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NACA Conference on High-Speed Aerodynamics: A Compilation of Papers Presented
A reproduction of the technical papers presented by staff members of the NACA Laboratories at the NACA Conference on High-Speed Aerodynamics at the Ames Aeronautical Laboratory during March 18-20, 1958. The primary purpose of the conference was to convey to military services and contractors the results of recent research and to provide an opportunity to discuss the results.
Date:
1958-03-18/1958-03-20
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
NACA Conference on Aircraft Loads, Structures, and Flutter
"This document contains reproductions of technical papers on some of the most recent research results on aircraft loads, flutter, and structures from the NACA laboratories. These papers were presented by members of the staff of the NACA laboratories at the Conference held at the Langley Aeronautical Laboratory March 5, 6, and 7, 1957. The primary purpose of this Conference was to convey to contractors of the military services and others concerned with the design of aircraft these recent research results and to provide those attending an opportunity to discuss the results" (p. 6).
Date:
March 5, 1957
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Investigations on Reductions of Friction on Wings, in Particular by Means of Boundary Layer Suction
Memorandum presenting investigation on reductions of friction on wings, especially by means of boundary-layer suction. The report is broken up into several sections, including: causes of transition, laminar profiles with the transition taking place, laminar boundary-layer suction, investigation of the laminar pressure increase, investigation of the slot flow for laminar boundary-layer suction with single slots, tests about keeping a boundary layer for high Reynolds laminar with the aid of boundary-layer suction, and an investigation of a slightly-cambered laminar suction profile of 10.5-percent thickness.
Date:
August 1947
Creator:
Pfenninger, Werner
Object Type:
Report
System:
The UNT Digital Library
Application of the Theory of Free Jets
Based upon Kirchoff's theory of free jets the flow through different screen arrangements of flat plates, as chiefly encountered with turbines in the cavitation zone is defined. It is shown by experiments that these theoretical results are very well representative in most cases of the conditions of discharge from water in air and consequently by cavitation. In addition, the experiments reveal a picture of the discrepancies between the actual flow and the theory of discharge of air in air (of water in water without cavitation).
Date:
April 1932
Creator:
Betz, A. & Petersohn, E.
Object Type:
Report
System:
The UNT Digital Library
Coefficients of Flow of Standard Nozzles
We first undertook experiments with air, devoted principally to the investigation of the disturbances due to the differences in the nature of the flow to the nozzle. The difficulty of measuring the air, however, caused us to experiment with water. Due to the possibility of measuring the capacity of the container, this method was much more accurate than measuring with Pitot tobes.
Date:
January 1930
Creator:
Mueller, H. & Peters, H.
Object Type:
Report
System:
The UNT Digital Library
Aeronautic Instruments
"The development of aeronautic instruments. Vibrations, rapid changes of the conditions of flight and of atmospheric conditions, influence of the air stream all call for particular design and construction of the individual instruments. This is shown by certain examples of individual instruments and of various classes of instruments for measuring pressure, change of altitude, temperature, velocity, inclination and turning or combinations of these" (p. 1).
Date:
February 1924
Creator:
Everling, E. & Koppe, H.
Object Type:
Report
System:
The UNT Digital Library
Fire prevention on airplanes. Part 1
Various methods for preventing fires in airplanes are presented with most efforts centering around prevention of backfires, new engine and carburetor designs, as well as investigations on different types of fuels.
Date:
October 1929
Creator:
Sabatier, J.
Object Type:
Report
System:
The UNT Digital Library
Aviation Spirit - Past, Present, and Future
The volatile fuel of the high-speed internal combustion engine has, in the past, consisted almost exclusively of the lighter distillates from crude petroleum. Alternative and supplementary fuels are discussed such as: tetraline, dekalin, alcohol, cyclo-hexenes.
Date:
September 1923
Creator:
Dunstan, A. E. & Thole, F. B.
Object Type:
Report
System:
The UNT Digital Library
Aeromechanical Experimentation (Wind Tunnel Tests)
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.
Object Type:
Report
System:
The UNT Digital Library
Remarks on Building of Low-Powered Airplanes
"If the low-powered airplane is to be used advantageously by private individuals, the most important consideration is a smaller fuel consumption and, hence, a lower engine power. From experiments with gliders, it appears entirely possible, by utilizing ascending winds (on the weather side of mountains and those generated by the heat of the sun) and by employing engine flight intermittently, as required to fly long distances over land" (p. 1).
Date:
January 1924
Creator:
Langsdorff, Werner v.
Object Type:
Report
System:
The UNT Digital Library
Device for Measuring Sound in Airplane Engines
Memorandum describing a device, constructed according to the system of Gati, with which it is possible to measure the sound of an engine and test the effect of a silencer.
