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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Test of an adjustable pitch model propeller at four blade settings

Test of an adjustable pitch model propeller at four blade settings

Date: February 1, 1930
Creator: Lesley, E P
Description: This note describes tests of an adjustable blade metal model propeller, both in a free wind stream and in combination with a model fuselage, at four settings of the blades. The model propeller is designed for a uniform nominal pitch/diameter ratio of .7 and the blade settings used correspond to nominal pitch/diameter ratios of .5, .7, .9, and 1.1 at the .6 radius. The tests show that propellers of this type may be considerably changed in setting from the designed pitch angles and yet give excellent performance. The efficiency realized and power absorbed when blades are set at other than the designed angle, are little different than would be obtained from a propeller with uniform pitch equal to the mean pitch of the propeller under test.
Contributing Partner: UNT Libraries Government Documents Department
Test of an aerodynamically heated multiweb wing structure (MW-1) in a free jet at Mach number 2

Test of an aerodynamically heated multiweb wing structure (MW-1) in a free jet at Mach number 2

Date: July 30, 1953
Creator: Heldenfels, Richard R; Rosecrans, Richard & Griffith, George E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Test of NACA 66,2-116, a = 0.6 airfoil section fitted with pressure balanced and slotted flaps for the wing of the XP-63 airplane

Test of NACA 66,2-116, a = 0.6 airfoil section fitted with pressure balanced and slotted flaps for the wing of the XP-63 airplane

Date: May 1, 1942
Creator: Abbott, Frank T , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Test of single-stage axial-flow fan

Test of single-stage axial-flow fan

Date: January 1, 1942
Creator: Bell, E Barton
Description: A single-stage axial fan was built and tested in the shop of the propeller-research tunnel of the NACA. The fan comprised a simple 24-blade rotor having a diameter of 21 inches and a solidity of 0.86 and a set of 37 contravanes having a solidity of 1.33. The rotor was driven by a 25-horsepower motor capable of rotating at a speed of 3600 r.p.m. The fan was tested for volume, pressure, and efficiency over a range of delivery pressures and volumes for a wide range of contravane and blade-angle settings. The test results are presented in chart form in terms of nondimensional units in order that similar fans may be accurately designed with a minimum effort. The maximum efficiency (88 percent) was obtained by the fan at a blade angle of 30 degrees and a contravane angle of 70 degrees. An efficiency of 80 percent was obtained by the fan with the contravanes removed.
Contributing Partner: UNT Libraries Government Documents Department
Test of six types of Bakelite-bonded wire strain gages

Test of six types of Bakelite-bonded wire strain gages

Date: July 1, 1948
Creator: Campbell, William R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Test of specimen of wood of longerons of the S.E.5 airplane after seven years' service

Test of specimen of wood of longerons of the S.E.5 airplane after seven years' service

Date: August 1, 1922
Creator: unknown
Description: A transverse test was made of the wood sample using a 5,000 pound Olsen testing machine, the deflection under load being measured by means of a Wissler dial. The results of the transverse test are given and the stress-strain curve is attached.
Contributing Partner: UNT Libraries Government Documents Department
Test Plan for Reactions Between Spent Fuel and J-13 Well Water Under Unsaturated Conditions

Test Plan for Reactions Between Spent Fuel and J-13 Well Water Under Unsaturated Conditions

Date: January 1993
Creator: Finn, P. A.; Wronkiewicz, David J.; Hoh, J. C.; Emery, J. W.; Hafenrichter, L. D. & Bates, J. K.
Description: Two complentary test plans are presented, one to examine the reaction of spent fuel and J-13 well water under unsaturated conditions and the second to examine the reaction of unirradiated uranium dioxide pellets and J-13 well water under unsaturated conditions. The former test plan examines the importance of the water content, the oxygen content as affected by radiolysis, the fuel burnup, fuel surface area, and temperature. The latter test plant examines the effect of the non-presence of Teflon in the test vessel.
Contributing Partner: UNT Libraries Government Documents Department
Test Report on Measurements on a Series of Tapered Wings of Small Aspect Ratio (Trapezoidal Wing with Fuselage)

Test Report on Measurements on a Series of Tapered Wings of Small Aspect Ratio (Trapezoidal Wing with Fuselage)

Date: July 1, 1947
Creator: Lange & Wacke
Description: This is the second of a series of six reports dealing with three- and six-component measurements on the tapering series at small aspect ratio. The present report concerns the trapezoidal wing with fuselage.
Contributing Partner: UNT Libraries Government Documents Department
Test Report on Three- and Six-Component Measurements on a Series of Tapered Wings of Small Aspect Ratio

