Cooperative Marketing of Fleece Wool (open access)

Cooperative Marketing of Fleece Wool

Bulletin discussing about the marketing style fleece wool in United States which is almost 30% of wool produced in U.S.A
Date: May 1939
Creator: Coon James M.
Object Type: Book
System: The UNT Digital Library
Cooperative Marketing of Livestock at Cincinnati (open access)

Cooperative Marketing of Livestock at Cincinnati

Bulletin discussing the marketing model implemented by Producers Cooperative Commission Association at Cincinnati developed around the needs of livestock producers.
Date: May 1939
Creator: Hulbert H.H.
Object Type: Book
System: The UNT Digital Library
The Drag of Airplane Radiators With Special Reference to Air Heating (Comparison of Theory and Experiment) (open access)

The Drag of Airplane Radiators With Special Reference to Air Heating (Comparison of Theory and Experiment)

This report contains a survey of past radiator research. This report also is intended as a systematic comparison of theoretical and experimental radiator drag, with the object of ascertaining the most important loss sources and their interaction in different cases of installation, and to separate the radiator systems which are amenable to calculation, both as regards axial flow and drag. The sources of loss due to the diffuser are to be looked into closely as in many cases they can be of preeminent magnitude and their customary appraisal, according to Fliegner's formula, does not meet actual conditions.
Date: May 1939
Creator: Göthert, B.
Object Type: Report
System: The UNT Digital Library
An Experimental Investigation of the Normal Acceleration of an Airplane Model in a Gust (open access)

An Experimental Investigation of the Normal Acceleration of an Airplane Model in a Gust

Note presenting an investigation in the gust tunnel to determine the influence of airplane wing loading, forward velocity, wing plan form, and the fuselage on the reaction of the airplane to a known gust. Tests were made for four values of gust velocity and for two gust gradients, specifically the sharp-edge gust and a gust rising linearly to full strength in a distance of several chord lengths.
Date: May 1939
Creator: Donely, Philip
Object Type: Report
System: The UNT Digital Library
Experiments on the Recovery of Waste Heat in Cooling Ducts, Special Report (open access)

Experiments on the Recovery of Waste Heat in Cooling Ducts, Special Report

Tests have been conducted in the N.A.C.A. full-scale wind tunnel to investigate the partial recovery of the heat energy which is apparently wasted in the cooling of aircraft engines. The results indicate that if the radiator is located in an expanded duct, a part of the energy lost in cooling is recovered; however, the energy recovery is not of practical importance up to airplane speeds of 400 miles per hour. Throttling of the duct flow occurs with heated radiators and must be considered in designing the duct outlets from data obtained with cold radiators in the ducts.
Date: May 1939
Creator: Silverstein, Abe
Object Type: Report
System: The UNT Digital Library
Greenhouse tomatoes. (open access)

Greenhouse tomatoes.

Describes the benefits of growing tomatoes in greenhouses for improved quality and marketability. Discusses requirements and methods for successfully growing greenhouse tomatoes.
Date: May 1939
Creator: Beattie, James H. (James Herbert), b. 1882
Object Type: Book
System: The UNT Digital Library
Livestock Auction Sales in the United States (open access)

Livestock Auction Sales in the United States

Bulletin discussing how the auction of livestock happened in U.S.A from 1886.
Date: May 1939
Creator: Randell C.G. & Man L.B
Object Type: Book
System: The UNT Digital Library
Monthly Report of the Attorney General of the State of Texas, Volume 1, Number 3, April 1939 (open access)

Monthly Report of the Attorney General of the State of Texas, Volume 1, Number 3, April 1939

Monthly report documenting orders, opinions, and other legal statements issued by the Office of the Attorney General in Texas.
Date: May 1939
Creator: Texas. Attorney-General's Office.
Object Type: Report
System: The Portal to Texas History
The Power of Aircraft Engines at Altitude (open access)

The Power of Aircraft Engines at Altitude

The subject of the present paper is confined to the investigations and methods employed by the Fiat company in their studies on the altitude performance of an air-cooled engine of the production type. The experimental set-up as well as test engine data are provided.
Date: May 1939
Creator: Ragazzi, Paolo
Object Type: Report
System: The UNT Digital Library
Radiator Design and Installation (open access)

Radiator Design and Installation

"The fundamental principles of fluid flow, pressure losses, and heat transfer have been presented and analyzed for the case of a smooth tube with fully developed turbulent flow. These equations apply to tubes with large length-diameter ratios where the flow is at a high Reynolds Number. The error introduced by using these equations increases as the magnitude of the tube length and the air-flow Reynolds Number approaches the values encountered in modern radiator designs" (p. 1).
Date: May 1939
Creator: Brevoort, M. J. & Leifer, M.
Object Type: Report
System: The UNT Digital Library
A semi-graphical method for analyzing strains measured on three or four gage lines intersecting at 45 degrees (open access)

