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Abacus Giving the Variation of the Mean Pressure of an Aviation Engine as a Function of its Speed of Rotation
Comparing the results of the calculations for computing the mean pressure of an aviation engine for any number of revolutions, with those of experiment, the writer, by numerous examples, shows the perfect agreement between them. This report will show that, by means of a special abacus, an engineer can instantly plot the characteristics of an engine.
Date:
March 1921
Creator:
Margoulis, W.
Object Type:
Report
System:
The UNT Digital Library
The Abilene Daily Reporter (Abilene, Tex.), Vol. 34, No. 80, Ed. 1 Tuesday, March 1, 1921
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
March 1, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Ada Evening News (Ada, Okla.), Vol. 17, No. 292, Ed. 1 Tuesday, March 1, 1921
Daily newspaper from Ada, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 1, 1921
Creator:
Brown, Marvin
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Airplane Crashes: Engine Troubles: A Possible Explanation
The aim was to bring attention to what might be the cause of some aircraft accidents for which there was no satisfactory explanation. The author notes that in testing aircraft accidents at the Bureau of Standards, it happened frequently that the engine performance became erratic when the temperature of the air entering the carburetor was between 0 C and 20 C. Investigation revealed the trouble to have been caused by the formation and collection of snow somewhere between the entrance to the carburetor and the manifold, probably at the throttle.
Date:
March 1921
Creator:
Sparrow, Stanwood W.
Object Type:
Report
System:
The UNT Digital Library
Amarillo Daily News (Amarillo, Tex.), Vol. 12, No. 47, Ed. 1 Tuesday, March 1, 1921
Daily newspaper from Amarillo, Texas that includes local, state and national news along with extensive advertising.
Date:
March 1, 1921
Creator:
Pope, Joe L.
Object Type:
Newspaper
System:
The Portal to Texas History
Analytical methods for computing the polar curves of airplanes
This report presents a method of calculating polar curves which is at least as precise as graphical methods, but it more rapid. Knowing the wind tunnel test of a wing and the performances of an airplane of the same profile, it is easy to verify the characteristic coefficients and, at the same time, the methods determining induced resistances.
Date:
March 1921
Creator:
Le Sueur
Object Type:
Report
System:
The UNT Digital Library
The Art of Writing Scientific Reports
As the purpose of the report is to transmit as smoothly and as easily as possible, certain facts and ideas, to the average person likely to read it, it should be written in a full and simple enough manner to be comprehended by the least tutored, and still not be boring to the more learned readers.
Date:
March 1921
Creator:
Norton, F. H.
Object Type:
Report
System:
The UNT Digital Library
Athens 1921 Sheet 1
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 2
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 3
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 4
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 5
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 6
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 7
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 8
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 9
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 10
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 11
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Athens 1921 Sheet 12
Sanborn map sheet showing an area of Athens in Henderson County, Texas, including geographic features, buildings, and details related to risk assessment for fire insurance.
Date:
March 1921
Creator:
Sanborn Map Company
Object Type:
Map
System:
The Portal to Texas History
Austin American (Austin, Tex.), Ed. 1 Tuesday, March 1, 1921
Daily newspaper from Austin, Texas that includes local, state, and national news along with advertising.
Date:
March 1, 1921
Creator:
Cressey, Kendall B.
Object Type:
Newspaper
System:
The Portal to Texas History
The Austin Statesman (Austin, Tex.), Vol. 49, No. 272, Ed. 1 Tuesday, March 1, 1921
Daily newspaper from Austin, Texas that includes local, state, and national news along with advertising.
Date:
March 1, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Automatic-Cut-Off
Patent for an automatic cut-off part for a steam inlet pipe.
Date:
March 1, 1921
Creator:
La Bauve, William H.
Object Type:
Patent
System:
The Portal to Texas History
The Bonham Daily Favorite (Bonham, Tex.), Vol. 23, No. 178, Ed. 1 Tuesday, March 1, 1921
Daily newspaper from Bonham, Texas that includes local, state, and national news along with advertising.
Date:
March 1, 1921
Creator:
Spotts, Sherwood
Object Type:
Newspaper
System:
The Portal to Texas History
Breckenridge American (Breckenridge, Tex), Vol. 1, No. 209, Ed. 1, Tuesday, March 1, 1921
Daily newspaper (except Sunday) from Breckenridge, Texas that includes local, state and national news along with extensive advertising.
Date:
March 1, 1921
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History