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Office of Scientific & Technical Information Technical Reports
170
Congressional Research Service Reports
112
Government Accountability Office Reports
35
Technical Report Archive and Image Library
25
National Advisory Committee for Aeronautics Collection
18
TRAIL Microcard Collection
5
Boy and Girl Scout Annual Reports
2
Texas State Publications
2
D. Jack Davis Art Education Collection
1
Harris and Eliza Kempner
1
Country
348 Matching Results
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Preliminary investigation of the flying qualities of airplanes
"The National Advisory Committee for Aeronautics is undertaking an investigation of the flying qualities of airplanes. The work consists in the determination of the significant qualities susceptible of measurement, the development of the instruments required to make the measurements, and the accumulation of data on the flying qualities of existing airplanes, which data are to serve as a basis for quantitative specifications for the flying qualities of future designs" (p. 449).
Date:
March 29, 1940
Creator:
Soulé, H. A.
System:
The UNT Digital Library
Measurement of Density of Liquid UF6
This report describes a method and apparatus used to determine the density of liquid sodium hexafluoride. The report includes a drawing of the density cell used in the experiment.
Date:
March 29, 1942
Creator:
Priest, Homer F.
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1943
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1943, activities, membership, cooperating agencies, organizational leadership, and other information about scouting programs.
Date:
March 29, 1944
Creator:
Boy Scouts of America
System:
The Portal to Texas History
Determination of possibility of film removal by increased water flow
None
Date:
March 29, 1945
Creator:
unknown
System:
The UNT Digital Library
Wind-Tunnel Tests of a Portion of a PV-2 Helicopter Rotor Blade
From Summary: "A portion of a PV-2 helicopter rotor blade has been tested in the 6- by 6-foot test section of the Langley stability tunnel to determine if the aerodynamic characteristics were seriously affected by cross flow or fabric distortion. The outer portion of the blade was tested as a reflection plane model pivoted about the tunnel wall to obtain various angles of cross flow over the blade. Because the tunnel wall acts as a plane of symmetry, the measured aerodynamic characteristics correspond to those of an airfoil having various angles of sweepforward and sweepback. Tests were made with the vents on the lower surface open and also with the vents sealed and the internal pressure held at -20 inches of water producing an internal pressure coefficient of -1.059."
Date:
March 29, 1945
Creator:
Kemp, William B., Jr.
System:
The UNT Digital Library
Effects of temperature distribution and elastic properties of materials on gas-turbine-disk stresses
From Summary: "Calculations were made to determine the influence of changes in temperature distribution and in elastic material properties on calculated elastic stresses for a typical gas-turbine disk. Severe temperature gradients caused thermal stresses of sufficient magnitude to reduce the operating safety of the disk. Small temperature gradients were found to be desirable because they produced thermal stresses that subtracted from the centrifugal stresses in the region of the rim."
Date:
March 29, 1947
Creator:
Holms, Arthur G. & Faldetta, Richard D.
System:
The UNT Digital Library
Investigation of the Aerodynamic and Icing Characteristics of a Recessed Fuel Cell Vent Assembly 1: Rear Wall Vent Tube Mounting
An investigation conducted in the icing research tunnel on a ramp type recessed fuel cell vent assembly to determine its aerodynamic, rain, and icing characteristics. Although the vent-tube openings are located in the region of maximum ramp pressure, vent-tube static pressures are marginal for a low flight speed.
Date:
March 29, 1948
Creator:
Ruggeri, Robert S.
System:
The UNT Digital Library
Investigation of Stability and Control Characteristics of a 1/10-Scale Model of a Canadian Tailless Glider in the Langley Free-Flight Tunnel
"An investigation of the stability and control characteristics of a 1/10-scale model of a Canadian tailless glider has been conducted in the 10 Langley free-flight tunnel. The glider designated the N.R.L. tailless glider has a straight center section and outboard panels sweptback 43 deg. along the leading edge of the wing. The aspect ratio is 5.83 and the taper ratio is 0.323. From the results of the investigation and on the basis of comparison with higher-scale static tests of the National Research Council of Canada, it is expected that the longitudinal stability of the airplane will be satisfactory with flap up but unsatisfactory near the stall with flap down" (p. 1).
Date:
March 29, 1949
Creator:
Johnson, Joseph L.
System:
The UNT Digital Library
Low-speed static-stability and rolling characteristics of low-aspect-ratio wings of triangular and modified triangular plan forms
Report presenting a low-speed investigation in the stability tunnel to determine the effects of changes in profile and aspect ratio on the low-speed static-stability and rolling characteristics of triangular wings. The investigation was expanded to determine the effects of adding fins to the upper surface and of cutting portions from the tips of a triangular wing to form low-aspect-ratio tapered wings.
