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Office of Scientific & Technical Information Technical Reports
221
Congressional Research Service Reports
143
Texas Patents
55
Texas Attorney General Opinions
38
Technical Report Archive and Image Library
27
National Advisory Committee for Aeronautics Collection
16
Government Accountability Office Reports
10
Texas Register
10
Texas Laws and Resolutions Archive
9
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Planter.
Patent for a new and improved planter. This design consists in "[t]he combination . . . of the oscillating hopper having the opening in its lower side, the slides on the bottom of the hopper, having the slots, the set-screws engaging said slots and securing the slides in place, the seed-slide guided between the opposing edges of the slides, and the operating-lever pivoted on one of the screws and engaging the seed-slide" (lines 62-70).
Date:
February 5, 1889
Creator:
Ballard, Johnathan J.
Object Type:
Patent
System:
The Portal to Texas History
Poultry Coop.
Patent for a new and improved poultry coop. This design's "interior . . . has a vertical central partition between which and the ends of the coop are vertical transverse partitions and vertical longitudinal partitions, which preferably consist of strips . . . forming compartments, each of a sufficient size to contain a given number of a given kind of poultry . . . as the coop is divided off into compartments the poultry can with great ease be examined as to condition, and not being in large mass, but being separated into small numbers, they are kept in a better state of preservation and health" (lines 25-44).
Date:
February 5, 1884
Creator:
Bleike, William T., Jr.
Object Type:
Patent
System:
The Portal to Texas History
Match-Box.
Patent for a match-box that prevents "the wholesale removal therefrom of large numbers of matches by users and borrowers and their consequent wasteful expenditure, which, when this happens, as it commonly does in hotels and stores, makes the cost of matches an item of considerable expense to the proprietor" (lines 14-20).
Date:
February 5, 1895
Creator:
Holm, Martin
Object Type:
Patent
System:
The Portal to Texas History
Motor.
Patent for a new and improved motor. This design consists "[i]n a fan motor, the V-shaped frame, the shafts journaled in the upper corners thereof, the ratchet-wheels and spur-wheels secured to said shafts, the spring-actuated pawls pivoted to the frame and engaging the ratchet-wheels, sleeves loose on shafts, and having the spur-wheels fast to said sleeves, the volute springs with their inner ends fast to shafts and their outer ends fast to wheels, the winding-shafts having the pinions engaging wheels, the shaft between [the other] shafts having the pinion, engaging wheels" (lines 19-30).
Date:
February 5, 1889
Creator:
Heinsohn, Ernst Theodor & Hoffmann, John
Object Type:
Patent
System:
The Portal to Texas History
Texas Register, Volume 18, Number 10, Pages 721-776, February [5], 1993
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
February 5, 1993
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Federal Register, Volume 75, Number 24, February 5, 2010, Pages 5877-6088
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
February 5, 2010
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Lift, drag, and pitching moment of low-aspect-ratio wings at subsonic and supersonic speeds : triangular wing of aspect ratio 2 with NACA 0005-63 thickness distribution, cambered and twisted for a trapezoidal span load distribution
Report presenting a wing-body combination with a plane triangular wing of aspect ratio 2 with NACA 0005-63 thickness distribution in streamwise planes, which has been twisted and cambered for a trapezoidal span load distribution at subsonic and supersonic Mach numbers.
Date:
February 5, 1951
Creator:
Smith, Willard G. & Phelps, E. Ray
Object Type:
Report
System:
The UNT Digital Library
Experimental Pressure Distributions Over Two Wing-Body Combinations at Mach Number 1.9
Memorandum presenting pressure distributions on two wing-body combinations obtained at a Mach number of 1.9 to investigate the wing-body interference. A rectangular wing, a triangular wing, and a cylindrical body with an ogive nose were studied alone and in combination. The pressure distributions over the wing-body combination compared favorably with theoretical calculations based primarily on a generalization of the method of Nielsen and Matteson, except at the root section of the wings where the boundary layer of the body modified the flow.
Date:
February 5, 1951
Creator:
Moskowitz, Barry & Maslen, Stephen H.
Object Type:
Report
System:
The UNT Digital Library
High-Speed Load Distribution of the Wing of a 3/16-Scale Model of the Douglas XSB2D-1 Airplane with Flaps Deflected
"The tests reported herein were made for the purpose of determining the high-speed load distribution on the wing of a 3/16 scale model of the Douglas XSB2D-1 airplane. Comparisons are made between the root bending moment and section torsional moment coefficients as obtained experimentally and derived analytically. The results show good correlation for the bending moment coefficients but considerable disagreement for the torsional moment coefficients, the measured moments being greater than the analytical moments. The effects of Mach number on both the bending moment and torsional moment coefficients were small" (p. 1).
Date:
February 5, 1947
Creator:
Barnes, Robert H.
