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Texas Attorney General Opinions
575
Technical Report Archive and Image Library
528
National Advisory Committee for Aeronautics Collection
356
TRAIL Microcard Collection
120
Office of Scientific & Technical Information Technical Reports
118
Texas State Publications
33
USGS Topographic Map Collection
33
World War Two Collection
25
World War Two Newsmaps
19
Government Documents A to Z Digitization Project
12
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NACA Technical Notes
148
Atomic Energy Commission Reports
143
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95
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54
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44
MDDC (Series)
43
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36
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28
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20
15 Minute Series (Topographic)
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1,327 Matching Results
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Altitude-Wind-Tunnel Investigation of Performance of Several Propellers on YP-47M Airplane at High Blade Loadings 4 - Curtiss 732-1C2-0 Four-Blade Propeller
"An altitude-wind-tunnel investigation has been made to determine the performance of a Curtiss 732-1C2-0 four-blade propeller on a YP-47M airplane at high blade loadings and engine power. Propeller characteristics were obtained for a range of power coefficients from 0.30 to 1.00 at free-stream Mach numbers of 0.40 and .50" (p. 1).
Date:
November 26, 1946
Creator:
Saari, Martin J. & Sorin, Solomon M.
Object Type:
Report
System:
The UNT Digital Library
Altitude-Wind-Tunnel Investigation of Performance of Several Propellers on YP-47M Airplane at High Blade Loadings 5 - Curtiss 836-14C2-18R1 Four-Blade Propeller
An investigation of the performance of several propellers on the YP-47M airplane at high blade loadings has been conducted in the Cleveland altitude wind tunnel at the request of the Air Materiel Command, Army Air Forces. As part of the program, a study was made of a Curtiss 836-14C2-18R1 four-blade propeller. The investigation was made for a range of power coefficients from 0.10 to 1.00 at free-stream Mach numbers of 0.30, 0.40, and 0.50 for density altitudes from 10,000 to 45,000 feet, engine powers from 150 to 2500 brake horsepower, and for engine speeds from 1000 to 2900 rpm.
Date:
December 2, 1946
Creator:
Saari, Martin J. & Wallner, Lewis E.
Object Type:
Report
System:
The UNT Digital Library
Altitude-Wind-Tunnel Investigation of Performance of Several Propellers on YP-47M Airplane at High Blade Loadings 6 - Hamilton Standard 6507A-2 Four- and Three-Blade Propellers
"An altitude-wind-tunnel investigation has been made to determine the performance of Hamilton Standard 6507A-2 four-blade and three-blade propellers on a YP-47M airplane at high blade loadings and high engine powers. Characteristics of the four-blase propeller were obtained for a range of power coefficients from 0.10 to 1.00 at free-stream Mach numbers of 0.20, 0.30, 0.40. Characteristics of the three-blade propeller were obtained for a range of power coefficients from 0.30 to 1.00 at a free-stream Mach number of 0.40" (p. 1).
Date:
December 19, 1946
Creator:
Saari, Martin J. & Sorin, Solomon M.
Object Type:
Report
System:
The UNT Digital Library
Altitude-wind-tunnel investigations of thrust augmentation of a turbojet engine 1: Performance with tail-pipe burning
From Introduction: "Performance results of the tail-pipe burning investigation on the TG-180 turbojet engine and a comparison of experimental results with theoretical calculations are presented."
Date:
September 25, 1946
Creator:
Fleming, W. A. & Dietz, R. O.
Object Type:
Report
System:
The UNT Digital Library
Altitude-wind-tunnel tests of power-plant installation in jet-propelled fighter
From Introduction: "The research program included clean-up tests (unpublished data) and stability and control tests (reference 1) made in the NACA Langley full-scale tunnel. An investigation of the aerodynamic characteristics of the power-plant installation in the Cleveland altitude wind tunnel is discussed in this report."
Date:
February 1946
Creator:
Preston, G. Merritt; Black, Fred O., Jr. & Jagger, James M.
