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Technical Report Archive and Image Library
428
National Advisory Committee for Aeronautics Collection
346
Texas Attorney General Opinions
263
Office of Scientific & Technical Information Technical Reports
96
TRAIL Microcard Collection
53
World War Two Collection
20
Government Documents A to Z Digitization Project
18
Texas State Publications
16
World War Two Newsmaps
14
Texas Soil Surveys
2
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840 Matching Results
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20-MM aircraft gun matériel M1 and M2.
"In addition to a description of the 20-mm aircraft gun matériel M1 and M2, this manual contains technical information required for the identification, use, and care of the matériel."
Date:
April 2, 1942
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
100 Areas: April 9--April 15
Reported are: physics (B Pile, D Pile, F Pile, general physics); and water, corrosion, and engineering (process water control and pressure drop studies, purging studies, corrosion, graphite expansion, downcomer -- B Area).
Date:
April 19, 1946
Creator:
Jordan, W. E.
Object Type:
Report
System:
The UNT Digital Library
100 Areas: April 16--April 22
Reported are: physics (B pile, D pile, F pile, general physics); and water, corrosion and engineering (process water control and pressure drop studies, purging studies, removal of process tube B-3671).
Date:
April 26, 1946
Creator:
Jordan, W. E.
Object Type:
Report
System:
The UNT Digital Library
100 Areas technical activities report: Physics, March 1947
U.M. Staebier reports from the pile areas. Foil tests were conducted at the B pile. A power coefficient test was performed at the D pile; special request materials and reactivity balance are also reported. The new No. 2 horizontal rod of the F pile has been slightly resized. Graphite temperature readings, thermal conductivity calculations, special request materials, and reactivity balance are also reported. General physics are considered. Production tests 105-85-P and 106-1-P are reported. Egg testing at the 305 test pile is discussed. (GHH)
Date:
April 4, 1947
Creator:
Gast, P. F.
Object Type:
Report
System:
The UNT Digital Library
The Acute Radiotoxicity of Injected Na²⁴ for Mice and Rats
The following report describes the results from studies based on the toxicity and metabolism of radioactive substances derived from uranium fission. Rats and mice were administered radioactive sodium and reactions and changes were studied.
Date:
April 15, 1948
Creator:
Finkle, R. D.; Snyder, R. H.; Kisieleski, Walter E.; Teresi, J.; Broido, A. & Tompkins, P. C.
Object Type:
Report
System:
The UNT Digital Library
Additional Results in a Free-Flight Investigation of Control Effectiveness of Full-Span, 0.2-Chord Plain Ailerons at High Subsonic, Transonic, and Supersonic Speeds to Determine Some Effects of Wing Sweepback, Aspect Ratio, Taper, and Section Thickness Ratio
Report discussing an aerodynamic control effectiveness study using free-flight, rocket-propelled test vehicles. Information about the effects of wing sweepback, aspect ratio, taper ratio, and section thickness ratio on the rolling effectiveness of full-span, sealed ailerons is provided.
Date:
April 23, 1948
Creator:
Sandahl, Carl A. & Strass, H. Kurt
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic Characteristics of a Slot-Lip Aileron and Slotted Flap for Dive Brakes
From Introduction: "As a part of this investigation, a study is being made of test results obtained during the development of devices designed primarily for other purposes, such as high lift or lateral control, but which may also be used for dive control. These results have been reanalyzed and are herein presented in a form that should make them convenient for design purposes."
Date:
April 1941
Creator:
Rogallo, F. M.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic characteristics of a wing with quarter-chord line swept back 35 degrees, aspect ratio 4, taper ratio 0.6, and NACA 65A006 airfoil section: Transonic-bump method
From Introduction: "This paper presents the results of the investigation of wing-alone and wing-fuselage combinations employing a wing with the quarter-chord line swept back 35^o, aspect ratio 4, taper ratio 0.6, and NACA 65A006 airfoil section."
Date:
April 21, 1949
Creator:
Sleeman, William C., Jr. & Becht, Robert E.