Object Type:
Report
System:
The UNT Digital Library
Lift, Drag, and Pitching Moment of Low-Aspect-Ratio Wings at Subsonic and Supersonic Speeds: Triangular Wing of Aspect Ratio 2 with NACA 0005-63 Thickness Distribution, Cambered and Twisted for a Trapezoidal Span Load Distribution
A wing-body combination having a plane triangular wing of aspect ratio 2 with NACA 0005-63 thickness distribution in streamwise planes, and twisted and cambered for a trapezoidal span load distribution has been investigated at both subsonic and supersonic Mach numbers. The lift, drag, and pitching moment of the model are presented for Mach numbers from 0.60 to 0.90 and 1.30 to 1.70 at a Reynolds number of 3.0 million. The variations of the characteristics with Reynolds number are also shown for several Mach numbers.
Date:
February 5, 1951
Creator:
Smith, Willard G. & Phelps, E. Ray
Object Type:
Report
System:
The UNT Digital Library
Altitude performance of annular combustor type turbojet engine with JFC-2 fuel
An investigation was made comparing the performance of JFC-2 fuel and unleaded, clear gasoline in a 3000-pound-thrust turbojet engine. The JFC-2 fuel was a blend of percent diesel fuel and 25 percent aviation gasoline. Engine combustion efficiency was equal to that obtained with gasoline at rated engine speed and altitudes up to 35,000 feet, but at lower engine speeds or at higher altitudes the JFC-2 fuel gave lower combustion efficiency. No discernible difference was obtained in starting or low-speed combustiion blow-out characteristics of the two fuels. Turbine-discharge radial temperature profiles were nearly the same at altitudes up to 35,000 feet.
Date:
February 5, 1952
Creator:
Useller, James W.; Harp, James L., Jr. & Barson, Zelmar
Object Type:
Report
System:
The UNT Digital Library
Preliminary investigation of performance of variable-throat extended-plug-type nozzles over wide range of nozzle pressure ratios
From Summary: "As part of an overall program for the experimental investigation of large-scale jet nozzles, a preliminary evaluation of the internal performance characteristics of several variable-throat extended-plug-type nozzles was obtained over a range of nozzle pressure rations from 2 to 15 with nozzle throat variations as great as 2:1. The extended-plug nozzle attained peak thrust coefficients as high as those which have been attained with fixed-geometry convergent-divergent nozzles. The thrust coefficients of the extended-plug nozzles were relatively insensitive to both nozzle pressure ratio and throat area over the range investigated."
Date:
February 5, 1954
Creator:
Ciepluch, Carl C.; Krull, H. George & Steffen, Fred W.
Object Type:
Report
System:
The UNT Digital Library
Loitering and range performance of turbojet-powered aircraft determined by off-design engine cycle analysis
From Summary: "The loitering and range performance of airplanes equipped with several different turbojet engines was analytically investigated by applying the results of off-design cycle analyses to specific airplane characteristics. The method of off-design cycle analysis is presented herein and is verified by a check with experimental data. For all engines considered, the loitering and the range fuel flows obtained with rated tail-pipe nozzle area, variable engine speed operations were within 2 or 3 percent of the optimum fuel flow obtainable with any method of engines operation. The optimum loitering altitude generally occurred between approximately 25,000 and 35,000 feet with corresponding optimum flight Mach numbers of 0.4 to 0.65. In general, the optimum range fuel flows occurred at 3000 to 5000 feet higher altitude and at approximately 0.15 higher flight Mach numbers than the optimum loitering fuel flow."
Date:
February 5, 1952
Creator:
Koutz, Stanley L. & Hensley, Reece V.
Object Type:
Report
System:
The UNT Digital Library
Explosion and Combustion Properties of Alkylsilanes 1: Temperature-Composition Limits of Explosion for Methyl-,Dimethyl-,Trimethyl-,Tetramethyl-,and Vinylsilane at Atmospheric Pressure
"The explosion limits of five alkylsilanes were determined as a function of temperature and composition at a pressure of 1 atmosphere. Over a fuel concentration range of 2 to 10 percent, the lowest temperatures (zero C) below which explosion did not occur for the five fuels studied were: tetramethylsilane (CHsub3)sub4Si, 450 degrees; trimethlysilane (CHsub3)sub3SiH, 310 degrees;dimethylsilane (CHsub3)sub2SiHsub2, 220 degrees; methylsilane CHsub3SiHsub3, 130 degrees; and vinylsilane Hsub2C=CH-SiHsub3, 90 degrees. Explosion limits for hydrocarbons analogous to these silanes fall in a temperature range of 500 degrees to 600 degrees C" (p. 1).
Date:
February 5, 1954
Creator:
Schalla, Rose L. & McDonald, Glen E.
Object Type:
Report
System:
The UNT Digital Library
Transonic Drag Measurements of Eight Body-Nose Shapes
Report presenting zero-lift drag data obtained on a series of eight fin-stabilized bodies with noses of fineness ratio 3 and differing nose shape by launching them from a helium gun. The nose shapes explored included a cone, x exp(3/4), x exp(1/2), parabolic, (3/4)P, (1/2)P, L-V Haack, and Von Karman. The results are compared with theoretical calculations and wind-tunnel measurements.
Date:
February 5, 1954
Creator:
Stoney, William E., Jr.
