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The Aerodynamic Characteristics of Airfoils as Affected by Surface Roughness

Description: "The effect on airfoil characteristics of surface roughness of varying degrees and types at different locations on an airfoil was investigated at high values of the Reynolds number in a variable density wind tunnel. Tests were made on a number of National Advisory Committee for Aeronautics (NACA) 0012 airfoil models on which the nature of the surface was varied from a rough to a very smooth finish. The effect on the airfoil characteristics of varying the location of a rough area in the region o… more
Date: April 1933
Creator: Hooker, Ray W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Aerodynamic Effect of a Retractable Landing Gear

Description: "Tests were conducted in the N.A.C.A. full scale wind tunnel at the request of the Army Air Corps to determine the effect of retractable landing gear openings in the bottom surface of a wing upon the characteristics of a Lockheed Altair airplane. The tests were extended to include the determination of the lift and drag characteristics throughout the angle-of-attack range with the landing gear both retracted and extended. Covering the wheel openings in the wing with sheet metal when the wheels w… more
Date: March 1933
Creator: DeFrance, Smith J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Aerodynamic Forces and Moments Exerted on a Spinning Model of the NY-1 Airplane as Measured by the Spinning Balance

Description: From Summary: "A preliminary investigation of the effects of changes in the elevator and rudder settings and of small changes in attitude upon the aerodynamic forces and moments exerted upon a spinning airplane was undertaken with the spinning balance in the 5-foot vertical tunnel of the National Advisory Committee for Aeronautics. The tests were made on a 1/12-scale model of the "NY-1" airplane. Data by which to fix the attitude, the radius of spin, and the rotational and air velocities were t… more
Date: February 7, 1933
Creator: Bamber, M. J. & Zimmerman, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerodynamic tests of a low aspect ratio tapered wing with various flaps, for use on tailless airplanes

Description: From Introduction: "The tests described in this report are the first in an investigation by N.A.C.A. of the aerodynamic characteristics of possible tailless arrangements. The investigations will be extended to include whatever range is through most desirable and may include, among other things, variations in aspect ratio, taper, sweepback, washout, air-foil section, dihedral, and also control flaps or other control devices of different forms and proportions."
Date: June 1933
Creator: Weick, Fred E. & Sanders, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aircraft Power-Plant Instruments

Description: From Summary: "The report includes a description of the commonly used types and some others, the underlying principle utilized in the design, and some design data. The inherent errors of the instrument, the methods of making laboratory tests, descriptions of the test apparatus, and data in considerable detail in the performance of commonly used instruments are presented. Standard instruments and, in cases where it appears to be of interest, those used as secondary standards are described."
Date: May 31, 1933
Creator: Sontag, Harcourt & Brombacher, W. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aircraft speed instruments

Description: From Summary: "This report presents a concise survey of the measurement of air speed and ground speed on board aircraft. Special attention is paid to the Pitot-static air-speed meter which is the standard in the United States for airplanes. A bibliography on air-speed measurement concludes the report."
Date: 1933
Creator: Beij, K. Hilding
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An airfoil spanning an open jet

Description: From Summary: "The first part of the report treats of the theory involved. The second part describes the experiments performed for the purpose of proving the theory."
Date: September 1933
Creator: Stüper, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Annual Report of the National Advisory Committee for Aeronautics (18th). Administrative Report Including Technical Report Nos. 401 to 440

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: 1933
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of Practical Hydrodynamics to Airship Design

Description: The purpose of the first two parts of this report is to present in concise format all the formulas required for computation of the hydrodynamic forces, so that they can be easily computed for either straight or curvilinear flight. Improved approximations are also introduced having a high degree of accuracy throughout the entire range of practical proportions. The remaining two parts of the report are devoted respectively to stability and skin friction, as functions of the same hydrodynamic forc… more
Date: 1933
Creator: Upson, Ralph H. & Klikoff, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Attaining a Steady Air Stream in Wind Tunnels

Description: "Many experimental arrangements of varying kind involve the problems of assuring a large, steady air stream both as to volume and to time. For this reason a separate discussion of the methods by which this is achieved should prove of particular interest. Motors and blades receive special attention and a review of existent wind tunnels is also provided" (p. 1).
Date: October 1933
Creator: Prandtl, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

The Aunts

Description: No Description Available.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 1933
Creator: Castellanos, Julio
Item Type: Refine your search to only Artwork
Partner: UNT College of Visual Arts + Design

[Automobile parked outdoors]

Description: Photograph of an automobile parked outdoors in the dirt, amongst the brush. This automobile has a long front end, with two doors and small windows. Another parked automobile can be seen in the background which appears to be a sports utility vehicle.
Date: [1933..1940]
Creator: Williams, Byrd M. (Byrd Moore), III
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

Banana Flower

Description: Grey scale study of a banana flower.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 1933
Creator: O'Keeffe, Georgia
Item Type: Refine your search to only Artwork
Partner: UNT College of Visual Arts + Design
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