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Partner
Collection
Technical Report Archive and Image Library
359
National Advisory Committee for Aeronautics Collection
279
TRAIL Microcard Collection
13
Office of Scientific & Technical Information Technical Reports
7
Texas State Publications
7
Harris and Eliza Kempner
3
Rescuing Texas History, 2019
3
Abilene Library Consortium
2
National WASP WWII Museum
2
Boy and Girl Scout Annual Reports
1
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NACA Wartime Reports
176
NACA Advanced Restricted Reports
92
NACA Technical Notes
40
United States Geological Survey Reports
39
NACA Technical Memorandums
38
U.S. Geological Survey bulletin
37
NACA Advanced Confidential Reports
32
NACA Memorandum Reports
31
Strategic minerals investigations
31
United States Bureau of Mines Reports
25
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Results:
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[Report on Operations by Fred Harmon]
Report on operations given by Fred Harmon of the Harmon Flying School at Ballinger, Texas. The report states that there are 210 students per class, 110 mechanics for 94 airplanes with 45 women who start at $65 per month. Women took night school course, 2 hours per night, 4 nights a week, while paid $1 per night, for 30 days. The women mechanics proved very steady, very capable, and efficient.
Date:
December 16, 1942
Creator:
Harmon, Fred
System:
The Portal to Texas History
Poisoning and Production in a Power Plant
The yield of 49, the efficiency of production of 49, and poisoning in a power plant are discussed. Only the crudest of estimates of the poisoning are possible: these indicated that production will probably not be hampered by poisoning. In this case the yield of 49 could be as high as 3 kg/ton but only about 2 kg/ton is compatible with a fairly high efficiency. In the case that production is stopped by poisoning, smaller yields, proportional to the tolerable loss in k, are obtained. In this case the yield will be improved by a factor of 2 or 3 if only the most poisoned parts are extracted and replaced by new uranium.
Date:
December 15, 1942
Creator:
Ashkin, J.; Christy, Robert F., 1916-2012 & Feld, Bernard T. (Bernard Taub), 1919-1993
System:
The UNT Digital Library
[Study of Factors Which Influence the Rate of Reaction Between UO3 CCl4. Progress Report]
None
Date:
December 15, 1942
Creator:
Kraus, C. A.
System:
The UNT Digital Library
Radiation Problems of the Chemical Plant
"Absorption measurements have been made in a large body of water to evaluate the contribution to the radiation intensity produced by the degradation of radiation without absorption. Radiation intensities three times those expected from a simple exponential absorption were found. Scattering from the air of gamma radiation has been measured and has been found to agree satisfactorily with theoretical predictions. The penetration of radiation through curved pipes in shielding has been measured and been found to be a flat topped function. A 2" pipe bent in the arc of a circle of 7' chord and a 10' radius gives a reduction intensity over the intensity in air at the same distance of 2.5X10⁴."
Date:
December 12, 1942
Creator:
Borst, Lyle B. & Wollan, Ernest Omar
System:
The UNT Digital Library
Effect of Temperature on the Surface of Cast Uranium Metal
Technical report. Photomicrographs showing the effect of heating polished uranium surface at 600, 700, 850, and 1000 degrees C, and sandblasted and cut surface at 1000 degrees C are included.
Date:
December 3, 1942
Creator:
Johns, I. B; Newton, A. S. & Gladrow, E. M.
System:
The UNT Digital Library
Aerodynamics of the Fuselage
"The present report deals with a number of problems, particularly with the interaction of the fuselage with the wing and tail, on the basis of simple calculating method's derived from greatly idealized concepts. For the fuselage alone it affords, in variance with potential theory, a certain frictional lift in yawed flow, which, similar to the lift of a wing of small aspect ratio, is no longer linearly related to the angle of attack. Nevertheless there exists for this frictional lift something like a neutral stability point the position of which on oblong fuselages appears to be associated with the lift increase of the fuselage in proximity to the zero lift, according to the present experiments" (p. 1).
Date:
December 1942
Creator:
Multhopp, H.
System:
The UNT Digital Library
An analysis of the effect of core structure and performance on volume and shape of cross-flow tubular intercoolers
From Introduction: "The purpose of this paper is to show, in a similar manner, the effect of change in the core structure of the tubular intercooler on the over-all dimensions when the operating conditions are fixed."
Date:
December 1942
Creator:
Reuter, J. George & Valerino, Michael F.
