Resource Type
Collection
Technical Report Archive and Image Library
41
National Advisory Committee for Aeronautics Collection
32
Texas Attorney General Opinions
32
Office of Scientific & Technical Information Technical Reports
17
World War Two Collection
7
World War Two Newsmaps
5
TRAIL Microcard Collection
5
Government Documents A to Z Digitization Project
4
Environmental Policy Collection
1
Texas State Publications
1
Serial/Series Title
NACA Wartime Reports
26
NACA Memorandum Reports
10
NACA Advanced Restricted Reports
9
Atomic Energy Commission Reports
5
Newsmap
5
NACA Advanced Confidential Reports
4
NACA Restricted Bulletins
4
NACA Technical Notes
3
United States Bureau of Mines Reports
2
War Department technical manual
2
12 More
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100 Matching Results
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1 - 24 of
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Airspeed Fluctuations as a Measure of Atmospheric Turbulence
"Increments in structural loads due to atmospheric turbulence can be accurately expressed in terms of flight speed and effective gust velocities (reference 4). Data from which the effective gust velocities could be computed were also obtained during the flights of the XC-35 airplane. These data have been used to determine the significance of the fluctuations in the pilot's indicated-airspeed readings in relation to structural loads to due to atmospheric turbulence" (p. 3).
Date:
July 1945
Creator:
Tolefson, H. B.
Object Type:
Report
System:
The UNT Digital Library
An analysis of life expectancy of airplane wings in normal cruising flight
From Summary: "The independent variables considered in the analysis included stress-concentration factor, stress-load relation, wing loading, design and cruising speeds, design gust velocity, and airplane size. Several methods for estimating fatigue life from gust frequencies are discussed."
Date:
July 1945
Creator:
Putnam, Abbott A.
Object Type:
Report
System:
The UNT Digital Library
ANALYTICAL INFORMATION REPORT FOR THE PERIOD JUNE 1-30, 1945
None
Date:
July 1, 1945
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Axial Fatigue Test at Two Stress Amplitudes of 0.032-Inch 24S-T Sheet Specimens With a Circular Hole
Report presenting testing of the effect of applying a number of cycles of a high fatigue stress followed by a number of cycles of relatively low stress to failure has been investigated on 93 drilled specimens of a 24S-T sheet. The results indicated that any general formula for endurance must take sequence into consideration, which makes overly simple formulas inadequate to describe endurance over varying stress amplitudes.
Date:
July 1945
Creator:
Brueggeman, W. C.; Mayer, M., Jr. & Smith, W. H.
Object Type:
Report
System:
The UNT Digital Library
Blade Design Data for Axial-Flow Fans and Compressors
Report presenting an investigation to obtain blade design data for high-efficiency axial-flow fans and compressors, which were carried out in a two-dimensional low-speed cascade tunnel. The effects of camber, solidity, and stagger on blade turning angle and the shape of pressure distributions were determined for a family of five low-drag airfoils.
Date:
July 1945
Creator:
Bogdonoff, Seymour M. & Bogdonoff, Harriet E.
Object Type:
Report
System:
The UNT Digital Library
Charts for the Minimum-Weight Design of 24S-T Aluminum-Alloy Flat Compression Panels With Longitudinal Z-Section Stiffeners
"Design charts are developed for 24S-T aluminum-alloy flat compression panels with longitudinal z-section stiffeners. These charts make possible the design of the lightest panels of this type for a wide range of design requirements. Examples of the use of the charts are given and it is pointed out on the basis of these examples that, over a wide range of design conditions, the maintenance of buckle-free surfaces does not conflict with the achievement of high structural efficiency" (p. 553).
Date:
July 9, 1945
Creator:
Schuette, Evan H.
Object Type:
Report
System:
The UNT Digital Library
Column and plate compressive strengths of aircraft structural materials: extruded 24S-T aluminum alloy
Report presenting column and plate compressive strengths of extruded 24S-T aluminum alloy determined both within and beyond the elastic range from tests of thin-strip columns and local-instability tests of H-, Z-, and channel-section columns. The tests are part of a research investigation to provide data on the structural strength of various aircraft materials. Results regarding compressive stress-strain curves and column and plate compressive strengths are provided.