Test Report on Three- and Six-Component Measurements on a Series of Tapered Wings of Small Aspect Ratio

Date: May 1, 1948
Creator: Lange & Wacke
Description: The investigations of the reports to 4 on wings of small aspect ratio are continued. The present report deals with the results of the three- and six-component measurements and the flow pictures of the triangular wing series with the aspect ratio Lambda = 3 to Lambda = 1.
Contributing Partner: UNT Libraries Government Documents Department
Test Report on Three-and Six-Component Measurements on a Series of Tapered Wings of Small Aspect Ratio (Partial Report: Elliptic Wing)

Test Report on Three-and Six-Component Measurements on a Series of Tapered Wings of Small Aspect Ratio (Partial Report: Elliptic Wing)

Date: June 1, 1947
Creator: Lange & Wacke
Description: The report UM No. 1023/1 which presented the results of measurements for a series of trapezoidal wings was the beginning of a series on wings with aspect ratio 1 to 3 and various contours. In report No. 1023/1 the aspect ratio (Lambda = 4/3) remained the same; the tapering was modified. The present report gives the results of the series of elliptic wings. Here the aspect ratio varies from 1 to 2 with the sweepback. The contour is formed by elliptic arcs. The influence of sweepback and contour upon the neutral point is shown.
Contributing Partner: UNT Libraries Government Documents Department
Test Report on Three- and Six-Component Measurements on a Series of Tapered Wings of Small Aspect Ratio (Partial Report: Trapezoidal Wing)

Test Report on Three- and Six-Component Measurements on a Series of Tapered Wings of Small Aspect Ratio (Partial Report: Trapezoidal Wing)

Date: May 1, 1949
Creator: Lange & Wacke
Description: The present report, which forms the first of six articles on experiments with airfoils of aspect ratio from 1 to 3 and various planforms, deals with the three- and six-component measurements made on the trapezoidal wing series in the 2.15 x 3-meter wind tunnel of the DVL at the request of the Henschel Aircraft Company.
Contributing Partner: UNT Libraries Government Documents Department
Test Results for 36-V Li/FeS Battery

Test Results for 36-V Li/FeS Battery

Date: January 1990
Creator: Chilenskas, A. A.; Malecha, R. F.; DeLuca, W. H.; Tummillo, A. F. & Hogrefe, R. L.
Description: This report describes a collaborative effort between Argonne National Laboratory (ANL) and the Westinghouse Naval Systems Division from 1986 to 1989. This effort resulted in the design, fabrication, and testing of two 36-V lithium-alloy/iron monosulfide (Li/FeS) batteries. The test results provided validation of a conceptual design for a full-scale electric van battery, as well as design and performance data for 12-V Li/FeS modules and fractional-scale battery components.
Contributing Partner: UNT Libraries Government Documents Department
Test-stand investigation of a rectangular ram-jet engine

Test-stand investigation of a rectangular ram-jet engine

Date: May 7, 1947
Creator: Black, Dugald O & Messing, Wesley E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Test-stand investigation of cooling characteristics and factors affecting temperature distribution of a double-row aircraft engine

Test-stand investigation of cooling characteristics and factors affecting temperature distribution of a double-row aircraft engine

Date: March 1, 1946
Creator: Jones, Robert J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Test Unit Power Supply

Test Unit Power Supply

Date: 1944
Creator: Sands, M.
Description: Technical drawing of electronic circuits and power supplies for nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Testing a windmill airplane ("autogiro")

Testing a windmill airplane ("autogiro")

Date: January 1, 1927
Creator: Seiferth, R
Description: In order to clear up the matter ( In the Spanish report it was stated that the reference surface for the calculation of the coefficients c(sub a) and c(sub w) was the area of all four wings, instead of a single wing), the model of a windwill airplane was tested in the Gottingen wind tunnel.
Contributing Partner: UNT Libraries Government Documents Department
Testing airplane fabrics

Testing airplane fabrics

Date: April 1, 1924
Creator: Proll, A
Description: The following considerations determine the strength of airplane fabrics: 1. maximum air forces acting on the surfaces (including local stresses); 2. tensions produced in the fabrics, in the directions of both warp and filling; 3. factor of safety required. The question of the permissible depression of the fabric as affecting the aerodynamic requirements in regard to the maintenance of shape of the section, the tenacity and extensibility of the layer of dope, its strength and its permeability to water is almost as important.
Contributing Partner: UNT Libraries Government Documents Department
Testing airplanes in flight: determining position of resultant of action of air and longitudinal stability of an airplane at different angles of attack