System:
The UNT Digital Library
Annual Report of the Explosives Division, Fiscal Year 1942
Report issued by the U.S. Bureau of Mines on the annual report of work conducted by the Explosives Division during the fiscal year of 1942. Descriptions of testing projects and operations are presented. This report includes tables, graphs, illustrations, and photographs.
Date:
December 1942
Creator:
Huff, Wilbert James
System:
The UNT Digital Library
Characteristics of beveled-trailing-edge elevators on a typical pursuit fuselage at altitudes simulating-normal flight and spin conditions
Report presenting lift and elevator hinge-moment characteristics were measured on horizontal tail provided with elevators having three different beveled trailing edges. Results regarding fuselage alone and fuselage interference, lift characteristics of fuselage-tail combination, elevator hinge-moment characteristics, drag, and comparison with data from two-dimensional-flow tests are provided.
Date:
December 1942
Creator:
Gillis, Clarence L.
System:
The UNT Digital Library
Curing of Resin-Wood Combinations by High-Frequency Heating
Note presenting a summary of the results of an investigation of the curing of resin-wood combinations by high-frequency heating. The physical facts pertinent to high-frequency heating are introduced and the procedure is described for measuring dielectric constant and loss from 1 to 100 megacycles. The results indicated that the high-frequency heating process is feasible, flexible, and timesaving.
Date:
December 1942
Creator:
von Hippel, Arthur R. & Dietz, A. G. H.
System:
The UNT Digital Library
Effect of airplane design efficiency and engine economy on range
Report presenting an examination of the effects of variations in efficiency parameters, including engine economy, aerodynamic efficiency, and structural efficiency, on airplane performance. Efficiency parameters were found to be extremely ineffective in adjusting the airplane performance to its tactical mission as compared to primary parameters like altitude, power, gross weight, and wing area.
Date:
December 1942
Creator:
Brevoort, Maurice J.; Stickle, George W. & Hill, Paul R.
System:
The UNT Digital Library
Effect of Changes in Aspect Ratio, Side Area, Flight-Path Angle, and Normal Acceleration on Lateral Stability
Report presenting computations made to determine the effect of changes in wing aspect ratio, additional side area, flight-path angle, and normal acceleration on the relation between the fin area and the dihedral angle required for spiral and for oscillatory lateral stability for a hypothetical airplane of the pursuit or fighter categories. The diagrams indicate that the effect of wing aspect ratio on lateral stability is small.
Date:
December 1942
Creator:
Bamber, M. J.
System:
The UNT Digital Library
The Effect of Solidity, Blade Section, and Contravane Angle on the Characteristics of an Axial-Flow Fan
Report presenting an axial flow fan tested with 5, 9, 12, 18, and 24 blades and with two different blade sections. The range of contravane angle and blade angle without contravanes was extended past results published for the same fan previously.
Date:
December 1942
Creator:
Bell, E. Barton & DeKoster, Lucas J.
System:
The UNT Digital Library
The Effect of Various Surface Conditions on Press Fits of Steel Bushings and 17S-T Aluminum-Alloy Fittings
Report presenting testing of specimens of 17S-T aluminum-alloy fittings with pressed-in steel bushings for various surface conditions. The surface conditions tested included bare surfaces, aonidcal coating and steel cadmium-plate, and one surface treated and the other bare, both without lubrication and with Gredag No. 83 as a lubricant. The calculated coefficients of friction for the various press fits for the investigation ranged from 0.33 for the unlubricated contact of bare steel and aluminum to 0.09 for the specimen with the unlubricated cadmium-plated bushing.
Date:
December 1942
Creator:
Hartmann, E. C. & Reedy, J. F.
System:
The UNT Digital Library
An Exploration of the Longitudinal Tensile and Compressive Properties Throughout an Extruded Shape of 24S-T Aluminum Alloy
Note presenting an investigation of tensile and compressive properties of specimens cut from an extruded shape of 24S-T aluminum alloy. The tensile strengths, tensile yield strengths, elongations, and compressive yield strengths of both the uncrystallized and recrystallized portions were determined. The strength of a cross section of an extruded shape is the weighted average of the strengths of the unrecrystallized and the recrystallized areas.
Date:
December 1942
Creator:
Paul, D. A.