Date:
July 1945
Creator:
Heimerl, George J. & Roy, J. Albert
Object Type:
Report
System:
The UNT Digital Library
Column and Plate Compressive Strengths of Aircraft Structural Materials: Extruded 24S-T Aluminum Alloy
Column and plate compressive strengths of extruded 24S-T aluminum alloy were determined both within and beyond the elastic range from tests of thin-strip columns and local-instability tests of H-, Z-,and channel-section columns. These tests are part of an extensive research investigation to provide data on the' structural strength of various aircraft materials. The results are presented in the form of curves and charts that are suitable for use in the design and analysis of aircraft structures.
Date:
July 1945
Creator:
Heimerl, George J. & Roy, J. Albert
Object Type:
Report
System:
The UNT Digital Library
Column and plate compressive strengths of aircraft structural materials: extruded 75S-T aluminum alloy
Report presenting column and plate compressive strengths of extruded 75S-T aluminum alloy both within and beyond the elastic range from tests of thin-strip columns and local-instability tests of H-, Z-, and channel-section columns. The tests are part of an extensive research investigation to provide data on the structural strength of various aircraft materials. Results regarding compressive stress-strain curves and column and plate compressive strengths are provided.
Date:
July 1945
Creator:
Heimerl, George J. & Roy, J. Albert
Object Type:
Report
System:
The UNT Digital Library
Comparison of Structural Efficiencies of Diagonal-Tension Webs and Truss Webs of 24S-T Aluminum Alloy
"A comparison is made of the structural efficiencies of truss webs of 24S-T aluminum alloy with previously published values of the structural efficiencies of diagonal-tension webs of 24S-T aluminum alloy on the basis of identical allowable stresses. It is concluded that the diagonal-tension beam (web and flanges) can usually be built to be a more efficient beam than the truss beam, even though over a small range the web of a Warren truss beam is slightly more efficient than the web of a diagonal-tension beam" (p. 1).
Date:
July 1945
Creator:
Ochiltree, David W.
Object Type:
Report
System:
The UNT Digital Library
A Comparison of Two Flight-Test Procedures for the Determination of Aileron Control Capabilities of an Airplane
Report presenting a comparison of two flight-test procedures for the determination of the aileron control capabilities of an airplane. The procedures consist of performing rudder-fixed aileron rolls from straight unbanked flight and from steady turning flight. Results regarding rate of roll comparison and sideslip-angle comparison are provided.
Date:
July 1945
Creator:
Skoog, Richard B.
Object Type:
Report
System:
The UNT Digital Library
Consequences of high power levels
This memo discusses the effects of advancing to higher power levels of the 105 Piles (D-Pile). It is concluded that there is no technical reason against a cautious advance to higher powers; the units can be run at higher levels than their rating of 250 MW, or the additional reactivity that they will gain with time may be taken entirely in the form of lower peak temperatures and radiation levels. The decision as to what course to follow between these extremes involves such issues as the best use of uranium and the most effective separation of adequate amounts of product of proper quality.
Date:
July 6, 1945
Creator:
Worthington, H.
Object Type:
Report
System:
The UNT Digital Library
Control of Cylinder Temperatures by Thermostatically Operated Internal-Coolant Valves
Report discusses the results of testing conducted to determine the performance of automatic, internal-coolant valves actuated by cylinder temperatures.The performance of the valves with respect to temperature sensitivity, rapidity of response, and hunting characteristics is described. The relative effects on cylinder performance obtained by internally supplying water and additional fuel were also examined.
Date:
July 1945
Creator:
Biermann, Arnold E.; Henneberry, Hugh M. & Miller, George R.
Object Type:
Report
System:
The UNT Digital Library
CORROSION OF METALS IN URANYL NITRATE SOLUTION
None
Date:
July 19, 1945
Creator:
Goldowski, N. & Rucker, L.
Object Type:
Report
System:
The UNT Digital Library
CORROSION OF METALS IN URANYL SULFATE SOLUTION
None
Date:
July 19, 1945
Creator:
Goldowski, N.; Carlson, W. & Rucker, L.
