Collection
Serial/Series Title
NACA Technical Memorandums
4
NACA Technical Notes
3
National Bureau of Standards Reports
2
Report of the National Conference on Weights and Measures
2
Coal-Mine Fatalities
1
Leaflet (United States. Department of Agriculture)
1
NACA Aircraft Circulars
1
NACA Special Reports
1
NACA Technical Reports
1
Report of investigations (United States. Bureau of Mines)
1
1 More
Country
14 Matching Results
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1 - 14 of
14
Basic Requirements of Fuel-Injection Nozzles for Quiescent Combustion Chambers
This report presents test results obtained during an investigation of the performance of a single-cylinder, high-speed, compression-ignition test engine when using multiple-orifice fuel-injection valve nozzles in which the number and the direction of the orifices were varied independently.
Date:
June 1931
Creator:
Spanogle, J. A. & Foster, H. H.
Object Type:
Report
System:
The UNT Digital Library
Boning Lamb Cuts.
Describes the process of deboning lamb meat.
Date:
June 1931
Creator:
Warner, K. F.
Object Type:
Book
System:
The UNT Digital Library
Coal-Mine Fatalities in May, 1931
Report issued by the U.S. Bureau of Mines on the coal mine related deaths that occurred during the month of May, 1931. The number of fatalities and their causes are presented. This report includes tables and graphs.
Date:
June 1931
Creator:
Adams, William Waugh & Chenoweth, L.
Object Type:
Report
System:
The UNT Digital Library
The Dewoitine D 33 Commercial Airplane (French): A Low-Wing Cantilever Monoplane
Circular describing the Dewoitine D 33 commercial airplane, which is a low-wing cantilever monoplane. Details of the wing, fuel tanks, fuselage, landing gear, controls, engine, characteristics, drawings, and photographs are provided.
Date:
June 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Effect of Stabilizing Forces on Turbulence
The appearance of expressed discontinuity layers in the free atmosphere, where a warm air mass flows over a cold mass without perceptible intermingling forms the basis of the present report. In these experiments an air stream is to be blown between a water-cooled and a vapor-heated plate. According to what preceded it is anticipated that the exchange will be enhanced.
Date:
June 1931
Creator:
Prandtl, L.
Object Type:
Report
System:
The UNT Digital Library
Eleventh Rhön Soaring-Flight Contest, 1930
This report presents the results and a recounting of the new technological developments that were developed for the 11th Rhon Soaring Contest.
Date:
June 1931
Creator:
Georgii, Walter
Object Type:
Report
System:
The UNT Digital Library
Endurance and Other Properties at Low Temperatures of Some Alloys for Aircraft Use
"The low temperature endurance properties of materials for aircraft construction are not well known. In order to determine them, apparatus for testing endurance at -40 C has been devised. The endurance properties of monel metal, low-carbon stainless steel, "18 and *, " 3 1/2% Ni steel and chromium-molybdenum steel have been determined at -40 C and at room temperature about +20 C. Tensile, impact and hardness tests of these materials have also been made at various temperatures" (p. 1).
Date:
June 1931
Creator:
Russell, H. W. & Welcker, W. A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Estimated Effect of Ring Cowl on the Climb and Ceiling of an Airplane
From Summary: "Although the application of a ring cowl to an airplane with an air-cooled engine increases the maximum L/D and the high speed to an appreciable extent, the performance in climb and ceiling is not increased as much as one would expect without analyzing the conditions. When a ring cowl is installed on an airplane, the propeller is set at a higher pitch to allow the engine to turn its rated r.p.m. at the increased high speed. V/nD is increased and the propeller efficiency at high speed is increased slightly. The ratio of r.p.m. at climbing speed, V(sub c) , to the r.p.m. at maximum speed, V (sub m) is dependent upon the ratio of V(sub c) to V(sub m)."
Date:
June 1931
Creator:
Louden, F. A.
Object Type:
Report
System:
The UNT Digital Library
The Frictionless Flow in the Region Around Two Circles
This investigation attempts to surpass the boundaries of pure mathematical interest in that it possesses as an example, a flow investigation in a multiply-connected region. Then the results appear to be carried out by means of an appropriate conformal representation of the region around two chosen closed curves. Thus we have the basis of an exact plane theory of the biplane.
Date:
June 1931
Creator:
Lagally, M.
Object Type:
Report
System:
The UNT Digital Library
Ice Prevention on Aircraft by Means of Engine Exhaust Heat and a Technical Study of Heat Transmission From a Clark Y Airfoil
"This investigation was conducted to study the practicability of employing heat as a means of preventing the formation of ice on airplane wings. The report relates essentially to technical problems regarding the extraction of heat from the exhaust gases and its proper distribution over the exposed surfaces. In this connection a separate study has been made to determine the variation of the coefficient of heat transmission along the chord of a Clark Y airfoil. Experiments on ice prevention both in the laboratory and in flight show conclusively that it is necessary to heat only the front portion of the wing surface to effect complete prevention" (p. 3).
Date:
June 12, 1931
Creator:
Theodorsen, Theodore & Clay, William C.
Object Type:
Report
System:
The UNT Digital Library
Landing Impact of Seaplanes
The theory of landing impact is briefly stated and the applicability of a previously suggested formula is extended. Theoretical considerations regarding impact measurements on models and actual seaplanes are followed by a brief description of the instruments used in actual flight tests. The report contains a description of the strength conditions and deals exhaustively with force measurements on the float gear of an "HE 9a" with flat-bottom and with V-bottom floats. The experimental data are given and compared with the theoretical results.
Date:
June 1931
Creator:
Pabst, Wilhelm
Object Type:
Report
System:
The UNT Digital Library
Report of the Twenty-Third National Conference on Weights and Measures, 1930
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
June 1931
Creator:
United States. National Bureau of Standards.
Object Type:
Report
System:
The UNT Digital Library
Report of the Twenty-Fourth National Conference on Weights and Measures, 1931
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
June 1931
Creator:
United States. National Bureau of Standards.
Object Type:
Report
System:
The UNT Digital Library
A Suggested Method for Measuring Turbulence
The desirability of a quantitative measure of turbulence is emphasized, and a possible method of attack on the problem is discussed. Data are presented to show that the hot-wire anemometer has possibilities as an instrument for measuring turbulence. An apparatus consisting essentially of two hot wire, one parallel to the air flow and one at right angles to it, is suggested.
Date:
June 1931
Creator:
Taylor, C. Fayette
Object Type:
Report
System:
The UNT Digital Library