Serial/Series Title
NACA Research Memorandums
391
NACA Technical Notes
347
Atomic Energy Commission Reports
330
GJBX
187
United States Department of Energy Grand Junction Office Reports
173
United States Geological Survey Reports
139
NACA Technical Memorandums
108
Argonne National Laboratory Reports
100
NACA Technical Reports
97
NACA Wartime Reports
93
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2,246 Matching Results
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2,246
British Certificates of Airworthiness
This report details the rules and regulations for obtaining a British airworthiness certificate. Aircraft loading and construction are especially important.
Date:
May 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
On a New Type of Wind Tunnel
Discussed here is a new type of wind tunnel, its advantages, the difficulties attendant upon its use, and the special methods required for its operation. The main difference between the new type of wind tunnel and the ones now in operation is the use of a different fluid. The idea is to diminish the effect of viscosity.
Date:
May 1921
Creator:
Munk, Max
Object Type:
Report
System:
The UNT Digital Library
Performance of a 300-horsepower Hispano-Suiza airplane engine
The National Bureau of Standards tested a 300-horsepower Hispano-Suiza engine to determine the characteristic performance of the engine at various altitudes. The engine was operated at the ground, at 25,000 feet, and at intermediate altitudes, both at full loads similar to those that would be imposed upon the engine at various speeds by a propeller whose normal full-load speed was 1,800 r.p.m. Friction horsepower also was determined in order that the mechanical efficiency of the engine might be calculated.
Date:
May 12, 1920
Creator:
Sparrow, S. W. & White, H. S.
Object Type:
Report
System:
The UNT Digital Library
Airplane Performance as Influenced by the Use of a Supercharged Engine
"The question of the influence of a supercharged engine on airplane performance is treated here in a first approximation, but one that gives an exact idea of the advantage of supercharging. Considered here is an airplane that climbs first with an ordinary engine, not supercharged, and afterwards climbs with a supercharged engine. The aim is to find the difference of the ceilings reached in the two cases" (p. 1).
Date:
May 1920
Creator:
de Bothezat, George
Object Type:
Report
System:
The UNT Digital Library
Notes on the Theory of the Accelerometer
Report discusses several types of accelerometers and how they function. Methods for reducing error and determining the source of the error, including the best placement for the device, are included.
Date:
May 1920
Creator:
Warner, E. P.
Object Type:
Report
System:
The UNT Digital Library
The Problem of the Helicopter
Report discussing some of the issues regarding the design and operation of helicopters and the theoretical basis behind them. Some particular issues covered include propeller blade design, helicopters in forced descent, horizontal travel, and stability and control.
Date:
May 1920
Creator:
Warner, E. P.
Object Type:
Report
System:
The UNT Digital Library
Relation of Rib Spacing to Stress in Wing Planes
The stress relations to the fabric and the rib consequent upon a change of spacing between ribs in a wing plane are discussed. Considering the wing plane as a static structure, and ignoring the question of aerodynamic efficiency, it appears that the unit stress in the rib and fabric will remain constant for constant p if the linear dimensions of both rib and fabric are increased alike, viz., if wing and fabric remain geometrically similar. Since the bulge and the structural dimensions remain geometrically similar, the whole distended plane remains so, and hence should have the same pressure distribution and efficiency.
Date:
May 1920
Creator:
Zahm, A. F.
Object Type:
Report
System:
The UNT Digital Library
Gold Dredging in the United States
Report discussing the development of gold dredging in the United States, the essential features of present-day dredges, the facts that determine whether a placer deposit can be profitably dredged, and the approved methods of prospecting placer ground and of operating dredges. Intended for designers and builders of dredges, mining engineers, and persons who may contemplate investing capital in placer-mining ventures.
Date:
May 1918
Creator:
Janin, Charles
Object Type:
Report
System:
The UNT Digital Library
Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma
Technical paper issued by the Bureau of Mines over studies of Oklahoma coal mines. As stated in the introduction, "this report describes the systems of mining used, points out their defects, and presents suggestions for improved methods, more especially as regards the applicability of different modifications of the panel system to mining coal in Oklahoma" (p. 5). This paper includes tables, maps, and illustrations.
Date:
May 1918
Creator:
Rutledge, J. J. & Harrington, Daniel
Object Type:
Report
System:
The UNT Digital Library
Temperature Measurements in Bessemer and Open-Hearth Practice
Technical paper issued by the Bureau of Standards over studies conducted on different types of furnaces, specifically the Bessemer and the open-hearth furnace. The results of the studies are presented and discussed. This paper includes tables, and illustrations.
Date:
May 8, 1917
Creator:
Burgess, George K.
Object Type:
Report
System:
The UNT Digital Library
Aeronautic Power Plant Investigations
Report presents the design of radiators, spark plugs and test equipment used to test the performance of aeronautic engines at high altitudes.
Date:
May 1917
Creator:
Dickinson, H. C.
Object Type:
Report
System:
The UNT Digital Library
Motor Gasoline Properties, Laboratory Methods of Testing, and Practical Specifications
Technical paper issued by the Bureau of Mines over studies conducted on motor gasoline. The methods, properties, and results of the studies are presented and discussed. This paper includes tables and an illustration.
Date:
May 1917
Creator:
Dean, E. W.
Object Type:
Report
System:
The UNT Digital Library
Waste of Oil and Gas in the Mid-Continent Fields
Technical paper issued by the Bureau of Mines over studies of waste in oil and gas fields in the mid-continent area. As stated in the introduction, this report "describes the general amounts and kinds of waste, and attempts to show the importance of conserving these natural resources" (p. 5). This paper includes tables, maps, illustrations, and photographs.
Date:
May 1914
Creator:
Blatchley, Raymond S.
Object Type:
Report
System:
The UNT Digital Library
The Death Valley Expedition: A Biological Survey of Parts of California, Nevada, Arizona, and Utah, Part 2
Collection of reports on Death Valley, the bordering region of California, Nevada, Arizona, and Utah. Reports include birds, reptiles and Batrachians, fishes, insects, mollusks, trees and shrubs, cactuses and yuccas, and list of localities in the reports.
Date:
May 31, 1893
Creator:
Fisher, A. K.; Stejneger, Leonhard; Gilbert, Charles H.; Riley, C. V.; Stearns, R. E. C.; Merriam, C. Hart et al.
Object Type:
Report
System:
The UNT Digital Library