Object Type:
Report
System:
The UNT Digital Library
Determination of Barium in AAA Pitchblende Gangue
None
Date:
July 11, 1945
Creator:
McCoy, J. R. & Martin, G. L.
Object Type:
Report
System:
The UNT Digital Library
The development and application of high-critical-speed nose inlets
From Summary: "An analysis of the nose-inlet shapes developed in previous investigations to represent the optimum from the standpoint of critical speed has shown that marked similarity exists between the nondimensional profiles of inlets which have widely different proportions and critical speeds. With the nondimensional similarity of such profiles established, the large differences in the critical speeds of these nose inlets must be a function of their proportions. An investigation was undertaken in the Langley 8-foot high-speed tunnel to establish the effects of nose-inlet proportions on critical Mach number and to develop a rational method for the design of high-critical-speed nose inlets to meet desired requirements."
Date:
July 1945
Creator:
Baals, Donald D.; Smith, Norman F. & Wright, John B.
Object Type:
Report
System:
The UNT Digital Library
The Dibutyl Carbitol Extraction Procedure for the Separation of Tubanyl and Phosphate Ions
"This report is concerned with the effectiveness of this washback procedure in reducing the phosphate concentration and also with other methods by which the simultaneous extraction of phosphate along with tuballoy may be minimized."
Date:
July 12, 1945
Creator:
Lord, E. J.; Andrews, L. J. & Gates, J. W.
Object Type:
Report
System:
The UNT Digital Library
Domestic disturbances
"This manual presents the principles for the employment of troops during domestic disturbances and the essential substances of the more important laws relating to the employment of military forces in the aid of civil authorities with the applicable War Department policies"
Date:
July 30, 1945
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
EARLY METHODS FOR CASTING URANIUM AT IOWA STATE COLLEGE
None
Date:
July 1, 1945
Creator:
Gray, C.F.
Object Type:
Report
System:
The UNT Digital Library
Economy of internally cooling only the overheated cylinders of aircraft engines
Report presenting an analysis of cylinder-to-cylinder temperature and mixture distributions of four different aircraft engines to determine the possible economy of automatically supply water or additional fuel to only those cylinders having excessive temperatures. The cooling problem as distinguished from the fuel-knock problem was studied and an analysis limited to those cases in which additional cooling is ordinarily obtained by carburetor enrichment was made.
Date:
July 1945
Creator:
Biermann, Arnold E.; Miller, George R. & Henneberry, Hugh M.
Object Type:
Report
System:
The UNT Digital Library
Effect of Blade Loading of the Climb and High-Speed Performance of a Three-Blade Hamilton Standard No. 6507A-2 Propeller on a Republic P-47D Airplane
Report presenting climb and high-speed tests of a Hamilton Standard No. 6507A-2 three-blade propeller, which have been made to determine the effect of blade loading on propeller efficiency. The normal and military power climb efficiencies were found to be about equal at altitudes below 16,000 feet.
Date:
July 1945
Creator:
Gardner, John J.
Object Type:
Report
System:
The UNT Digital Library
Effect of leakage past aileron nose on aerodynamic characteristics of plain and internally balanced ailerons on NACA 66(215)-216, a = 1.0 airfoil
Report presenting an investigation in two-dimensional flow to determine the effect of leakage past the aileron nose on the aerodynamic characteristics of ailerons. The effects of amount and type of leakage, aileron contour, and Mach and Reynolds number are investigated.
Date:
July 1945
Creator:
Bird, J. D.
Object Type:
Report
System:
The UNT Digital Library
Effect of Mach and Reynolds Numbers on the Maximum Lift Coefficient Obtainable in Gradual and Abrupt Stalls of a Pursuit Airplane Equipped With a Low-Drag Wing
Report discussing flight tests on a low-drag wing pursuit airplane to determine the effects of Mach and Reynolds numbers on the maximum lift coefficient obtainable in gradual and abrupt stalls. The obtainable maximum lift coefficient was found to be greatly affected by the Mach and Reynolds numbers in gradual stall. In abrupt stalls, the maximum lift coefficient was affected by the Mach number, but not the Reynolds number.
Date:
July 6, 1945
Creator:
Spreiter, John R.; Galster, George M. & Blair, William K.
Object Type:
Report
System:
The UNT Digital Library