Date:
March 29, 1949
Creator:
Jaquet, Byron M. & Brewer, Jack D.
System:
The UNT Digital Library
Planing Characteristics of Three Surfaces Representative of Hydro-Ski Forms
Report presenting the planing characteristics, as determined by tank tests, of three surfaces representative of hydro-ski forms. One surface had a rectangular plan form with a flat bottom, one had a rectangular plan form with a transversely curved bottom, and the third had a flat bottom and triangular plan form. Results are provided in the form of plots of the load on the water, resistance, trimming moment, and draft against total wetted area with speed and trim as parameters.
Date:
March 29, 1949
Creator:
Wadlin, Kenneth L. & McGehee, John R.
System:
The UNT Digital Library
100 Areas technical activities report -- Engineering, February, 1950
This report covers work done by the Physical Chemistry Group and the Pile Engineering Groups. Subjects covered are as follows: metal exposure details; slug corrosion details; pile control -- thimble removal study; Van Stone flange corrosion details; process tube corrosion details; carbon dioxide experiment; graphite sampling; special pile measurements; routine pile measurements; 105 technical laboratories; P-10; boiling studies; pile annealing studies; gas tube experiment; thermal conductivity and electrical resistivity; x-ray diffraction studies; and stored energy.
Date:
March 29, 1950
Creator:
unknown
System:
The UNT Digital Library
The Damping in Roll of Rocket-Powered Test Vehicles Having Rectangular Wings With NACA 65-006 and Symmetrical Double-Wedge Airfoil Sections of Aspect Ratio 4.5
Report presenting a free-flight investigation of two rocket-powered model configurations to determine the damping in roll. The model had rectangular wings of 4.5 aspect ratio and were the same except for the airfoil sections. Results regarding rolling velocity and total-drag coefficient are provided.
Date:
March 29, 1950
Creator:
Dietz, Albert E. & Edmondson, James L.
System:
The UNT Digital Library
G.E. Co. Hanford Works - Project C-431-A production facility - Sec. A, subcontract G-363, revised design report
The 100-C project is to be located adjacent to the present 100-P Area. It is planned to build an addition to the present 181-B River Pump House using the same elevations for pump settings, intakes, and floors as for the present pump house, thus maintaining the same suction conditions and flood protection as B Area. The 105 Building will be located on higher ground than B Area and, therefore, protection against possible flood damage is assured.
Date:
March 29, 1951
Creator:
unknown
System:
The UNT Digital Library
General Electric Company Hanford Works, Project C-431-A Production Facility-Section A, design report
The 100-C project is to be located adjacent to the present 100-B Area. It is planned to build an addition to the present 181-B river pump house using the same elevations for pump settings, intakes, and floors as for the present pump house, thus maintaining the same suction conditions and flood protection as B Area. The 105 Building will be located on higher ground than B Area and therefore, protection against possible flood damage is assured. This report is divided into the following sections: (1) general description of project; (2) addition to existing river pump house; (3) raw water lines from 181-B addition to 183-C lead house; (4) the 183-C filter plant; (5) 190-C process pump house; (6) power house addition; (7) high tanks; (8) retention basins; (9) outside streamlines; (10) primary substation; (11) outside underground lines; (12) outside electric lines; (13) roads, railroads, walks, fences; (14) structural design of all buildings; and (15) architectural design of all buildings.
Date:
March 29, 1951
Creator:
Colburn, R. T.
System:
The UNT Digital Library
Sound from a two-blade propeller at supersonic tip speeds
Report presents the results of sound measurements at static conditions made for a two-blade 47-inch-diameter propeller in the tip Mach number range 0.75 to 1.30. For comparison, spectrums have been obtained at both subsonic and supersonic tip speeds. In addition, the measured data are compared with calculations by the theory of Gutin which has previously been found adequate for predicting the sound at subsonic tip speeds. Curves are presented from which the maximum over-all noise levels in free space may be estimated if the power, tip Mach number, and distance are known.
Date:
March 29, 1951
Creator:
Hubbard, Harvey H. & Lassiter, Leslie W.
System:
The UNT Digital Library
Survey of required equipment charges for RMA and RMB lines, 234-5 Building, incurred by model changes
None
Date:
March 29, 1951
Creator:
unknown
System:
The UNT Digital Library
Appendix to HDC 2118 design criteria 100-X reactor water plant, general description - section II
The factors responsible for the advances of 100-X compared with the older areas are: Simplification of the process, such as elimination of separate process water clearwells, by having the filtered water reservoirs perform that function. Combination of separate buildings into one building, such as combining filter pump house and process pump house. Use of electric standby. Use of higher capacity pumps and filter basins, and so fewer number of units. Centralization of control and operation. More compact arrangement of plant components. Use of waste heat for space heating, recovered from reactor effluent, backed up by steam plant.