System:
The UNT Digital Library
Flight tests of NACA jet-propulsion exhaust stacks on the supermarine spitfire airplane
Report presenting an investigation of the Supermarine Spitfire airplane equipped with exhaust stacks designed according to the jet-propulsion exhaust-stack system developed by the NACA. An increase in the high speed of the airplane of 6 mph was obtained as compared with the airplane equipped with the Rolls Royce exhaust system. Results regarding performance and exhaust-flame visibility are provided.
Date:
December 1942
Creator:
Turner, L. Richard & White, Maurice D.
System:
The UNT Digital Library
Generalized Selection Charts for Harrison and Tubular Intercoolers
Report presenting a generalized selection chart for tubular cross-flow intercoolers and another chart for Harrison cross-flow intercoolers. The charts make it easier to select intercoolers for any particular set of design conditions and under limitations on dimensions and pressure drops.
Date:
December 1942
Creator:
Wood, George P. & Tifford, Arthur N.
System:
The UNT Digital Library
High-Speed Wind-Tunnel Tests of a 1/6-Scale Model of a Twin-Engine Pursuit Airplane
Report presenting testing of a scale model of a twin-engine pursuit airplane in order to investigate the possibility of high-speed diving difficulties and to find remedies for them. Most of the data were obtained in force tests, although some pressure-distribution measurements, elevator hinge moments, and wake surveys were also made. The tests showed that the airplane will experience serious diving moments above lift coefficients of 0.5 at a Mach number of 0.65, and 0.1 at a Mach number of 0.725.
Date:
December 1942
Creator:
Ganzer, Victor M.
System:
The UNT Digital Library
An Investigation of Aircraft Heaters 5: Theory and Use of Heat Meters for the Measurement of Rates of Heat Transfer Which Are Independent of Time
Report presenting a description of a meter which will measure the heat flowing through surfaces. Its operation is based on the measurement of the temperature decrease through a fixed thermal resistance. Only the case of heat flow independent of time is discussed in this particular report.
Date:
December 1942
Creator:
Martinelli, R. C.; Morrin, E. H. & Boelter, L. M. K.
System:
The UNT Digital Library
An Investigation of Aircraft Heaters 6: Heat Transfer Equations for the Single Pass Longitudinal Exchanger
Report presenting an analysis of parallel flow and contraflow single pass heat exchangers, together with charts which allow the direct evaluation of the thermal performance of the units without recourse to trail-and-error techniques. The use of equations and charts is illustrated by several examples.
Date:
December 1942
Creator:
Martinelli, R. C.; Morrin, E. H. & Boelter, L. M. K.
System:
The UNT Digital Library
An Investigation of Aircraft Heaters 7: Thermal Radiation From Athermanous Exhaust Gases
"Equations and necessary data for the calculation of the gaseous radiation from water vapor and carbon dioxide in an exhaust gas heat exchanger are presented. A typical calculation is included" (p. 1).
Date:
December 1942
Creator:
Martinelli, R. C.; Morrin, E. H. & Boelter, L. M. K.
System:
The UNT Digital Library
The Limiting Useful Deflections of Corrugated Metal Diaphragms
Note presenting measurements made on a large number of corrugated diaphragms of similar shapes but of various sizes and various metals. Some of the materials studied include phosphor bronze, beryllium copper, A-Nickel, B-Monel, K-Monel, and Inconel. Results regarding pressure deflection, hysteresis, drift, aftereffect, recovery, and zero shift, and design and selection of diaphragms are provided.
Date:
December 1942
Creator:
Wildhack, W. A. & Goerke, V. H.
System:
The UNT Digital Library
A method for calculating heat transfer in the laminar flow region of bodies
Report presenting a practical method for determining the chordwise distribution of the rate of heat transfer from the surface of a wing or body of revolution to air. The method is limited to use to the determination of heat transfer fro the forward section of such bodies when the flow is laminar.
Date:
December 1942
Creator:
Allen, H. Julian & Look, Bonne C.
System:
The UNT Digital Library
A method for determining the rate of heat transfer from a wing or streamline body
From Summary: "A method for calculating the rate of heat transfer from the surface of an airfoil or streamline body is presented. A comparison with the results of an experimental investigation indicates that the accuracy of the method is good. This method may be used to calculate the heat supply necessary for heat de-icing or in ascertaining the heat loss from the fuselage of an aircraft operating at great altitude, for example."
Date:
December 1942
Creator:
Frick, Charles W., Jr. & McCullough, George B.
System:
The UNT Digital Library