Collection
Technical Report Archive and Image Library
405
National Advisory Committee for Aeronautics Collection
337
Texas Attorney General Opinions
241
Office of Scientific & Technical Information Technical Reports
76
TRAIL Microcard Collection
49
World War Two Collection
20
World War Two Newsmaps
18
Government Documents A to Z Digitization Project
16
Texas State Publications
15
USDA Farmers' Bulletins
8
3 More
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777 Matching Results
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Square Plate With Clamped Edges Under Normal Pressure Producing Large Deflections
"A theoretical analysis is given for the stresses and deflections of a square plate with clamped edges under normal pressure producing large deflections. Values of the bending stress and membrane stress at the center of the plate and at the midpoint of the edge are given for center deflections up to 1.9 times the plate thickness. The shape of the deflected surface is given for low pressures and for the highest pressure considered" (p. 209).
Date:
May 24, 1941
Creator:
Levy, Samuel
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: O-3363
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Constitutionality of proposed “Citrus Marketing Act.”
Date:
May 26, 1941
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Bending of Rectangular Plates With Large Deflections
"The solution of Von Karman's fundamental equations for large deflections of plates is presented for the case of a simply supported rectangular plate under combined edge compression and lateral loading. Numerical solutions are given for square plates and for rectangular plates with a width-span ratio of 3:1. The effective widths under edge compression are compared with effective widths according to Von Karman, Bengston, Marguerre, and Cox and with experimental results by Ramberg, Mcpherson, and Levy" (p. 1).
Date:
May 27, 1941
Creator:
Levy, Samuel
Object Type:
Report
System:
The UNT Digital Library
The Conversion of UF4 to U3Os
Methods of conversion of UF4 to U3O8 by fusion with ammonium oxalate dihydrate and other salts are described.
Date:
May 28, 1941
Creator:
Tevebaugh, A. D.; Tevebaugh, R. D.; Cline, W. D. & Warf, James C.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: O-3510
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Will it be possible for the qualifying oaths of newly appointed notaries public to be taken prior to Jone 1st?
Date:
May 28, 1941
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: O-3632
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification;Duties and Compensation of independent school district tax assessor and collector.
Date:
May 28, 1941
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: O-3052
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Are the mentioned individuals in the employment of the Liquidating Division of the Board of Insurance Commissioners within the meaning of Article 5221b-17 (g)?
Date:
May 29, 1941
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: O-3491
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Whether or not a school trustee may contract or be employed by the school board.
Date:
May 31, 1941
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: O-3513
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification.
Date:
May 31, 1941
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Aircraft radio shop practice.
Discusses maintenance and repair of the component parts of aircraft radio equipment, and the correct use of tools.
Date:
May 1, 1942
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Bending of Rectangular Plates with Large Deflections
"The solution of von Karman's fundamental equations for large deflections of plates is presented for the case of a simply supported rectangular plate under combined edge compression and lateral loading. Numerical solutions are given for square plates and for rectangular plates with a width-span ratio of 3:1. The effective widths under edge compression are compared with effective widths according to von Karman, Bengston, Marguerre, and Cox and with experimental results by Ramberg, McPherson, and Levy" (p. 1).
Date:
May 1942
Creator:
Levy, Samuel
Object Type:
Report
System:
The UNT Digital Library
A Brief Study of the Speed Reduction of Overtaking Airplanes by Means of Air Brakes
"As an aid to airplane designers interested in providing pursuit airplanes with decelerating devices intended to increase the firing time when overtaking another airplane, formulas are given relating the pertinent distances and speeds in horizontal flight to the drag increase required. Charts are given for a representative parasite-drag coefficient from which the drag increase, the time gained, and the closing distance may be found. The charts are made up for three values of the ratio of the final speed of the pursuing airplane to the speed of the pursued airplane and for several values of the ratio of the speed of the pursued airplane to the initial speed of the pursuing airplane" (p. 1).
Date:
May 1942
Creator:
Pearson, H. A. & Anderson, R. F.
Object Type:
Report
System:
The UNT Digital Library
Care of damaged shade trees.
Discusses the important role shade trees play in camouflaging property. Explains the ways in which shade trees can become damaged and provides advice for repairing them in the event of damage.
Date:
May 1942
Creator:
United States. Department of Agriculture.
Object Type:
Book
System:
The UNT Digital Library
The Development of Satisfactory Flying Qualities on the Douglas Dive Bomber, Model SBD-1 Through Flight Testing Successive Modifications in Control-Surface Area, Hinge-Line Location, and Aerodynamic-Balance Nose Shape
Report presenting flight-test data contributing to the development of the present SBD-1 flying qualities based on the interest expressed in the methods used to obtain control-force characteristics on the Douglas Model SBD-1 by minor relocation of control-surface hinge line in combination with modifications in the aerodynamic balance nose shape. Results regarding the stalling characteristics, lateral-directional stability and control, longitudinal stability and control, and design recommendations are provided.
Date:
May 1942
Creator:
Root, L. E.
