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The Boundary Layer as a Means of Controlling the Flow of Liquids and Gases

Description: According to one of the main propositions of the boundary layer theory the scarcely noticeable boundary layer may, under certain conditions, have a decisive influence on the form of the external flow by causing it to separate from the wing surface. These phenomena are known to be caused by a kind of stagnation of the boundary layer at the point of separation. The present report deals with similar phenomena. It is important to note that usually the cause (external interference) directly affects … more
Date: March 1930
Creator: Schrenk, Oskar
Item Type: Refine your search to only Report
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Westland "Wessex" Commercial Airplane (British): A High-Wing Semicantilever Monoplane

Description: Circular presenting a description of the Westland Wessex, which differs from other airplanes of its class because of the mounting of the outboard engines on outriggers from the fuselage and the placing of the engines in such a way that the slipstream does not interfere with the movement of the wing. A description of the design, flight characteristics, blueprints, and photographs are provided.
Date: October 1930
Item Type: Refine your search to only Report
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Survey of Land-Grant Colleges and Universities, Volume 2

Description: Second volume of the results of a survey undertaken by the U.S. Office of Education to determine their achievements, objectives, and functions. This bulletin provides the data and information collected by the Office during the survey and suggestions about possible improvements or changes. This volume is divided into ten parts: Part I. Arts and sciences; Part II. Commerce and business; Part III. Teacher training; Part IV. Military education; Part V. Professional veterinary medicine; Part VI. S… more
Date: 1930
Creator: United States. Office of Education.
Item Type: Refine your search to only Book
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Survey of Land-Grant Colleges and Universities, Volume 1

Description: First volume of the results of a survey undertaken by the U.S. Office of Education to determine their achievements, objectives, and functions. This bulletin provides the data and information collected by the Office during the survey and suggestions about possible improvements or changes. This volume is divided into eleven parts: Part I. Historical introduction; Part II. Control and administrative organization; Part III. Business management and finance; Part IV. Work of the registrar; Part V. … more
Date: 1930
Creator: United States. Office of Education.
Item Type: Refine your search to only Book
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Riveting in Metal Airplane Construction Part 1 : Riveting Methods and Equipment in German Metal Airplane Construction

Description: "Although all constructors in Germany use duralumin quite frequently, and prefer cold riveting exclusively for permanent (nondetachable) connections of individual structural components, their methods and equipment are very diversified. The differences are due to a great extent to the diversity of structural types and to the special shapes of the individual subassemblies. The results is that different manufacturers have developed totally different riveting methods, as well as entirely different … more
Date: December 1930
Creator: Pleines, Wilhelm
Item Type: Refine your search to only Report
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