Object Type:
Report
System:
The UNT Digital Library
Effects of a Series of Inboard Plan-Form Modifications on the Longitudinal Characteristics of Two Unswept Wings of Aspect Ratio 3.5, Taper Ratio 0.2, and Different Thickness Distributions at Mach Numbers of 1.61 and 2.01
Report of an investigation to determine the effects of inboard plan-form modifications on two unswept wings at Mach numbers 1.61 and 2.01. The only difference between the two wings was the spanwise thickness distribution. The modifications were performed by means of inserting sections that linearly extended the local chord from the 40 percent semispan station to the model center line.
Date:
February 5, 1954
Creator:
Sevier, John R., Jr.
Object Type:
Report
System:
The UNT Digital Library
Experimental investigation of the effect of fuel-injection-system design variables on afterburner performance
Report presenting an investigation on a full-scale afterburner test rig and two turbojet-engine afterburner configurations to determine criteria for the design of fuel systems for afterburners. The effect of fuel-air ratio distributions at the flame holder on combustion performance was obtained along with the effects of variation in design variables on the ratio distributions.
Date:
February 5, 1954
Creator:
Jansen, Emmert T.; Velie, Wallace W. & Wilsted, H. Dean
Object Type:
Report
System:
The UNT Digital Library
Effect of Water on Carbon Monoxide-Oxygen Flame Velocity
"The flame velocities were measured of 20 percent oxygen and 80 percent carbon monoxide mixtures containing either light water or heavy water. The flame velocity increased from 34.5 centimeters per second with no added water to about 104 centimeters per second for a 1.8 percent addition of light water and to 84 centimeters per second for an equal addition of heavy water. The addition of heavy water caused greater increases in flame velocity with equilibrium hydrogen-atom concentration than would be predicted by the Tanford and Pease square-root relation" (p. 1).
Date:
February 5, 1954
Creator:
McDonald, Glen E.
Object Type:
Report
System:
The UNT Digital Library
Vapor pressures and calculated heats of vaporization of concentrated nitric acid solutions in the composition range 71 to 89 percent nitrogen dioxide, 1 to 10 percent water, and in the temperature range 10 to 60 degrees C
From Summary: "Total vapor pressures were measured for 16 acid mixtures of the ternary system nitric acid, nitrogen dioxide, and water within the temperature range 10 degrees to 60 degrees Celsius, and with the composition range 71 to 89 weight percent nitric acid, 7 to 20 weight percent nitrogen dioxide, and 1 to 10 weight percent water. Heats of vaporization were calculated from the vapor pressure measurements for each sample for the temperatures 25, 40, and 60 degrees Celsius. The ullage of the apparatus used for the measurements was 0.46. Ternary diagrams showing isobars as a function of composition of the system were constructed from experimental and interpolated data for the temperatures 25, 40, 45, and 60 degrees C and are presented herein."
Date:
February 5, 1954
Creator:
McKeown, A. B. & Belles, Frank E.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Ejection Release Characteristics of Bluff TX-28 and Turnabout TX-28 Stores From a 1/17-Scale Simulated Bomb Bay of the Republic F-105 Airplane at Mach Numbers of 1.39 and 1.98 : Coord. No. AF-222
Memorandum presenting a study of two bluff modifications of the TX-28 store in the 27- by 27-inch preflight jet of the Langley Pilotless Aircraft Research Station. Successful releases were made with both stores at near-sea-level conditions with high ejection velocities. Results regarding the Bluff TX-28 and Turnabout TX-28 are provided.
Date:
February 5, 1957
Creator:
Lee, John B.
Object Type:
Report
System:
The UNT Digital Library
Reduction of hinge moments of airplane control surfaces by tabs
This report presents the results of an investigation conducted in the NACA 7 by 10-foot wind tunnel of control surfaces equipped with tabs for reducing the control forces or trimming the aircraft. Two sizes of ordinary ailerons with several sizes of attached and inset tabs were tested on a Clark y wing. Tabs were also tested in combination with auxiliary balances of the horn and paddle types, and with a frise balance aileron.
Date:
February 5, 1935
Creator:
Harris, Thomas A.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Research Comparing Lateral Control Devices, Particularly at High Angles of Attack 3: Ordinary Ailerons Rigged Up 10 Degrees When Neutral
This report presents the results of wind-tunnel tests made on three model wings having different sizes of ordinary ailerons rigged up 10 degrees when neutral, the same models having previously been tested with the ailerons rigged even with the wings in the usual manner. One of the wings had ailerons of medium size, 25 per cent of the wing chord by 40 per cent of the semispan, one had long, narrow ailerons, and one had short, wide ones. These tests are part of a general investigation on lateral control devices, with particular reference to the control at high angles of attack, in which all the devices are being subjected to the same series of tests in the 7 by 10 foot wind tunnel of the National Advisory Committee for Aeronautics.
Date:
February 5, 1932
Creator:
Weick, Fred E. & Wenzinger, Carl J.
Object Type:
Report
System:
The UNT Digital Library
Texas Register, Volume 16, Number 9, Pages 611-688, February 5, 1991
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
February 5, 1991
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Register, Volume 13, Number 10, Pages 569-659, February 5, 1988
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
February 5, 1988
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History