Resource Type

673 Matching Results

Results open in a new window/tab.

Accelerations and bottom pressures measured on a B-24D airplane in a ditching test (open access)

Accelerations and bottom pressures measured on a B-24D airplane in a ditching test

From Introduction: "This report presents only that portion of the data from the first ditching which was to be used roughly establish the accelerations experienced by the pilot and the amount of water pressure to which the fuselage structure was subjected during the ditching."
Date: November 1944
Creator: Steiner, Margaret F.
System: The UNT Digital Library
Accelerations Measured at Center of Gravity and Along Span of the Wing of a B-24D Airplane in Landing Impacts (open access)

Accelerations Measured at Center of Gravity and Along Span of the Wing of a B-24D Airplane in Landing Impacts

Report presenting measurements of a Consolidated B-24D airplane of accelerations at various points on the wing during landing impacts. landings were made with the wheels initially stationary but free to rotate, with the brakes set before contact, and with the main wheels rotating prior to contact.
Date: August 1944
Creator: Westfall, John R.
System: The UNT Digital Library
Aerodynamic Characteristics of the NACA 747A315 and 747A415 Airfoils From Tests in the NACA Two-Dimensional Low-Turbulence Pressure Tunnel (open access)

Aerodynamic Characteristics of the NACA 747A315 and 747A415 Airfoils From Tests in the NACA Two-Dimensional Low-Turbulence Pressure Tunnel

Report presenting two low-drag airfoils, the NACA 747A315 and the NACA 747A415, which are designed to have reduced pitching moments about the quarter-chord point and moderately high values of the design lift coefficient and are tested in the tow-dimensional low-turbulence pressure tunnel.
Date: September 1944
Creator: von Doenhoff, Albert E. & Stivers, Louis S., Jr.
System: The UNT Digital Library
Aerodynamic Tests of a Full-Scale TBF-1 Aileron Installation in the Langley 16-Foot High-Speed Tunnel (open access)

Aerodynamic Tests of a Full-Scale TBF-1 Aileron Installation in the Langley 16-Foot High-Speed Tunnel

"This report describes tests in the Langley 16-foot high-speed tunnel to determine whether these failures could be attributed to changes in the aerodynamic characteristics of the ailerons at high speeds" (p. 1).
Date: December 1944
Creator: Becker, John V. & Korycinski, Peter F.
System: The UNT Digital Library
Aerodynamic Tests of an A-M-65-AZON 1000-Pound Radio-Controlled Bomb in the LMAL 16-Foot High-Speed Tunnel (open access)

Aerodynamic Tests of an A-M-65-AZON 1000-Pound Radio-Controlled Bomb in the LMAL 16-Foot High-Speed Tunnel

Report presenting tests made in the LMAL 16-foot high-speed tunnel to determine the aerodynamic characteristics of a 1000-pound AN-M-65-AZON radio-controlled bomb at a Mach number range of 0.2 to 0.6. Over the Mach number range, the hinge-moment coefficients, yawing-moment coefficients, and lateral-force coefficients exhibited no important changes with increasing speed.
Date: June 1944
Creator: Pearson, E. O., Jr.
System: The UNT Digital Library
Aerodynamic Tests of an NACA 66(215)-116, a=0.6 Airfoil With a 0.25c Slotted Flap for the Fleetwings XA-39 Airplane (open access)

Aerodynamic Tests of an NACA 66(215)-116, a=0.6 Airfoil With a 0.25c Slotted Flap for the Fleetwings XA-39 Airplane

Report presenting testing in the two-dimensional low-turbulence tunnels on a 24-inch-chord model of the NACA 66(215)-116 a = 0.6 airfoil with a 0.25-chord slotted flap. The optimum flap pivot positions were found for three different conditions. The conditions were determined from a consideration of the landing, take-off, and strafing requirements of the airplane.
Date: November 1944
Creator: Cahill, Jones F.
System: The UNT Digital Library
Air and Gas Injection in the Oil Fields of Illinois (open access)

Air and Gas Injection in the Oil Fields of Illinois

Report issued by the U.S. Bureau of Mines on the gas injection methods in the oil fields of Illinois. The results and properties of the injections are presented. This report includes tables, graphs, illustrations, and maps.
Date: November 1944
Creator: Keithly, C. M. & Jennings, Thomas
System: The UNT Digital Library
Air-consumption parameters for automatic mixture control of aircraft engines (open access)