Object Type:
Report
System:
The UNT Digital Library
Alto Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1946
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Alto Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1946
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Am I proud! : I'm fighting famine-- by canning food at home.
This is a color poster with a 1/4" inch border. A dark-haired woman with a wide-eyed expression holds three large glass jars of vegetables in her arms. Three more jars can be seen at the lower area of the picture. The woman wears a ruffled apron.
Date:
1946
Creator:
Williams, Dick.
Object Type:
Poster
System:
The UNT Digital Library
Analyses of Alaska Coals
Report issued by the Bureau of Mines discussing the coal fields of Alaska. Analyses of the Alaskan coal fields are presented in detail. This report includes tables, and a map.
Date:
1946
Creator:
Gates, George O. & Fieldner, Arno Carl
Object Type:
Report
System:
The UNT Digital Library
Analysis of Available Data on the Effects of Tabs on Control-Surface Hinge Moments
From Introduction: "A collection balanced-aileron test data is given in reference 1. Reference 2 presents a collection of data applicable to the design of tail surfaces. The results of analyses of data for control surfaces with internal balances, plain-overhang and Frise balances, beveled trailing edges, and unshielded horn balances have already been published in references 3 to 6."
Date:
May 1946
Creator:
Crandall, Stewart M. & Murray, Harry E.
Object Type:
Report
System:
The UNT Digital Library
Analysis of cooling limitations and effect of engine-cooling improvements on level-flight cruising performance of four-engine heavy bomber
From Introduction: "The difficulties experienced in cooling the exhaust-valve seats of the rear-row cylinders have been overcome to a considerable extent by improving the mixture distribution through application of the injection impeller (reference 1) and by augmenting the flow of cooling air to the critical baffles (reference 2). Flight tests of this airplane (reference 3) indicated that the temperatures of exhaust-valve seats on rear-row cylinders were markedly lowered by these modifications and that airplane range, altitude, and gross weight previously limited by these temperatures could be greatly increased."
Date:
March 14, 1946
Creator:
Marble, Frank E.; Miller, Marlon A. & Bell, E. Barton
Object Type:
Report
System:
The UNT Digital Library
Analysis of Deep Rectangular Shear Web Above Buckling Load
From Introduction: "An analysis of a square web above the buckling load was presented in reference 1. The analysis of reference 1 therefore was repeated for a shear web with depth/width = 2.5. Comparison of the results with those for the square web then would indicate the effect in the depth-width ratio."
Date:
March 1946
Creator:
Levy, Samuel; Woolley, Ruth M. & Corrick, Josephine N.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Effect of Rolling Pull-Outs on Wing and Aileron Loads of a Fighter Airplane
An analysis was made to determine the effect of rolling pull-out maneuvers on the wing and aileron loads of a typical fighter airplane, the P-47B. The results obtained indicate that higher loads are imposed upon wings and ailerons because of the rolling pull-out maneuver, than would be obtained by application of the loading requirements to which the airplane was designed. An increase of 102 lb or 15 percent of wing weight would be required if the wing were designed for rolling pull-out maneuver. It was also determined that the requirements by which the aileron was originally designed were inadequate.
Date:
March 1946
Creator:
Pearson, Henry A. & Aiken, William S., Jr.
Object Type:
Report
System:
The UNT Digital Library
The Analysis of Impurities in Various Stages of Recycled Carbon Tetrachloride and Correlation with Chlorination Properties
The following report discusses findings resulting from experiments on recycled carbon tetrachloride at various stages of the proposed purification process.
Date:
May 23, 1946
Creator:
Hudson, R. L.; Burkhart, L. E. & Larson, C. E.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Jet-Propulsion-Engine Combustion-Chamber Pressure Losses
From Summary: "The development and the use of a chart for estimating the pressure losses in jet-engine combustion chambers are described. By means of the chart, the pressure losses due to fluid friction and to momentum changes in the air flow accompanying combustion can be separately evaluated. The over-all pressure losses computed from the pressure-loss chart are within 7 percent of the experimental values for the three types of combustion chambers considered herein."
