings and fin widths, and for a cylinder with several types of baffle with various entrance and exit shapes. The results of these tests show: that flow characteristics around a cylinder are not so critical to changes in fin width as they are to fin spacing; that the entrance of the baffle … more
Date: November 7, 1935
Creator: Brevoort, M. J. & Rollin, Vern G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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