Object Type:
Report
System:
The UNT Digital Library
The Aerodynamic Effects of Rockets and Fuel Tanks Mounted Under the Swept-Back Wing of an Airplane Model
From Summary: "The effects of externally mounted rockets and fuel tanks on the aerodynamic characteristics of an airplane model with a swept-back wing are presented in this report."
Date:
April 23, 1948
Creator:
Boddy, Lee E. & Morrill, Charles P., Jr.
Object Type:
Report
System:
The UNT Digital Library
Air-Flow Behavior Over the Wing of an XP-51 Airplane as Indicated by Wing-Surface Tufts at Subcritical and Supercritical Speeds
Report presenting the air-flow behavior over the wing of an XP-51 airplane including photographs of tufts attached to the wing surface and chordwise pressure distributions. A comparison of tuft studies from flight results are compared with results from wind-tunnel testing. Three types of flow were observed: steady flow, unsteady flow, and break-away flow are provided.
Date:
April 24, 1947
Creator:
Beeler, De E.
Object Type:
Report
System:
The UNT Digital Library
Air-Stream Surveys in the Vicinity of the Tail of a 1/8.33-Scale Powered Model of the Republic XF-12 Airplane
"The XF-12 airplane was designed by Republic Aviation Corporation to provide the Army Air Forces with a high performance, photo reconnaissance aircraft. A series of air-stream surveys were made n the vicinity of the empennage of a 1/8.33-scale powered model of the XF-12 airplane in the Langley 19-foot pressure tunnel. Surveys of the vortical-tail region were made through a range of yaw angles of plus or minus 20 degrees at a high and low angle of attack" (p. 1).
Date:
April 8, 1947
Creator:
Foster, Gerald V.
Object Type:
Report
System:
The UNT Digital Library
Altitude performance of AN-F-58 fuels in J33-A-21 single combustor
Report discussing three fuels conforming to AN-F-58 specification were investigated in order to determine the influence of boiling temperatures and aromatic content on altitude performance in single combustor of a 4600-pound-thrust turbojet engine.
Date:
April 8, 1949
Creator:
Dittrich, Ralph T. & Jackson, Joseph L.
Object Type:
Report
System:
The UNT Digital Library
Altitude-Wind-Tunnel Investigation of the 19B-2, 19B-8 and 19XB-1 Jet- Propulsion Engines: 4 - Analysis of Compressor Performance
"Investigations were conducted in the Cleveland altitude wind tunnel to determine the performance and operational characteristics of the 19B-2, 19B-8, and 19XS-1 turbojet engines. One objective was to determine the effect of altitude, flight Mach number, and tail-pipe-nozzle area on the performance characteristics of the six-stage and ten-stage axial-flow compressors of the 19B-8 and 19XB-1 engines, respectively, The data were obtained over a range of simulated altitudes and flight Mach numbers" (p. 1).
Date:
April 25, 1947
Creator:
Dietz, Robert O. & Kuenzig, John K.
Object Type:
Report
System:
The UNT Digital Library
Altitude-Wind-Tunnel Investigation of the 19B-2, 19B-8, and 19XB-1 Jet Propulsion Engines, 4 - Performance and Windmilling Drag Characteristics
The performance characteristics of the 19B-8 and 19XB-1 turbojet engines and the windmilling-drag characteristics of the 19B-6 engine were determined in the Cleveland altitude wind tunnel. The investigations were conducted on the 19B-8 engine at simulated altitudes from 5000 to 25,000 feet with various free-stream ram-pressure ratios and on the 19XB--1 engine at simulated altitudes from 5000 to 30,000 feet with approximately static free-stream conditions.
Date:
April 9, 1947
Creator:
Fleming, William A. & Dietz, Robert O., Jr.
Object Type:
Report
System:
The UNT Digital Library
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.
Object Type:
Report
System:
The UNT Digital Library
An analysis of a highly compounded two-stroke-cycle compression-ignition engine
This report presents an analysis of a compound engine operating with manifold pressures ranging from 60 to 110 lb/sq in. absolute and discusses the effects of engine limits (peak cylinder pressure and turbine-inlet temperature) and component efficiency.
Date:
April 4, 1949
Creator:
Tauschek, Max J.; Sather, Bernard I. & Biermann, Arnold E.
