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Fish as food.

Description: Describes the composition, cost, and nutritive value of fish and other seafoods. Includes sample menus. Discusses methods of preparing seafood for market.
Date: April 6, 1907
Creator: United States. Department of Agriculture.
Item Type: Refine your search to only Book

An die deutschen frauen!

Description: Instructions to the women of Germany, urging them to provide assistance and support in the war effort. Text is in a medieval-style font.
Date: August 6, 1914
Creator: Auguste Viktoria, Empress, consort of William II, German Emperor, 1858-1921.
Item Type: Refine your search to only Poster
open access

Strength of Welded Joints in Tubular Members for Aircraft

Description: "The object of this investigation is to make available to the aircraft industry authoritative information on the strength, weight, and cost of a number of types of welded joints. This information will, also, assist the aeronautics branch in its work of licensing planes by providing data from which the strength of a given joint may be estimated. As very little material on the strength of aircraft welds has been published, it is believed that such tests made by a disinterested governmental labora… more
Date: February 6, 1930
Creator: Whittemore, H. L. & Brueggeman, W. C.
Item Type: Refine your search to only Report
open access

Hydraulics of Fuel-Injection Pumps for Compression-Ignition Engines

Description: "Formulas are derived for computing the instantaneous pressures delivered by a fuel pump. The first derivation considers the compressibility of the fuel and the second, the compressibility, elasticity, and inertia of the fuel. The second derivation follows that given by Sass; it is shown to be the more accurate of the two. Additional formulas are given for determining the resistance losses in the injection tube" (p. 621).
Date: March 6, 1931
Creator: Rothrock, A. M.
Item Type: Refine your search to only Report
open access

Zinc and Its Alloys

Description: Report issued by the Bureau of Standards discussing world production of zinc and zinc alloys. History, metallurgy, and structural properties of zinc are presented. This report includes tables, illustrations, and photographs.
Date: November 6, 1931
Creator: United States. Bureau of Standards.
Item Type: Refine your search to only Report
open access

The Mechanism of Atomization Accompanying Solid Injection

Description: "A brief historical and descriptive account of solid injection is followed by a detailed review of the available theoretical and experimental data that seem to throw light on the mechanism of this form of atomization. It is concluded that this evidence indicates that (1) the atomization accompanying solid injection occurs at the surface of the liquid after it issues as a solid stream from the orifice; and (2) that such atomization has a mechanism physically identical with the atomization which … more
Date: January 6, 1932
Creator: Castleman, R. A., Jr.
Item Type: Refine your search to only Report
open access

Force measurements on a 1/40-scale model of the U. S. Airship "Akron"

Description: This report describes a series of tests made on a 1/40-scale model of the U. S. Airship "Akron" (ZRS-4) for the purpose of determining the drag, lift, and pitching moments of the bare hull and of the hull equipped with two different sets of fins. Measurements were also made of the elevator forces and hinge moments.
Date: May 6, 1932
Creator: Freeman, Hugh B.
Item Type: Refine your search to only Report
open access

A photographic study of combustion and knock in a spark-ignition engine

Description: Report presents the results of a photographic study of the combustion in a spark-ignition engine using both Schlieren and flame photographs taken at high rates of speed. Although shock waves are present after knock occurs, there was no evidence of any type of sonic or supersonic compression waves existing in the combustion gases prior to the occurrence of knock. Artificially induced shock waves in the engine did not in themselves cause knock.
Date: December 6, 1937
Creator: Rothrock, A. M. & Spencer, R. C.
Item Type: Refine your search to only Report
open access

The Compressibility Burble and the Effect of Compressibility on Pressures and Forces Acting on an Airfoil

Description: "Simultaneous air-flow photographs and pressure-distribution measurements were made of the NACA 4412 airfoil at high speeds to determine the physical nature of the compressibility burble. The tests were conducted in the NACA 24-inch high-speed wind tunnel. The flow photographs were obtained by the Schlieren method and the pressures were simultaneously measured for 54 stations in the 5-inch-chord airfoil by means of a multiple-tube manometer. Following the general program, a few measurements of … more
Date: July 6, 1938
Creator: Stack, John; Lindsey, W. F. & Littell, Robert E.
Item Type: Refine your search to only Report
open access