Testing airplanes in flight: determining position of resultant of action of air and longitudinal stability of an airplane at different angles of attack

Date: April 1, 1922
Creator: Senouque, A
Description: Measurements made during flight with the triple recording device which gives the horizontal and vertical speeds of an airplane and the angle it makes with the horizon, render it possible to calculate its lift, its drag, and R the resultant of the action of the air both in magnitude and direction, but with these data alone, it is impossible to determine the position of this resultant in the plane of symmetry of the airplane. We will also see how we may determine the position of R during flight and then calculate the variations in the stability of an airplane.
Contributing Partner: UNT Libraries Government Documents Department
Testing and Development of Electric Vehicle Batteries for EPRI Electric Transportation Program : Technical Report for January 1985 - April 1986

Testing and Development of Electric Vehicle Batteries for EPRI Electric Transportation Program : Technical Report for January 1985 - April 1986

Date: January 1988
Creator: Argonne National Laboratory
Description: The battery is a key element in the acceptance of electric vehicles, and R and D efforts are being undertaken to improve battery performance and lifetime. In this electric-vehicle battery program, controlled laboratory tests were conducted to evaluate the effects of selected factors on the performance and life of the EV-2300 lead-acid battery manufactured by Johnson Controls, Inc. These factors included simulated driving profiles with different levels of peak power demands for vehicle acceleration, long rest times after charge or discharge, and different methods of recharging. The performance and cycle life of a 12-module full-scale battery pack and its support system were also evaluated. This report summarizes the work carried out on this program from January 1985 through April 1986. This work involved tests of the battery pack and support system, statistical analysis of capacity and power data from earlier tests of six-cell modules, and post-test analysis of selected modules and cells.
Contributing Partner: UNT Libraries Government Documents Department
Testing balloon gas

Testing balloon gas

Date: January 1, 1920
Creator: Edwards, Junius David
Description: In the generation, storage, and use of hydrogen for balloon purposes it is necessary to be able to determine, first, its lifting power, and, secondly, its purity. The lifting power may be determined directly from the specific gravity. Contamination by other gases may be determined by analysis for oxygen, carbon dioxide, etc., by the usual methods of gas analysis. The determination of oxygen is important, since the presence of oxygen in amounts beyond certain limits will make the compressing, handling, and use of the gas hazardous. If the specific gravity of the gas is known, however, it may not be necessary to analyze the gas for oxygen and other gases, because the specific gravity in itself is a delicate criterion of the purity of hydrogen. Report describes a simple, portable apparatus for testing hydrogen, with special reference to its use in balloons.
Contributing Partner: UNT Libraries Government Documents Department
The testing of airplane fabrics

The testing of airplane fabrics

Date: November 1, 1932
Creator: Schraivogel, Karl
Description: This report considers the determining factors in the choice of airplane fabrics, describes the customary methods of testing and reports some of the experimental results. To sum up briefly the results obtained with the different fabrics, it may be said that increasing the strength of covering fabrics by using coarser yarns ordinarily offers no difficulty, because the weight increment from doping is relatively smaller.
Contributing Partner: UNT Libraries Government Documents Department
The testing of aviation engines

The testing of aviation engines

Date: December 1, 1924
Creator: Dubois, R N
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The testing of balloon fabrics

The testing of balloon fabrics

Date: January 1, 1920
Creator: Edwards, Junius David & Moore, Irwin L
Description: Report describes methods and materials used in waterproofing and fireproofing airplane fabrics using dopes. The determination of the probable life of a balloon fabric in service by experimental means is of great value in choosing the most suitable fabrics for a given purpose and in pointing the way to improvements in compounding and construction. The usefulness of exposure to the weather for this purpose has been amply demonstrated. Various attempts have been made to reproduce by artificial means the conditions promoting deterioration in service, but without marked success. Exposure to the weather remains the most satisfactory method for this purpose, and a consideration of the characteristics of such tests is therefore important. This report presents the results of a typical series of exposure tests made in 1917.
Contributing Partner: UNT Libraries Government Documents Department
Testing of Containment Capabilities of Reinforced Concrete-Shielded Enclosures

Testing of Containment Capabilities of Reinforced Concrete-Shielded Enclosures

Date: March 1963
Creator: Fistedis, S. H.; Heineman, A. H. & Janicke, M. J.
Description: None
Contributing Partner: UNT Libraries Government Documents Department