Object Type:
Report
System:
The UNT Digital Library
Effect of additions of aromatics on the knocking characteristics of several 100-octane fuels at two engine speeds
Report presenting testing at two engine speeds on six representative fuels rated at 100-octane number by the C.F.R. aviation method. Blends of the fuels with benzene, toluene, xylene, and isopropyl comprise nine other fuels, leading to testing on 15 fuels. Results regarding the tests at 2000 rpm and 250 degrees Fahrenheit inlet-air temperature, at 3100 rpm and 250 degrees Fahrenheit inlet-air temperature, 2000 rpm and 150 degrees Fahrenheit inlet-air temperature, and 3100 rpm and 150 degrees Fahrenheit inlet-air temperature, effect of speed on knock rating, effect of inlet-air temperature on knock rating, and effect of spark advance on knock rating are provided.
Date:
May 1942
Creator:
Biermann, Arnold E.; Corrington, Lester C. & Harries, Myron L.
Object Type:
Report
System:
The UNT Digital Library
Effect of inlet-air velocity distribution on the metering pressure of an injection-type aircraft carburetor
Report presenting tests of a three-barrel pressure carburetor to determine the effect of nonuniformity of the air flow in the intake duct on the metering of the carburetor. Measurements were made in the air side of the metering system and in the carburetor barrels for a variety of flow distributions. Results regarding the metering pressure, altitude compensation, effect of throttle on the metering characteristics, and flow of air around the bends are provided
Date:
May 1942
Creator:
Kinghorn, George F.
Object Type:
Report
System:
The UNT Digital Library
A flight investigation of internally balanced sealed ailerons in the presence of a balanced split flap
Report presenting flight tests made with a modified Ryan ST airplane to determine the effect on aileron characteristics of various arrangements of balanced split flaps covering that portion of the wing span occupied by the ailerons. With the flaps fully extended, the aileron effectiveness was reduced by approximately 18 percent of the effectiveness measured with ailerons alone.
Date:
May 1942
Creator:
Williams, W. C.
Object Type:
Report
System:
The UNT Digital Library
A flight investigation of short-period longitudinal oscillations of an airplane with free elevator
Report presenting a flight investigation to check the results of a theoretical analysis of longitudinal stability of an airplane with free controls. Tests used a Fairchild XR2K-1 airplane on which the weight moment and the aerodynamic balance of the elevator were varied to bring it into a condition where unstable short-period oscillations were encountered.
Date:
May 1942
Creator:
Phillips, William H.
Object Type:
Report
System:
The UNT Digital Library
Generalized selection charts for bombers with four 2000-horsepower engines
Report presenting a study of the performance of bombers powered by four 2000-horsepower engines supercharged to 25,000 feet. A series of charts is provided with the coordinates of power loading and wing loading in order to simplify the selection of the best airplane for a given purpose.
Date:
May 1942
Creator:
Brevoort, Maurice J.; Stickle, George W. & Hill, Paul R.
Object Type:
Report
System:
The UNT Digital Library
Ground Effect on Downwash Angles and Wake Location
"A theoretical study has been made of the reduction in downwash and upward displacement of the wake in the presence of the ground, and some verification of the theory has been obtained by means of air-flow measurements made with a ground-board and image-wing combination. Methods are given for estimating the effects and numerous examples are included to illustrate the nature of these effects and to show their order of magnitude" (p. 1).
Date:
May 1942
Creator:
Katzoff, S. & Sweberg, Harold H.
Object Type:
Report
System:
The UNT Digital Library
High-Speed Tests of a Ducted Body with Various Air-Outlet Openings
Test of a ducted body with Internal flow were made in the 8-foot high-speed wind tunnel for the purpose of studying the effects on external drag and an critical speed of the addition of efficient inlet and outlet openings to a basic streamline shape. Drag tests of a 13.6- inch-diameter streamline body of fineness ratio 6.14 were made at Mach numbers ranging from 0.20 to 0.75. The model was centrally mounted on a 9-percent-thick airfoil and was designed to have an efficient airfoil-body juncture and a high critical speed.
Date:
May 1942
Creator:
Becker, John V. & Baals, Donald D.
Object Type:
Report
System:
The UNT Digital Library
High-speed tests of radial-engine nacelles on a thick low-drag wing
Report presenting testing in the high-speed wind tunnel to determine the drag characteristics of several types of radial-engine nacelle on a low-drag airfoil. The drag coefficients of nacelles incorporating cowling-nose shapes shown by previous tests to be efficient and afterbodies of adequate length were about the same magnitude as commonly obtained for comparable installations on conventional wings. Results regarding the reduction of data, effect of nacelles on lift, and pressures at wing-nacelle juncture are provided.
Date:
May 1942
Creator:
Becker, John V.
Object Type:
Report
System:
The UNT Digital Library
The Influence of Bulkhead Spacing on Bending Stresses Due to Torsion
Report presenting the reasons for the existence of bending stresses due to torsion and the theoretical formulas applying to rectangular boxes with finite bulkhead spacing. Tests are described which were made to verify the theory, strains being measured on a rectangular torsion box with four bulkhead spacings. Results regarding normal stresses are provided.
Date:
May 1942
Creator:
Kuhn, Paul
Object Type:
Report
System:
The UNT Digital Library
Investigation of Lubricants Under Boundary Friction
Numerous observations of such lubrication processes within range of boundary friction on journal bearings and gear tooth profiles have strengthened the supposition that it should be possible to study the attendant phenomena with engineering methods and equipment. These considerations formed the basis of the present studies, which have led to the discovery of relations governing the suitability of bearing surfaces and the concept of "lubricating quality.".
Date:
May 1942
Creator:
Heidebroek, E. & Pietsch, E.
Object Type:
Report
System:
The UNT Digital Library