Air Flow in the Boundary Layer of an Elliptic Cylinder

Description: From Introduction: "The present investigation was carried out for the purpose of supplementing the earlier work with information on the boundary layer under such conditions of air speed and turbulence that transition occurs and the layer is partly laminar and partly turbulent. In the work reported in reference 1, the air speed was about 12 feet per second, and it was assumed that the boundary layer remained in the laminar condition until after separation because the separation point remained fi… more
Date: August 6, 1938
Creator: Schubauer, G. B.
Item Type: Refine your search to only Report
open access

Determination of the Profile Drag of an Airplane Wing in Flight at High Reynolds Numbers

Description: "Flight tests were made to determine the profile-drag coefficients of a portion of the original wing surface of an all-metal airplane and of a portion of the wing made aerodynamically smooth and more nearly fair than the original section. The wing section was approximately the NACA 2414.5. The tests were carried out over a range of airplane speeds giving a maximum Reynolds number of 15,000,000. Tests were also carried out to locate the point of transition from laminar to turbulent boundary laye… more
Date: January 6, 1939
Creator: Bicknell, Joseph
Item Type: Refine your search to only Report

Newsmap. Monday, July 6, 1942 : week of June 26 to July 2

Description: Front: Text describes action on various war fronts including Midway, Western Europe, Russia, Egypt, Southwest Pacific, Mediterranean, China, and Jugoslavia. Large world map is keyed to text and illustrates time zones around the world. Includes two inset maps: "Rommel drives east for Suez"; Nazi-Russian battles near Kursk. Photographs: Saboteurs' weapons, Port of embarkation, Allied leaders in the Middle East [Major Gen. Russell L. Maxwell, General Sir Claude Auchinleck], Armoured observa… more
Date: July 6, 1942
Creator: [United States]. Army Orientation Course.
Item Type: Refine your search to only Poster

Newsmap. Monday, September 6, 1943 : week of August 26 to September 2, 208th week of the war, 90th week of U.S. participation

Description: Front: Text describes action on various war fronts: Germany, Russia, Italy, Denmark, Sweden, New Georgia, New Guinea, Marcus Island. Maps show air offensive in western Europe, New Georgia Is., Russian front. Includes photographs: Army Air Forces report on Warnemunde; Tough customer [Gourmiers, Berber fighting men]; The first wave [Yanks at Rendova I.]. Back: Typical German infantry division. Illustration of a division with descriptive text keyed to the illustration. Regiments described inclu… more
Date: September 6, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
open access

The Diffusion Length and the Utilization of Thermal Neutrons in a Heterogeneous Pile

Description: Abstract: "An accurate calculation is given for the quantity which corresponds to the diffusion length in the theory of the pile. The procedure is to establish a relationship between the diffusion length and the change in thermal utilization from a pile with infinite sides to one with sides of a finite length. The calculation of this change in the thermal utilization is then carried through. Approximation to the answer and numerically exact calculations are given in the report. The results show… more
Date: October 6, 1943
Creator: Plass, Gilbert N.
Item Type: Refine your search to only Report

Newsmap. Monday, December 6, 1943 : week of November 25 to December 2, 221st week of the war, 103rd week of U.S. participation

Description: Text describes action on various war fronts: Italy, USSR, Germany, Central Pacific, Southwest Pacific, China, Plans. Inset maps: central Italy, northeast New Guinea, Action areas in central and southwest Pacific, Truk Is., Nauru, Wotje, Jaluit, Makin, Tarawa. Photographs: Australian Air Force Beaufighter, Sgt. Ben Kuroki of Hershey, Nebraska, Captured Soviet equipment, Rescued blindfolded Nazi. German built road in Isernia. Back: Text and 11 illustrations highlight the 11 general orders tha… more
Date: December 6, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
open access

Scouting, patrolling, and sniping.

Description: Discusses the relationship between Army scouts and their commanders, and the implementation of successful combat plans. Also discusses the role of snipers in disrupting the enemy's operations.
Date: February 6, 1944
Creator: United States. War Department.
Item Type: Refine your search to only Book
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