Date:
June 1924
Creator:
Robrovsky, T.
Object Type:
Report
System:
The UNT Digital Library
Choice of Profile for the Wings of an Airplane Part 2
This report gives a general method for drawing airplane profiles. This method is useful, but it leads to a somewhat laborious drawing which becomes quite complicated when we take a transformation function having terms of a high degree.
Date:
June 1928
Creator:
Toussaint, A. & Carafoli, E.
Object Type:
Report
System:
The UNT Digital Library
Rules and Regulations Governing the Fokker Soaring-Flight Contest Over Water or Level Land
Memorandum presenting the rules and regulations of the Fokker Soaring Flight Contest, which occurred over the water and over level land.
Date:
June 1923
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Travel of the Center of Pressure of Airfoils Transversely to the Air Stream
The experiments here described were performed for the purpose of obtaining the essential facts concerning the distribution of the air force along the span. We did not follow, however, the time-consuming method of point-to-point measurements of the pressure distribution on the wing surfaces, but determined directly the moment of mean force about an axis passing through the middle of the span parallel to the direction of flight.
Date:
September 1929
Creator:
Katzmayr, Richard
Object Type:
Report
System:
The UNT Digital Library
Crank Case Scavenging of Two-Stroke-Cycle Engines
This report presents the results of tests on two-stroke-cycle Diesel engines to determine the efficiency of the crank case scavenging pump. It was determined that efficiencies were between 95 and 100%.
Date:
June 1929
Creator:
List, Hans
Object Type:
Report
System:
The UNT Digital Library
Experimental Research on the Friction of Pivots
In horology the friction between solids is of the greatest importance; one limited, however, to the application of the laws of Coulomb which, do not at all correspond with reality. This report presents a review of the subject and some general conclusions. The choice of lubricant is discussed as well as the pressure between frictional surfaces. The gears in a watch are used extensively as examples.
Date:
May 1930
Creator:
Jaquerod, A.; Defossez, L. & Mügeli, H
Object Type:
Report
System:
The UNT Digital Library
Spontaneous Combustion of Hydrogen
It is shown by the author's experiments that hydrogen which escapes to the atmosphere through openings in the system may burn spontaneously if it contains dust. Purely thermal reasoning can not account for the combustion. It seems to be rather an electrical ignition. In order to determine whether the cause of the spontaneous ignition was thermo-chemical, thermo-mechanical, or thermo-electrical, the experiments in this paper were performed.
Date:
March 4, 1922
Creator:
Pothmann, P. & Nusselt, Wilhelm
Object Type:
Report
System:
The UNT Digital Library
Concrete Airship Sheds at Orly, France Part 2: Supporting Structure and Method of Moving, Mechanism for Moving the Centering, Apparatus for Handling the Materials, Remarks on Construction Details
This report deals mainly with the methods of construction employed when after the plan had been approved. The foundation, side walls, doors and roof are all discussed and the economic savings resulting from this method of construction.
Date:
October 1925
Creator:
Freyssinet
Object Type:
Report
System:
The UNT Digital Library
Load Assumptions for Calculating the Strength of Airplanes
"The following load assumptions shall be taken as the basis of the strength calculations. Certain definite load conditions (e.g. of flight, control, landing and transport) shall be assumed. The loads shall be assumed to be safe loads, constant or only slowly variable, and the inertia forces due to elastic deformation are accordingly disregarded. The external forces, the force of gravity and the inertia forces on the whole airplane shall produce a condition of equilibrium" (p. 1).
Date:
September 1930
Creator:
unknown
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
The laboratories of the Technical Section of Aeronautics (Service Technique de L'Aeronautique or S.T.Ae.)
An historical sketch of the laboratories of the Technical Section is provided. A breakdown of the different departments and their specialties is also listed.
Date:
February 1923
Creator:
Robert
Object Type:
Report
System:
The UNT Digital Library
Measurements of Vertical Air Currents in the Atmosphere
To summarize, the experiments with balloons, sailplanes and light airplanes conducted thus far, reveal the vertical velocities of the air to be primarily dependent on the vertical temperature distribution. Stable stratifications result in up-and-down currents forced by the contour of the ground, which are readily recognized in flight and, if need be, may be avoided.
Date:
November 1931
Creator:
Lange, K. O.
Object Type:
Report
System:
The UNT Digital Library
"AM" Flexible Metal Joint
A flexible metal joint used for connecting fuel lines is investigated and methods for assembly are included.
Date:
February 1923
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Protection of Duralumin From Corrosion
Different types of coatings to protect duralumin from corrosion are discussed. Plating, etching, brushing, coloring, painting and varnishing are all investigated.
Date:
March 1927
Creator:
Nelson, William
Object Type:
Report
System:
The UNT Digital Library