National Advisory Committee for Aeronautics (NACA) - 1,298 Matching Results

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Lautal as a Material for Airplane Construction

Description: Lautal is a refinable aluminum alloy which, unlike duralumin, contains no magnesium. According to the statements of the Lauta Works, lautal contains: aluminum, 94%; copper, 4%; silicon, 2%. The use of lautal as a construction material is discussed in relation to specific weight, production methods, and riveting tests.
Date: August 1929
Creator: Brenner, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sphere Drag Tests in the Variable Density Wind Tunnel

Description: The air forces on a twenty-centimeter sphere were measured after it had been rebuilt as an open throat type. The results from tests made at widely different densities and airspeeds and also on a smaller sphere are given. The conclusions are that approximately the same drag coefficient is obtained at a given value of the Reynolds number irrespective of what combination of the variables is used to obtain that value and that the turbulence of the air stream at the test section, as measured by the … more
Date: August 1929
Creator: Jacobs, Eastman N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spiral Tendency in Blind Flying

Description: "The flight path followed by an airplane which was being flown by a blindfolded pilot was observed and recorded. When the pilot attempted to make a straight-away flight there was a tendency to deviate from the straight path and to take up a spiral one" (p. 1).
Date: August 1929
Creator: Carroll, Thomas & McAvoy, William H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Amiot S.E.C.M. 110 C.1 : A Single-Seat Pursuit Monoplane

Description: Circular presenting a description of the Amiot S.E.C.M. 110 C.1, which is a single-seat pursuit monoplane. Some of the design principles that the aircraft was built from are provided. A description of the design, components, dimensions, flight characteristics, and photographs are provided.
Date: July 1929
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Analysis of Aircraft Structures as Space Frameworks: Method Based on the Forces in the Longitudinal Members

Description: The following examples do not take up the discussion of viewpoints to be heeded in determining the design of a framework for given external conditions. Rather they are methods for determining the forces in airplane fuselages and wings, though similar considerations are applied to certain simple cases of a different kind. The object of this treatise is to summarize and amplify these considerations from definite viewpoints.
Date: July 1929
Creator: Wagner, Herbert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Torsional Rigidity of Cantilever Wings With Constant Spar and Rib Sections

Description: "The present paper treats less of the effect of the union (of spars and ribs, namely, the reduction of the bending moment at the fixed ends of the spars) than of its influence on the torsional rigidity of the wing. The calculations are carried out for a two-spar wing of constant cross section, in which the ribs are replaced by a continuous member of constant rigidity" (p. 1).
Date: July 1929
Creator: Gabrielli, Giuseppe
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Use of Wheel Brakes on Airplanes

Description: The results of tests to determine the effect of wheel brakes on the landing run of an airplane under conditions of load and at various wind velocities are presented.
Date: July 1929
Creator: Carroll, Thomas & DeFrance, Smith J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wind Tunnel Pressure Distribution Tests on a Series of Biplane Wing Models Part I: Effects of Changes in Stagger and Gap

Description: This report is on the changes in forces on each wing of a biplane cellule when either the stagger or the gap is varied. Since each test was carried up to a 90 degree angle of attack, the results may be used in the study of stalled flight and of spinning as well as in the structural design of biplane wings.
Date: July 1929
Creator: Knight, Montgomery & Noyes, Richard W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wings With Nozzle-Shaped Slots

Description: Even before the publication of the results of the Gottingen experiments on the removal of the boundary layer by suction, experiments with nozzle-slotted wings were begun. A report of those experiments will be given here. Taken collectively, the experiments show that, as regards increasing the lift values, the effect of the air flowing from the nozzle-shaped slots is similar to the effect produced in the case of ordinary slotted wings. The high lift values are attained, however, at the smaller a… more
Date: July 1929
Creator: Katzmayr, Richard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Correcting Engine Tests for Humidity

Description: Note presenting tests using a multicylinder engine to determine the effect that atmospheric humidity has on some phases of engine performance. Three test series with different types of fuel were carried out. The results indicate that failure to allow for the effect of differences in atmospheric humidity may introduce errors as great as would be occasioned by failure to allow for changes in barometric pressure.
Date: June 1929
Creator: Brooks, Donald B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Force Measurements on Airplanes

Description: The most essential phenomena of aircraft should be classified according to their origin and then measured. Information can thus be obtained in a quicker, cheaper, and more reliable way than otherwise would be possible.
Date: June 1929
Creator: Seewald, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of the Effect of the Fuselage on the Wing of a Low-Wing Monoplane

Description: Memorandum presenting the mutual action of wing and fuselage, which greatly affects the construction of airplanes. A description of systematic wind-tunnel tests that were made to answer that question is provided. Other tests deal with the transition from fuselage to wing root, which, if inadequate on low-wing monoplanes, may become dangerous by causing the air flow to separate at the wing root.
Date: June 1929
Creator: Muttray, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The "Potez 33" Military Airplane (French)

Description: Circular describing the Potez 33, which is a military airplane that can be used for other purposes such as training pilots and as a messenger airplane due to its maneuverability and low landing speeds. A description of the controls, components, potential uses, characteristics, performance, drawings, and photographs are provided.
Date: June 1929
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pressure Distribution on a Slotted R.A.F. 31 Airfoil in the Variable Density Wind Tunnel

Description: Measurements were made in the variable density wind tunnel to determine the pressure distribution over one section of a R.A.F. 31 airfoil with a leading edge slot fully open. To provide data for the study of scale effect on this type of airfoil, the tests were conducted with air densities of approximately one and twenty atmospheres.
Date: June 1929
Creator: Jacobs, Eastman N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Strength of Tubing Under Combined Axial and Transverse Loading

Description: Note presenting a systematic study of the strength of duralumin and chrome-molybdenum steel round tubing in combined transverse and axial loading. A description of the formulas that are the groundwork for the study as well as the results of the tests are provided.
Date: June 1929
Creator: Tuckerman, L. B.; Petrenko, S. N. & Johnson, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tests of large airfoils in the propeller research tunnel, including two with corrugated surfaces

Description: This report gives the results of the tests of seven 2 by 12 foot airfoils (Clark Y, smooth and corrugated, Gottingen 398, N.A.C.A. M-6, and N.A.C.A. 84). The tests were made in the propeller research tunnel of the National Advisory Committee for Aeronautics at Reynolds numbers up to 2,000,000. The Clark Y airfoil was tested with three degrees of surface smoothness. Corrugating the surface causes a flattening of the lift curve at the burble point and an increase in drag at small flying angles.
Date: May 24, 1929
Creator: Wood, Donald H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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