Air-consumption parameters for automatic mixture control of aircraft engines

From Introduction: "The purpose of this analysis was to investigate the use of function of intake-manifold temperature and pressure, exhaust back pressure, and engine speed in place of a ventri as a means of measuring engine air consumption and to determine if this function is suitable for automatic mixture control."
Date: September 1944
Creator: Shames, Sidney J.
System: The UNT Digital Library
Air-Consumption Parameters for Automatic Mixture Control of Aircraft Engines (open access)

Air-Consumption Parameters for Automatic Mixture Control of Aircraft Engines

From Introduction: "The purpose of this analysis was to investigate the use of a function of intake-manifold pressure, exhaust back pressure, intake manifold temperature, and engine speed in place of a venturi as a means of measuring engine air consumption and to determine if this function is suitable for automatic mixture control."
Date: September 1, 1944
Creator: Shames, Sidney J.
System: The UNT Digital Library
Airfoil-Contour Modifications Based on (Epsilon)-Curve Method of Calculating Pressure Distribution (open access)

Airfoil-Contour Modifications Based on (Epsilon)-Curve Method of Calculating Pressure Distribution

From Introduction: "Certain alternations of a qualitative nature may be performed in spite of the fact that a pressure change cannot be prescribed. It is the purpose of this paper to indicate a method by which qualitative alternation may be performed. It will be noted that the present method of contour modification will serve the intended purpose of the inverse method."
Date: July 1944
Creator: Theodorsen, Theodore
System: The UNT Digital Library
Airfoil Section Data From Tests of 10 Practical-Construction Sections of Helicopter Rotor Blades Submitted by the Sikorsky Aircraft Division, United Aircraft Corporation (open access)

Airfoil Section Data From Tests of 10 Practical-Construction Sections of Helicopter Rotor Blades Submitted by the Sikorsky Aircraft Division, United Aircraft Corporation

Report presenting 10 practical-construction models of sections of helicopter rotor blades tested in the NACA two-dimensional low-turbulence pressure tunnel at atmospheric pressure. Lift, drag, and pitching-moment characteristics of blades representing the present method of construction of the YR-4A helicopter were determined.
Date: September 1944
Creator: Tetervin, Neal
System: The UNT Digital Library
Ames Project, Chemical Research - Analytical Chemistry, Report for Period of February 1 to March 10, 1944 (open access)

Ames Project, Chemical Research - Analytical Chemistry, Report for Period of February 1 to March 10, 1944

Technical report covering (1) analysis of uranium bromide and chloride samples, (2) the ferric-nitrate method of analyzing uranium fluorides for fluorine, (3) spectrographic determination of boron, cadmium and manganese in magnesium metal, (4) service analyses. contributions to other problems, (5) attempted preparation of uranous oxyfluoride, and (6) corrections in previous reports.
Date: April 13, 1944
Creator: Spedding, F. H. (Frank Harold), 1902- & Wilholm, H. A.
System: The UNT Digital Library
Ames Project, Chemical Research - General Chemistry, Report for the Period of April 10 to May 10, 1944 (open access)

Ames Project, Chemical Research - General Chemistry, Report for the Period of April 10 to May 10, 1944

Technical report. Areas covered are properties of uranium halides, properties of uranium nitrides, and hydride formation at high pressure.
Date: June 17, 1944
Creator: Spedding, F. H. (Frank Harold), 1902- & Wilhelm, H. A.
System: The UNT Digital Library
Ames Project, Chemical Research - General, for the Period September 10, 1944 to October 10, 1944 (open access)

Ames Project, Chemical Research - General, for the Period September 10, 1944 to October 10, 1944

Technical report with short articles on (1) Uranium-oxygen system compositions UO2 to U3O3; (2) Thorium hydride; (3) Production of cerium; and (4) Production of thorium.
Date: November 9, 1944
Creator: pedding, F. H. (Frank Harold), 1902- & Wilhelm, H. A.
System: The UNT Digital Library
Analyses of Kentucky Coals (open access)

Analyses of Kentucky Coals

Report issued by the Bureau of Mines discussing analyses of the Eastern and Western coal fields in Kentucky. The two coal fields are described in detail. This report includes tables, and illustrations.
Date: 1944
Creator: McFarlan, Arthur C.
System: The UNT Digital Library
Analyses of Pennsylvania Anthracitic Coals (open access)

