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Aerodynamic characteristics of a large number of airfoils tested in the variable-density wind tunnel

Description: From Summary: "The aerodynamic characteristics of a large number of miscellaneous airfoils tested in the variable-density tunnel have been reduced to a comparable form and are published in this report for convenient reference. Plots of the standard characteristics are given in tabular form. Included is a tabulation of important characteristics for the related airfoils reported in NACA report 460. This report, in conjunction with NACA report 610, makes available in comparable and convenient form… more
Date: 1938
Creator: Pinkerton, Robert M. & Greenberg, Harry
Item Type: Refine your search to only Report
open access

The aerodynamic characteristics of four full-scale propellers having different plan forms

Description: From Introduction: "Its main purpose is to present propeller data for four full-scale propellers of Navy design, three of which have somewhat unusual plan forms and the other one has a normal (usual present-day type) plan form. These data may give some clue as to what may be expected from fundamental changes in blade plan form."
Date: 1938~
Creator: Hartman, Edwin P. & Biermann, David
Item Type: Refine your search to only Report
open access

The Aerodynamic Characteristics of Full-Scale Propellers Having 2, 3, and 4 Blades of Clark Y and R.A.F. 6 Airfoil Sections

Description: "Aerodynamic tests were made of seven full-scale 10-foot-diameter propellers of recent design comprising three groups. The first group was composed of three propellers having Clark Y airfoil sections and the second group was composed of three propellers having R.A.F. 6 airfoil sections, the propellers of each group having 2, 3, and 4 blades. The third group was composed of two propellers, the 2-blade propeller taken from the second group and another propeller having the same airfoil section and… more
Date: 1938
Creator: Hartman, Edwin P. & Biermann, David
Item Type: Refine your search to only Report
open access

Airfoil section characteristics as applied to the prediction of air forces and their distribution on wings

Description: From Introduction: "The system presented herein yields, within the limitations of our present knowledge of aerodynamics, a general solution of the resultant wing forces and moments and their distribution. For the sake of completeness and facility in use, the report contains a table of the important section parameters for many commonly used sections and all other necessary data required to solve the most practical design problems coming within the scope of the system."
Date: 1938
Creator: Jacobs, Eastman N. & Rhode, R. V.
Item Type: Refine your search to only Report
open access

Breeds of dogs.

Description: Provides information to assist the reader in selecting dogs for breeding for various purposes. Includes only the "best known" breeds.
Date: 1938
Creator: Speelman, S. R. (Sanford Reed), 1894- & Williams, J. O. (John Oscar), 1885-
Item Type: Refine your search to only Book
open access

The Buckling of Curved Tension-Field Girders

Description: "The present paper reports on experiments made to determine the buckling load under shear of circular curved tension-field webs. The buckling load of the webs may be expressed with reference to the buckling load of the stiffeners. It is found that within the explored range the buckling load is approximately twice as great as that of the identically stiffened flat wall of equal web depth" (p. 1).
Date: January 1938
Creator: Limpert, G.
Item Type: Refine your search to only Report
open access

Calculation of the chordwise load distribution over airfoil sections with plain, split, or serially hinged trailing-edge flaps

Description: From Summary: "A method is presented for the rapid calculation of the incremental chordwise normal-force distribution over an airfoil section due to the deflection of a plain flap or tab, a split flap, or a serially hinged flap. This report is intended as a supplement to NACA Report no. 631, wherein a method is presented for the calculation of the chordwise normal-force distribution over an airfoil without a flap or, as it may be considered, an airfoil with flap (or flaps) neutral. The method e… more
Date: 1938
Creator: Allen, H. Julian
Item Type: Refine your search to only Report
open access

Carbonizing Properties of West Virginia Coals and Blends of Coals From the Alma, Cedar Grove, Dorothy Powellton A, Eagle, Pocahontas and Beckley Beds

Description: From Introduction: "The composition and carbonizing properties of 33 coals previously tested have been given in technical papers of the Bureau of Mines and in short reports published for the most part in the Proceedings of the American Gas Association. A complete list of publications on the work previous to 1937 is appended to this report. The present report gives the composition and carbonizing properties of seven additional coals from West Virginia. The data include results of blending test i… more
Date: 1938
Creator: Fieldner, A. C.; Davis, J. D.; Selvig, W. A.; Thiessen, R.; Reynolds, D. A.; Holmes, C. R. et al.
Item Type: Refine your search to only Report
open access

The City Home Garden

Description: Revised edition. "Fresh vegetables for an average family may be grown upon a large back yard or city lot.... Thousands of acres of idle land that may be used for gardens are still available within the boundaries of our large cities. Some of the problems that confront the city gardener are more difficult than those connected with the farm garden, and it is the object of this bulletin to discuss these problems from a practical standpoint." -- p. 2. Soil preparation, tools, seeding, watering, dise… more
Date: 1938
Creator: Beattie, W. R. (William Renwick), b. 1870
Item Type: Refine your search to only Pamphlet
open access

Coal-Mine Accidents in the United States, 1935

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1938
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.
Item Type: Refine your search to only Report
open access

Community cotton production.

Description: Recommends and describes the "one-variety community method" of cotton production, in which a community limits itself to growing a single variety of cotton in order to produce a uniform product.
Date: 1938
Creator: Cook, O. F. (Orator Fuller), 1867-1949 & Martin, R. D. (Robert Doane), 1896-
Item Type: Refine your search to only Book
open access

Copper Mining in North America

Description: From introduction: "In this paper are assembled and summarized many subjects relating to the copper industry in North America. Production of mines and districts, history of the industry in North America. Production of mines and districts, history of the industry, geology, of the principal deposits, and mining methods and costs are discussed."
Date: 1938
Creator: Gardner, E. D.; Johnson, C. H. & Butler, B. S.
Item Type: Refine your search to only Report
open access

Crushing and Grinding

Description: From introduction: "The purpose of this bulletin is to discuss the theory of crushing and grinding in relation to present-day discoveries and developments and to consider the various mechanical appliances from a theoretical basis."
Date: 1938
Creator: Gross, John
Item Type: Refine your search to only Report
open access

Culture and Pests of Field Peas

Description: This bulletin discusses the culture of the field and diseases and insects which commonly afflict it. Diseases discussed include leaf spot, stem blight, bacterial blight, left blotch, powdery mildew, downy mildew, anthracnose, fusarium wilt, root rot, and mosaic. The pea weevil, aphid, and moth are the insects discussed, as well as the nematode.
Date: 1938
Creator: McKee, Roland & Schoth, H. A. (Harry August), b. 1891
Item Type: Refine your search to only Pamphlet
open access

Experiment Station Record, Volume 76, January-June, 1937

Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico station. Name and subject indexes start on page 897.
Date: 1938
Creator: United States. Office of Experiment Stations.
Item Type: Refine your search to only Book
open access

Experiment Station Record, Volume 77, July-December, 1937

Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Puerto Rico Station. Name and subject indexes start on page 897.
Date: 1938
Creator: United States. Office of Experiment Stations.
Item Type: Refine your search to only Book
open access

Farm dairy houses.

Description: Describes the importance of a milk house on the farm. Provides construction guidelines, illustrations, and floor plans.
Date: 1938
Creator: Kelly, Ernest, 1883-; Parks, K. E. (Karl Eaton) & Hotis, Ralph P., 1890-1935.
Item Type: Refine your search to only Book
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