Object Type:
Report
System:
The UNT Digital Library
An analysis of available data on effects of wing-fuselage-tail and wing-nacelle interference on the distribution of the air load among components of airplanes
From Introduction: "The purpose of the present paper is to summarize the available data on the effects of wing-fuselage-tail and wing-nacelle interference on the distribution of the air load among aircraft components. Some discussion is also given of the effects of center-of-gravity position."
Date:
April 11, 1949
Creator:
Wollner, Bertram C.
Object Type:
Report
System:
The UNT Digital Library
An Analysis of the Compressive Strength of Honeycomb Cores for Sandwich Construction
Note presenting an analysis that was undertaken as part of an investigation of low-density fibrous core materials for sandwich construction. This particular investigation found that honeycomb structure exhibit promise as core materials because of their high strength-weight ratios. A formula has been derived that considerably reduced the amount of testing necessary to evaluate the effectiveness of the materials.
Date:
April 1947
Creator:
Norris, Charles B.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the Effects of Various Mass, Aerodynamic, and Dimensional Parameters on the Dynamic Lateral Stability of the Douglas D-558-2 Airplane
Report presenting an investigation of the effects of various mass, aerodynamic, and dimensional parameters on the dynamic lateral stability of the Douglas D-558-2 airplane. Results regarding an airplane with the flaps and gear retracted, airplane at sea level with flaps deflected 50 degrees and landing gear lowered, and effect of assumed modifications to airplane are provided.
Date:
April 15, 1949
Creator:
Queijo, M. J. & Michael, W. H., Jr.
Object Type:
Report
System:
The UNT Digital Library
An analysis of the factors that affect the exhaust process of a four-stroke-cycle reciprocating engine
From Introduction: "An investigation was made to determine the relative significance of the factors that affect the exhaust process; the effects that an exhaust-process change has on cylinder charging were given special attention. Differential equations of this nature have been developed by Kemble (reference 1) but the forms of these equations are such that general conclusions regarding the various factors affecting the exhaust process cannot be determined."
Date:
April 1947
Creator:
Stanitz, John D.
Object Type:
Report
System:
The UNT Digital Library
Analysis of wind-tunnel stability and control tests in terms of flying qualities of full-scale airplanes
From Introduction: "The purpose of this paper is to outline a suggested form of presentation of the results of a stability and control investigation in terms of flying qualities as defined in reference 1 and to systematize and review briefly the analytical work required for this type of presentation. No effort is made to specify definite test procedures."
Date:
April 1, 1943
Creator:
Kayten, Gerald G.
Object Type:
Report
System:
The UNT Digital Library
Analytical investigation of distribution of centrifugal stresses and their relation to limiting operating temperatures in gas-turbine blades
From Introduction: "Analyses that provide a basis for comparing the centrifugal-stress distributions inherent in jet-engine turbine blades of several designs currently in use were therefore made and are presented."
Date:
April 12, 1948
Creator:
Kemp, Richard H. & Morgan, William C.
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1939
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1939, activities, finance, honors, service reports, organizational leadership, and other information about scouting programs.
Date:
April 1, 1940
Creator:
Boy Scouts of America
Object Type:
Report
System:
The Portal to Texas History
Appendix to RSC--Hanford report. Trip report, Hanford Works, March 30--April 14, 1948; see also GEH-14040, 14712
This trip was to provide an answer to these questions: Are Hanford meteorological instrumentation, methods, and records adequate? Do they conform to generally recognized practice? Are they effectively utilized? What is the percentage frequency of wind classified according to conditions normal, least favorable and most favorable for dilution? What is the habitability of the Wahluke Slope north and northeast of the Columbia River, considering stack gases, various stack heights, any pertinent meteorological features? What is the habitability if the only contaminating sources are the piles? In preparation for and in the event of a major catastrophe with attendant relief and evacuation operations, which additional observation should be taken: What weather data should be assembled from the general vicinity of Hanford: What sampling program should take place immediately after the event. To these may be added a question raised by Dr. Parker in connection with the high level of contamination at the ground in the vicinity of the separations. areas.
Date:
April 14, 1948
Creator:
Wanta, R. C. & White, F. D.
Object Type:
Report
System:
The UNT Digital Library