National Advisory Committee for Aeronautics (NACA) - 124 Matching Results

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The A. B. Flygindustri "K 37" (Swedish Junkers): A Low-Wing All-Metal Military Airplane

Description: Report discusses the characteristics of the K 37 all-metal long-wing monoplane and its use for long-distance scouting, as a day bomber, and as a heavy fighting airplane. Its engines, climbing capacity, action radius, bombing installation, fuselage, controls, and landing gear are explored in depth.
Date: October 1929
Creator: United States. National Advisory Committee for Aeronautics.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerodynamic theory and tests of strut forms 2

Description: This report presents the second of two studies under the same title. In this part five theoretical struts are developed from distributed sources and sinks and constructed for pressure and resistance tests in a wind tunnel. The surface pressures for symmetrical inviscid flow are computed for each strut from theory and compared with those found by experiment. The theoretical and experimental pressures are found to agree quantitatively near the bow, only qualitatively over the suction range, the e… more
Date: May 1929
Creator: Smith, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aeromechanical Experimentation (Wind Tunnel Tests)

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Airplane Drag

Description: It has been less well understood that the induced drag (or, better said, the undesired increase in the induced drag as compared with the theoretical minimum calculated by Prandtl) plays a decisive role in the process of taking off and therefore in the requisite engine power. This paper seeks to clarify the induced drag.
Date: December 1929
Creator: Töpfer, Carl
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Albessard "Triavion" Airplane (French): A Two-Seat Tandem Monoplane

Description: Autostability is the watchword of this tandem monoplane. The tandem design causes a natural flat flight pattern and it can also land and take off from very short runways. Details of the form, wings, ailerons, fuselage, characteristics, performances, drawings, and photographs are provided.
Date: January 1929
Creator: Serryer, J.
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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Analysis of flight and wind-tunnel tests on Udet airplanes with reference to spinning characteristics

Description: This report presents an analysis of results of wind-tunnel tests conducted at the D.V.L. Values were determined for the effectiveness of all the controls at various angles of attack. The autorotation was studied by subjecting the rotating model to an air blast.
Date: March 1929
Creator: Herrmann, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Annual Report of the National Advisory Committee for Aeronautics (14th). Administrative Report Including Technical Reports Nos. 283 to 308

Description: Report includes the National Advisory Committee for Aeronautics letter of submittal to the president, congressional report, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Date: 1929
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Balance of Moments and the Static Longitudinal Stability of Airplanes

Description: A nomogram is developed which renders it possible by drawing a few lines, to determine: the location of the center of gravity for zero wing and tail moments; the longitudinal dihedral angle; the tail coefficient F(sub h) iota/F(sub t). Moreover there is no difficulty in determining the magnitude of the restoring moment or of the unstable moment.
Date: December 1929
Creator: Müller, Horst
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Bristol "Bulldog" (British): A Single-Seat All-Steel Fighter

Description: Circular presenting a description of the Bristol Bulldog, which is a single-seat all-steel fighter aircraft powered by a Bristol Jupiter radial air-cooled engine. Details regarding the components, controls, stabilizers, design, flight characteristics, drawings, and photographs are provided.
Date: October 1929
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Buckling Tests of Light-Metal Tubes

Description: Report presenting an attempt to determine mathematically the buckling-strength curves of various centrally loaded light-metal tubes which exhibit conspicuous differences of behavior under compressive loads. For this purpose, Von Karman's method is used after adapting it to special conditions.
Date: August 1929
Creator: Schroeder, August
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of the Pressures on Aircraft Engine Bearings

Description: For aircraft engines the three principal operating conditions are idling speed, cruising speed, and diving with the engine stopped. In what follows, we will discuss a method which affords a good idea of the course of pressure for the above mentioned operating conditions. The pressures produced in the driving gear are of three kinds; namely, the pressure due to gases, the pressure due to the inertia of the rotating masses, and the pressure due to the inertia of the reciprocating masses.
Date: December 1929
Creator: Steigenberger, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cantilever Wings for Modern Aircraft: Some Aspects of Cantilever Wing Construction with Special Reference to Weight and Torsional Stiffness

Description: In the foregoing remarks I have made an attempt to touch on some of the structural problems met with in cantilever wings, and dealt rather fully with a certain type of single-spar construction. The experimental test wing was a first attempt to demonstrate the principles of this departure from orthodox methods. The result was a wing both torsionally stiff and of light weight - lighter than a corresponding biplane construction.
Date: November 1929
Creator: Stieger, H. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Condensed Data on the Aircraft Engines of the World

Description: This compilation of the outstanding characteristics of the available aircraft engines of the world was prepared as a compact ready reference for desk use. It does not pretend to be anything but a skeleton outline of the characteristics of engines reported in the technical press as being in either the experimental, development, or production stage. At present progress is quite rapid and by the time this compilation is disseminated new models may have superseded those listed, or changes may have … more
Date: April 1929
Creator: Fliedner, C. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Contribution to the Aileron Theory

Description: "In an attempt to treat theoretically the effect of ailerons, difficulty arises because an aileron may begin at any point of the wing. Hence the question arises as to how the transition of the lift distribution proceeds at such a point, since the effect of the aileron (i.e., the moment generated about the longitudinal axis) depends largely on this distribution. In order to answer this question regarding the lift distribution during irregular variations in the angle of attack at first independen… more
Date: December 1929
Creator: Betz, A. & Petersohn, E.
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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