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The Transformation of Heat in an Engine

Description: This report presents a thermodynamic basis for rating heat engines. The production of work by a heat engine rests on the operation of supplying heat, under favorable conditions, to a working fluid and then taking it away.
Date: April 1929
Creator: Neumann, Kurt
Partner: UNT Libraries Government Documents Department
open access

The Westland Iv Commercial Monoplane (British): Three "Cirrus III" Engine

Description: Circular presenting a description of the Westland IV, which is a high-wing monoplane with strut bracing, two outboard engines, a fairly large fuselage that provides comfortable cabin accommodation, and wide-track landing gear. Details of the design, flight characteristics, blueprints, and photographs are provided.
Date: April 1929
Partner: UNT Libraries Government Documents Department
open access

The Blackburn "Bluebird" Mark IV (British): All-Metal Biplane

Description: Circular presenting a description of the Blackburn Bluebird Mark IV, which is an all-metal airplane. Details are provided regarding constructional features, the cockpit, the gasoline system, and the flight characteristics.
Date: April 1929
Partner: UNT Libraries Government Documents Department
open access

Survey of Gravities of Domestic Crudes

Description: Report on the comparative gravities of oil extracted from different regions of the United States.
Date: April 1929
Creator: Hopkins, G. R. & Coons, A. B.
Partner: UNT Libraries Government Documents Department
open access

Aeromechanical Experimentation (Wind Tunnel Tests)

Description: The following report endeavors to show that aeromechanical experimentation has become an important aid to theory. Experiments can be tried with separate parts of airplanes or with models of whole airplanes, with propellers, and with anything else that comes into contact with moving air.
Date: April 1929
Creator: Katzmayr, R.
Partner: UNT Libraries Government Documents Department
open access

Theoretical Investigation of the Effect of the Ailerons on the Wing of an Airplane

Description: The present work investigates, on the basis of Prandtl's wing theory, the form of the lift distribution when the ailerons are deflected in opposite directions. An ideal fluid and a wing with a rectangular form are assumed. The moments must not cause any rotation of the wing or any deviation from the rectilinear motion.
Date: April 1929
Creator: Wieselsberger, C.
Partner: UNT Libraries Government Documents Department
open access

Condensed Data on the Aircraft Engines of the World

Description: This compilation of the outstanding characteristics of the available aircraft engines of the world was prepared as a compact ready reference for desk use. It does not pretend to be anything but a skeleton outline of the characteristics of engines reported in the technical press as being in either the experimental, development, or production stage. At present progress is quite rapid and by the time this compilation is disseminated new models may have superseded those listed, or changes may have … more
Date: April 1929
Creator: Fliedner, C. S.
Partner: UNT Libraries Government Documents Department
open access

Review of State Mine Inspector's Reports as They Relate to Accidents from Falls of Roof

Description: Report issued by the U.S. Bureau of Mines over state mine inspection reports from 19 U.S. states. The information in the reports includes details of accidents, locations that specific accidents occurred, and proposed remedies for prevention of future accidents. This report includes tables.
Date: April 1929
Creator: Paul, James Washington
Partner: UNT Libraries Government Documents Department
open access

Full-scale turning characteristics of the U.S.S. Los Angeles

Description: This paper present a description of the method employed and results obtained in full-scale turning trials on the rigid airship U. S. S. "Los Angeles". The results of this investigation are not sufficiently comprehensive to permit definite conclusions as to the variation of turning characteristics with changes in speed and rudder angle. They indicate however, that the turning radius compares favorably with that for other large airships, that the radius is independent of the speed, that the posit… more
Date: April 17, 1929
Creator: Thompson, F. L.
Partner: UNT Libraries Government Documents Department
open access

Landing and Braking of Airplanes

Description: In the numerical examples, we have considered an airplane landing in calm air in a fixed direction after crossing the border (with its obstacles) at a height of 30 m. Its stopping point is at a distance D from the obstacle, comprising: a distance D(sub 1) in regular gliding flight; a distance D(sub 2) in levelling off; a distance D(sub 3) in taxying on the ground. The calculations enable us to make out the following table, which gives an idea of the improvements to be expected in the use of var… more
Date: April 1929
Creator: Breguet, Louis
Partner: UNT Libraries Government Documents Department
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