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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Collection: National Advisory Committee for Aeronautics Collection
Investigations on reductions of friction on wings, in particular by means of boundary layer suction

Investigations on reductions of friction on wings, in particular by means of boundary layer suction

Date: August 1, 1947
Creator: Pfenninger, W.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigations relating to the extension of laminar flow by means of boundary-layer suction through slots

Investigations relating to the extension of laminar flow by means of boundary-layer suction through slots

Date: October 1, 1949
Creator: Loftin, L. K., Jr.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
AVA monographs.  B:  Boundary layer

AVA monographs. B: Boundary layer

Date: April 1, 1948
Creator: Holstein, H.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Moments of cambered round bodies

Moments of cambered round bodies

Date: August 1, 1949
Creator: Kempf, Gunther
Description: Results are presented for the moments and position of force centers of a series of cambered round bodies derived from a torpedo-like body of revolution. The effects of placing fins on the rear of the body of revolution are also included.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of circular shell-supported frames

Analysis of circular shell-supported frames

Date: May 1, 1944
Creator: Wignot, J. E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the behavior of parallel two-dimensional air jets

Investigation of the behavior of parallel two-dimensional air jets

Date: November 1, 1944
Creator: Corrsin, Stanley
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the Kingfisher XAUM-2 Flying Torpedo in the Langley Full Scale Tunnel, Ted No. NACA DE 327

Investigation of the Kingfisher XAUM-2 Flying Torpedo in the Langley Full Scale Tunnel, Ted No. NACA DE 327

Date: October 6, 1949
Creator: Barnett, U. R.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of Aerodynamic and Icing Characteristics of Recessed Fuel-Vent Configurations

Investigation of Aerodynamic and Icing Characteristics of Recessed Fuel-Vent Configurations

Date: March 1, 1949
Creator: Ruggeri, Robert S.
Description: An investigation has been conducted in the NACA Cleveland icing research tunnel to determine the aerodynamic and icing characteristics of several recessed fuel-vent configurations. The vents were investigated aerodynamically to obtain vent-tube pressures and pressure distributions on the ramp surface as functions of tunnel-air velocity and angle of attack. Icing investigations were made to determine the vent-tube pressure losses for several icing conditions at tunnel-air velocities ranging from 220 to 440 feet per second. In general, under nonicing conditions, the configurations with diverging ramp walls maintained, vent-tube pressures greater than the required marginal value of 2 inches of water positive pressure differential between the fuel cell and the compartment containing the fuel cell for a range of angles of attack from 0 to 14deg at a tunnel-air velocity of approximately 240 feet per second. A configuration haying divergIng ramp sldewalls, a 7deg ramp angle; and vent tubes manifold,ed to a common plenum chamber opening through a slot In the ramp floor gave the greatest vent-tube pressures for all the configurations investigated. The use of the plenum chamber resulted in uniform pressures in all vent tubes. In a cloud-icing condition, roughness caused by ice formations on the airfoil surface ahead of ...
Contributing Partner: UNT Libraries Government Documents Department
The column strength of aluminum alloy 75S-T extruded shapes

The column strength of aluminum alloy 75S-T extruded shapes

Date: January 1, 1946
Creator: Holt, Marshall
Description: Because the tensile strength and tensile yield strength of alloy 75S-T are appreciably higher than those of the materials used in the tests leading to the use of the straight-line column curve, it appeared advisable to establish the curve of column strength by test rather than by extrapolation of relations determined empirically in the earlier tests. The object of this investigation was to determine the curve of column strength for extruded aluminum alloy 75S-T. In addition to three extruded shapes, a rolled-and-drawn round rod was included. Specimens of various lengths covering the range of effective slenderness ratios up to about 100 were tested.
Contributing Partner: UNT Libraries Government Documents Department
Stress analysis of columns and beam columns by the photoelastic method

Stress analysis of columns and beam columns by the photoelastic method

Date: March 1, 1946
Creator: Ruffner, B F
Description: Principles of similarity and other factors in the design of models for photoelastic testing are discussed. Some approximate theoretical equations, useful in the analysis of results obtained from photoelastic tests are derived. Examples of the use of photoelastic techniques and the analysis of results as applied to uniform and tapered beam columns, circular rings, and statically indeterminate frames, are given. It is concluded that this method is an effective tool for the analysis of structures in which column action is present, particularly in tapered beam columns, and in statically indeterminate structures in which the distribution of loads in the structures is influenced by bending moments due to axial loads in one or more members.
Contributing Partner: UNT Libraries Government Documents Department
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