Partner
Oklahoma Historical Society
910
UNT Libraries
372
UNT Libraries Government Documents Department
83
Abilene Library Consortium
36
Howard Payne University Library
32
Breckenridge Public Library
31
Rosenberg Library
31
Matagorda County Museum & Bay City Public Library
29
Bonham Public Library
27
Cooke County Library
26
81 More
Collection
Texas Digital Newspaper Program
1,004
Oklahoma Digital Newspaper Program
902
Tocker Foundation Grant
268
Abilene Library Consortium
129
Texas Patents
66
Austin American-Statesman Newspaper Collection
61
The Drumright Derrick
51
Texas Borderlands Newspaper Collection
40
Sapulpa Area Newspaper Collection
36
Breckenridge Daily American
31
200 More
Country
Year
Month
The Schulenburg Sticker (Schulenburg, Tex.), Vol. 27, No. 32, Ed. 1 Friday, April 29, 1921
Weekly newspaper from Schulenburg, Texas that includes local, state and national news along with advertising.
Date:
April 29, 1921
Creator:
Price, J. A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Coupling of Engines
This report examines the idea of coupling numerous engines together to turn a single propeller, which the author feels would free aircraft design from the problems of multi-engine and propeller design.
Date:
April 1921
Creator:
Boccaccio, Paul
Object Type:
Report
System:
The UNT Digital Library
Resume of the Theory of Naval and Aerial Propulsive Propellers and of Airplanes in the Rectilinear Flight
Though dissimilar, these two subjects have been united because they have some points in common. The computation of the movement of an airplane can only be correctly established if we are in a position to know exactly the thrust and resisting torque of the propeller for the various values of slip, which may vary greatly according to circumstance. The first part of the work concerns propellers and introduces as a fundamental variable, the true slip (delta) with respect to the effective pitch, which is the advance per revolution of the propeller corresponding to no thrust. The second part deals with characteristic curves of an airplane.
Date:
April 1921
Creator:
Rateau, A.
Object Type:
Report
System:
The UNT Digital Library
Abstracts from the German Technical Press: Rates for Flights Organized by the State
Report presenting tariffs that are written for all aircraft manufacturing companies to follow regarding aircraft orders.
Date:
April 1921
Creator:
United States. National Advisory Committee for Aeronautics.
Object Type:
Report
System:
The UNT Digital Library
The Technical Development of the Transport airplane: Report of the Aero-Technical Conference of the Scientific Association for Aeronautics, March 5, 1919
The abolition of military qualifications gives free scope to new technical possibilities in the development of transport airplanes. This report notes the various considerations that must be made when designing aircraft to meet the needs of commercial passengers. Comfort and safety must be emphasized.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Sixth Meeting of the Members of the German Scientific Association for Aeronautics
Report presenting a description of a meeting of the German Scientific Association for Aeronautics. The topics that were discussed are described.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Study of the Resistance Offered by Propellers Rotating on an Airstream
This report presents a series of tests conducted to verify the formula for thrust P = q(exp 2) D(exp 2) V(exp 2), where P represents thrust, V the velocity of the airstream, D the diameter of the propeller, and q the lifting quality of a comparative propeller which is called the conjugate propeller.
Date:
April 1921
Creator:
Lame, M.
Object Type:
Report
System:
The UNT Digital Library
Extracts from the German Technical Process. Transport Airplanes.
Report presenting a description of the transition stage of airplanes and how it will change with new developments in aircraft design. The details of the debate between centralized or decentralized installation are also provided, including some of the pros and cons of each.
Date:
April 1921
Creator:
Rohrbach, A. K.
Object Type:
Report
System:
The UNT Digital Library
On the Resistance of the Air at High Speeds and on the Automatic Rotation of Projectiles
Here, the laws governing the flow of a compressible fluid through an opening in a thin wall are applied to the resistance of the air at high speeds, especially as applied to the automatic rotation of projectiles. The instability which we observe in projectiles shot into the air without being given a moment of rotation about their axis of symmetry, or without stabilizing planes, is a phenomenon of automatic rotation. It is noted that we can prevent this phenomenon of automatic rotation by bringing the center of gravity sufficiently near one end, or by fitting the projectile with stabilizing planes or a tail.
Date:
April 1921
Creator:
Riabouchinski, D.