Analyses of Pennsylvania Anthracitic Coals

Report issued by the Bureau of Mines discussing the anthracite coal fields of Pennsylvania. History, geology, and mining methods of the anthracite fields are presented. This report includes tables, illustrations, and maps.
Date: 1944
Creator: Ashley, George H.; Toenges, Albert L.; McElroy, G. E.; Siclen, M. Van; Buch, J. W.; Snyder, N. H. et al.
System: The UNT Digital Library
Analysis and Correlation of Data Obtained by Six Laboratories on Fuel-Vapor Loss From Fuel Tanks During Simulated Flight (open access)

Analysis and Correlation of Data Obtained by Six Laboratories on Fuel-Vapor Loss From Fuel Tanks During Simulated Flight

Report presenting an analysis of data on fuel-vapor loss from fuel tanks during simulated flight obtained by six laboratories to show the effects of individual variables such as altitude, initial fuel temperature, rate of climb, booster-pump agitation, fuel depth, fuel-surface area, types of fuel, and vent-line pressure drop on fuel-vapor loss.
Date: December 1944
Creator: Stone, Charles S.; Baker, Sol & Englert, Gerald W.
System: The UNT Digital Library
Analysis of a thermal ice-prevention system for wing leading-edge landing-light installations (open access)

Analysis of a thermal ice-prevention system for wing leading-edge landing-light installations

From Introduction: "A typical ice formation on a wing leading-edge-type light installation is shown in figure 1. Although the primary purpose of this analytic investigation was to determine the practicability of providing a landing-light thermal ice-prevention system which could be incorporated with the wing leading-edge thermal ice-prevention system of the B-17 F airplane, the analysis has been developed in a general form for future application to similar deigns. "
Date: January 1944
Creator: Hillendahl, Wesley H.
System: The UNT Digital Library
Analysis of Available Data on Control Surfaces Having Plain-Overhang and Frise Balances (open access)

Analysis of Available Data on Control Surfaces Having Plain-Overhang and Frise Balances

From Introduction: "The present paper deals with control surfaces having plain-overhang and Frise balances."
Date: May 1944
Creator: Purser, Paul E. & Toll, Thomas A.
System: The UNT Digital Library
Analysis of available data on the effectiveness of ailerons without exposed overhang balance (open access)

Analysis of available data on the effectiveness of ailerons without exposed overhang balance

From Introduction: "As a part of the general lateral-control investigation by the NACA, the large amount of two- and three-dimensional data on the rolling effectiveness of ailerons without exposed overhang balance is collected and analyzed in the present paper."
Date: May 1944
Creator: Crandall, Stewart M. & Swanson, Robert S.
System: The UNT Digital Library
Analysis of Circular Shell-Supported Frames (open access)

Analysis of Circular Shell-Supported Frames

From Summary: "This paper deals with the single problem if circular shell-supported frames subjected to concentrated loadings. A mathematical attack is developed and presented in the form of nondimensional-coefficient curves."
Date: May 1944
Creator: Wignot, J. E.; Combs, Henry & Ensrud, A. F.
System: The UNT Digital Library
Analysis of Columbia River mud (open access)

Analysis of Columbia River mud

This report is a copy of a letter sent on May 23, 1944, concerning the analytical evaluation of Columbia River water by Clinton Laboratories.
Date: May 23, 1944
Creator: Hoff, M. R.
System: The UNT Digital Library
Analysis of Experimental Investigations of the Planing Process of the Surface of Water (open access)

Analysis of Experimental Investigations of the Planing Process of the Surface of Water

Pressure distribution and spray measurements were carried out on rectangular flat and V-bottom planing surfaces. Lift, resistance, and center of pressure data are analyzed and it is shown how these values may be computed for the pure planing procees of a flat or V-bottom suface of arbitrary beam, load and speed, the method being illustrated with the aid of an example.
Date: March 1944
Creator: Sottorf, W.
System: The UNT Digital Library
Analysis of factors affecting net lift increment attainable with trailing-edge split flaps on tailless airplanes (open access)

Analysis of factors affecting net lift increment attainable with trailing-edge split flaps on tailless airplanes

From Introduction: "The lift increments of different flap arrangements were determined by the method of reference 1 with a simple chord correction factor being applied. This procedure is somewhat similar in basic principles to the method of reference 2. The accuracy of the present method was determined by calculating by means of this method the lift and moment increments of flaps on 10 different finite wing-flap combinations for which wind-tunnel data were available."
Date: September 1944
Creator: Maggin, Bernard
System: The UNT Digital Library