Date:
July 31, 1946
Creator:
Pinkel, I. Irving & Shames, Harold
Object Type:
Report
System:
The UNT Digital Library
Analysis of Ore Residues for Ionium and Protactinium
None
Date:
December 1, 1946
Creator:
Katzin, L.I.; Van Winkle, Q. & Sedlet, J.
Object Type:
Report
System:
The UNT Digital Library
Analysis of propeller efficiency losses associated with heated-air thermal de-icing
From Introduction: "The results of the tests made with unheated internal flow are reported in reference 1. It is the purpose of this paper to attempt to express simply the efficiency loss as a function of the parameters which govern propeller operation and the internal air flow. The derived equations are correlated with the data presented in reference 1."
Date:
July 1946
Creator:
Corson, Blake W. & Maynard, Julian D.
Object Type:
Report
System:
The UNT Digital Library
Analysis of spark-ignition engine knock as seen in photographs taken at 200,000 frames per second
Report discussing a motion picture of the development of knock in a spark-ignition engine, which consists of 20 photographs taken at intervals of 5 microseconds, or at a rate of 200,000 photographs per second, with an equivalent wide-open exposure time of 6.4 microseconds for each photograph.
Date:
1946~
Creator:
Miller, Cearcy D.; Olsen, H. Lowell; Logan, Walter O., Jr. & Osterstrom, Gordon E.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the airspeeds and normal accelerations of Boeing S-307 airplanes in commercial transport operation
From Introduction: "The present paper has been prepared to give the results of the analysis of the V-G records obtained from three Boeing S-307 airplanes operating in Caribbean region and the northern part of South America during the period from 1940 to 1944."
Date:
September 1946
Creator:
Peiser, A. M. & Walker, W. G.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the airspeeds and normal accelerations of Douglas DC-3 airplanes in commercial transport operation
From Introduction: "The present report is the second prepared to give the results of an analysis of V-G data from commercial transport airplanes. The present report is concerned with an analysis of data obtained with Douglas DC-3 airplanes flying over three transcontinental routes in the United States."
Date:
September 1946
Creator:
Peiser, A. M.
Object Type:
Report
System:
The UNT Digital Library
An Analysis of the Factors Affecting the State of Fuel and Air Mixtures
From Introduction: "It is the purpose of this paper to describe the physical properties that are necessary to specify mixture quality in a system containing fuel and dry air and to evaluate the theoretical rolation between these properties and the physical properties of the mixture."
Date:
May 1946
Creator:
Gilbert, Mitchell; Howard, John N. & Hicks, Bruce L.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the fatigue life of an airplane wing structure under overload conditions
From Introduction: "Fatigue life expectancy in normal transport operations was investigated in reference 1 and was found to be of equal importance with single-gust life. The effect of overload operation of transport airplanes on the probability of encountering single critical gusts was investigated in reference 2 and the frequency of critical gusts was found to increase rapidly with overload. The effect of overload operation on fatigue strength, however, has not heretofore been evaluated, hence the investigations of references 1 and 2 are combined herein to permit such evaluation and to determine the relative importance of fatigue and single-gust failures under conditions of overload operation."
Date:
February 1946
Creator:
Putnam, Abbott A. & Reisert, Thomas D.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the indications of the University of Chicago airborne turbulence indicator in gusty air
From Introduction: "The present report has been prepared to discuss the indications obtained from the University of Chicago turbulence indicator in relation to simultaneous measurement of atmospheric gustiness made by the NACA, which are summarized herein."
Date:
August 1946
Creator:
Tolefson, H. B. & Pratt, K. G.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the main spray characteristics of some full-size multi-engined flying boats
From Introduction: "Because of the importance of spray height, it is the purpose of the work considered in this report to attempt to determine a correlation for the main spray height in relatively smooth water."
Date:
July 1946
Creator:
Locke, F. W. S., Jr.
Object Type:
Report
System:
The UNT Digital Library