A semi-graphical method for analyzing strains measured on three or four gage lines intersecting at 45 degrees

Report presenting a method for analyzing strains measured on three or four gage lines intersecting at 45 degrees, which helps determine the state of stress at a point on a plane. An equation for adjustment factor and a master curve is provided, which can be memorized and easily used in the future.
Date: May 1939
Creator: Hill, H. N.
Object Type: Report
System: The UNT Digital Library
A simplified method for the calculation of airfoil pressure distribution (open access)

A simplified method for the calculation of airfoil pressure distribution

From Summary: "A method is presented for the rapid calculation of the pressure distribution over an airfoil section when the normal-force distribution and the pressure distribution over the "base profile" (i.e., the profile of the same airfoil were the camber line straight and the resulting airfoil at zero angle of attack) are known. This note is intended as a supplement to N.A.C.A. Report Nos. 631 and 634 wherein methods are presented for the calculation of the normal-force distribution over plain and flapped airfoils, respectively, but not of the pressures on the individual surfaces. Base-profile pressure-coefficient distributions for the usual N.A.C.A. family of airfoils, which are also suitable for several other commonly employed airfoils, are included in tabular form. With these tabulated base-profile pressures and the computed normal-force distributions, pressure distributions adequate for most engineering purposes can be obtained."
Date: May 1939
Creator: Allen, H. Julian
Object Type: Report
System: The UNT Digital Library
Some Notes on the Numerical Solution of Shear-Lag and Mathematically Related Problemsq (open access)

Some Notes on the Numerical Solution of Shear-Lag and Mathematically Related Problemsq

"The analysis of box beams with shear deformation of the flanges can be reduced to the solution of a differential equation. The same equation is met in other problems of stress analysis. No analytical solutions of this equation can be given for practical cases, and numerical methods of evaluation must be used. Available methods are briefly discussed. Two numerical examples show the application of the step-by-step method of integration to shear-lag problems" (p. 1).
Date: May 1939
Creator: Kuhn, Paul
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: O-635 (open access)

Texas Attorney General Opinion: O-635

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: What are the proper charged to be allowed to the constable for mileage under the facts set forth?
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-652 (open access)

Texas Attorney General Opinion: O-652

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: Construction of Article 6675a-2
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-664 (open access)

Texas Attorney General Opinion: O-664

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;Time for filing field notes of land purchased by occupants under section 8,1931 Sales Act.
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-689 (open access)

Texas Attorney General Opinion: O-689

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; Insanity of prisoners as affectin commutation of death sentence.
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-695 (open access)

Texas Attorney General Opinion: O-695

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;Travelling expenses allowable to a County Attorney.
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-704 (open access)

Texas Attorney General Opinion: O-704

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: When examining trial accounts are presented to the county for payment by precinct officials compensated on a fee basis, from what fund should they be paid?
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-707 (open access)

Texas Attorney General Opinion: O-707

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; Question of county commissioner violating a Penal statute of the State of Texas when he uses county machinery for terracing farms without first getting approval of Commissioners' Court.
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-714 (open access)

Texas Attorney General Opinion: O-714

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; Authority of Comptroller to issue warrant to pay funeral expenses of deceased janitor of State Senate.
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-718 (open access)

Texas Attorney General Opinion: O-718

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; Can the Commissioners' court employ an architect who is the son of the County Judge to supervise improvements to be made on the County Court House?
Date: May 1, 1939
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
The Way to Increased Airplane Engine Power (open access)

The Way to Increased Airplane Engine Power

The purpose of this paper is to give an outline of the present state of development and point out the possibilities available for the further increase in the power/displacement ratio, the economy, and the reliability of the engine. Some of the aspects discussed are methods of increasing take-off power, the various methods of preparation of the fuel mixture and their effect on power, economy, and safety.
Date: May 1939
Creator: Vohrer, Eugen
Object Type: Report
System: The UNT Digital Library
Wind-Tunnel Investigation of Ground Effect on Wings With Flaps (open access)

Wind-Tunnel Investigation of Ground Effect on Wings With Flaps

From Summary: "An investigation was conducted in the N.A.C.A. 7- by 10-foot wind tunnel to determine the effect of ground proximity on the aerodynamic characteristics of wings equipped with high-lift devices. A rectangular and a tapered wing were tested without flaps, with a split flap, and with a slotted flap. The ground was represented by a flat plate, completely spanning the tunnel and extending a considerable distance ahead and back of the model. The position of the plate was varied from one-half to three chord lengths below the wing. The results are presented in the form of curves of absolute coefficients, showing the effect of the ground on each wing arrangement."
Date: May 1939
Creator: Recant, Isidore G.
Object Type: Report
System: The UNT Digital Library