Object Type:
Report
System:
The UNT Digital Library
Gordon Bennett Airplane Cup 1920
The characteristics of the airplanes built for the Gordon Bennett Airplane Cup race that took place on September 28, 1920 are described. The airplanes are discussed from a aerodynamical point of view, with a number of new details concerning the French machines. Also discussed is the regulation of future races. The author argues that there should be no limitations on the power of the aircraft engines. He reasons that in the present state of things, liberty with regard to engine power does not lead to a search for the most powerful engine, but for one which is reliable and light, thus leading to progress.
Date:
April 1921
Creator:
Margoulis, W.
Object Type:
Report
System:
The UNT Digital Library
Similitude tests on wing sections
Report presenting an exploration of the application of model test results to full size construction, which assumes that either the resistance varies as the square of the speed within, the range of speeds in question or that the mechanical similarity law is fulfilled by the model test. The latter requires that the relation of airflow to the model be exactly like that for the large machine.
Date:
April 1921
Creator:
Kumbruch, H. & Bacon, D. L.
Object Type:
Report
System:
The UNT Digital Library
Recent European Developments in Helicopters
Descriptions are given of two captured helicopters, one driven by electric power, the other by a gasoline engine. An account is given of flight tests of the gasoline powered vehicle. After 15 successful flight tests, the gasoline powered vehicle crashed due to the insufficient thrust. Also discussed here are the applications of helicopters for military observations, for meteorological work, and for carrying radio antennas.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Beaver Herald (Beaver, Okla.), Vol. 33, No. 45, Ed. 1, Thursday, April 7, 1921
Weekly newspaper from Beaver, Oklahoma that includes local, state and national news along with advertising.
Date:
April 7, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Beaver Herald (Beaver, Okla.), Vol. 33, No. 46, Ed. 1, Thursday, April 14, 1921
Weekly newspaper from Beaver, Oklahoma that includes local, state and national news along with advertising.
Date:
April 14, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Beaver Herald (Beaver, Okla.), Vol. 33, No. 47, Ed. 1, Thursday, April 21, 1921
Weekly newspaper from Beaver, Oklahoma that includes local, state and national news along with advertising.
Date:
April 21, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Beaver Herald (Beaver, Okla.), Vol. 33, No. 48, Ed. 1, Thursday, April 28, 1921
Weekly newspaper from Beaver, Oklahoma that includes local, state and national news along with advertising.
Date:
April 28, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Farmers Champion (Elgin, Okla.), Vol. 11, No. 29, Ed. 1, Wednesday, April 27, 1921
Weekly newspaper from Elgin, Oklahoma that includes state and national news and information along with advertising.
Date:
April 27, 1921
Creator:
Wettengel & Son
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Farmers Champion (Elgin, Okla.), Vol. 11, No. 26, Ed. 1, Wednesday, April 6, 1921
Weekly newspaper from Elgin, Oklahoma that includes state and national news and information along with advertising.
Date:
April 6, 1921
Creator:
Wettengel & Son
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Farmers Champion (Elgin, Okla.), Vol. 11, No. 27, Ed. 1, Wednesday, April 13, 1921
Weekly newspaper from Elgin, Oklahoma that includes state and national news and information along with advertising.
Date:
April 13, 1921
Creator:
Wettengel & Son
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Farmers Champion (Elgin, Okla.), Vol. 11, No. 28, Ed. 1, Wednesday, April 20, 1921
Weekly newspaper from Elgin, Oklahoma that includes state and national news and information along with advertising.
Date:
April 20, 1921
Creator:
Wettengel & Son
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Miner (Krebs, Okla.), Vol. 10, No. 6, Ed. 1, Thursday, April 7, 1921
Weekly newspaper from Krebs, Oklahoma. Coverage includes local, state, and national news, along with advertising.
Date:
April 7, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Miner (Krebs, Okla.), Vol. 10, No. 10, Ed. 1, Thursday, April 14, 1921
Weekly newspaper from Krebs, Oklahoma. Coverage includes local, state, and national news, along with advertising.
Date:
April 14, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Miner (Krebs, Okla.), Vol. 10, No. 11, Ed. 1, Thursday, April 21, 1921
Weekly newspaper from Krebs, Oklahoma. Coverage includes local, state, and national news, along with advertising.
Date:
April 21, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Miner (Krebs, Okla.), Vol. 10, No. 12, Ed. 1, Thursday, April 28, 1921
Weekly newspaper from Krebs, Oklahoma. Coverage includes local, state, and national news, along with advertising.
Date:
April 28, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History