Date:
March 29, 1952
Creator:
unknown
System:
The UNT Digital Library
Aerodynamic characteristics at transonic and supersonic speeds of a rocket-propelled airplane configuration having a 52.5 degree delta wing and a low, swept horizontal tail
Report presenting a flight investigation over a range of Mach numbers to determine the aerodynamic characteristics at low lift of a rocket model of an airplane with a 52.5 degree delta wing of aspect ratio 3.08 and NACA 65A003 airfoil sections in the streamwise direction and a low, swept horizontal tail. Results regarding the longitudinal trim, lift, drag, longitudinal static stability, damping in pitch, and directional static stability are provided.
Date:
March 29, 1954
Creator:
Kehlet, Alan B.
System:
The UNT Digital Library
Chordwise pressures and section moment force and moment coefficients at high subsonic speeds near midspan of a tapered 35 degree sweptback wing with a flap-type control and an attached tab
Report presenting an investigation in the high-speed tunnel to determine the effects on the chordwise pressure and section force and moment coefficients near midspan of deflecting a flap-type control with an attached tab on a swept wing. The semispan 35 degree sweptback wing had an NACA 65A006 airfoil section, an aspect ratio of 4, and a taper ratio of 0.6.
Date:
March 29, 1954
Creator:
Hammond, Alexander D. & Keffer, Barbara M.
System:
The UNT Digital Library
Diffraction Studies of Possible Ordering in α-brass
Recently, there has been some evidence to point to possible ordering in the α-brasses. Masumoto et al. have concluded from their specific heat measurements that there is a possibility of ordering in the α-brasses. In particular they observed an anomaly in the specific heat curves for the α-brasses for the temperature range from 200 to 260°C and explained these results upon the basis of a change in local or short range order in α-brasses at these temperatures. In connection with the study of radiation damage effects in α-brass ordering has been suspected. Rosenblatt has annealed 70-30 α-brass previously annealed at 350°C and cooled to room temperature at 190°C for six weeks. He observed a decrease of .90 ± .03% in the electrical resistivity of α-brass measured at -196°C after the anneal at 190°C.
Date:
March 29, 1954
Creator:
Keating, David, T.
System:
The UNT Digital Library
Drag and longitudinal trim characteristics of a low-tail version of the North American YF-100A airplane as determined from the flight test at low lift of a 0.11-scale rocket-powered model at Mach numbers between 0.75 and 1.78
Report presenting drag and longitudinal trim characteristics at low lift of a low-tail version of the North American YF-100A airplane as obtained from the flight test of a 0.11-scale rocket model at a range of Mach numbers. Longitudinal stability data and some qualitative damping-in-pitch data are also provided.
Date:
March 29, 1954
Creator:
Blanchard, Willard S., Jr.
System:
The UNT Digital Library
A Kinetic Study of the Oxidation of Sphalerite. Technical Report No. 10
None
Date:
March 29, 1954
Creator:
Ong, John N., Jr.; Wadsworth, Milton E. & Fassell, W. Martin, Jr.
System:
The UNT Digital Library
MEETING XIV -- BEVATRON RESEARCH CONFERENCE -- CHEMISTRY EXPERIMENTS
The main purpose of Chemistry Division personnel in using the Bevatron will be to learn as much as possible about nuclear reactions in the Bev energy range using the radiochemical approach. The type and extent of these experiments will depend greatly on the beam intensity. Significant results can be obtained at 10{sup 6} or 10{sup 7} protons per pulse, but it is highly desirable that this figure ultimately be raised to 10{sup 10} or greater.
Date:
March 29, 1954
Creator:
Hyde, Earl K.
System:
The UNT Digital Library
Rocket-Model Investigation of the Longitudinal Stability, Drag, and Duct Performance of a 60 Degree Delta-Wing Canard Aircraft With Twin Side Inlets at Mach Numbers From 0.80 to 1.70
Report discussing a flight test on a rocket-boosted canard aircraft with 60 degree delta lifting surfaces, twin normal-shock-type side inlets, and twin vertical tails. The drag, longitudinal stability, and duct performance data were obtained for a range of Mach and Reynolds numbers.
Date:
March 29, 1954
Creator:
Bond, Aleck C. & Swanson, Andrew G.
System:
The UNT Digital Library