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The effect of nacelle-propeller diameter ratio on body interference and on propeller and cooling characteristics

Description: Report presents the results of an investigation conducted in the NACA 20-foot tunnel to determine the slipstream drag, the body interference, and the cooling characteristics of nacelle-propeller diameter. Four combinations of geometrically similar propellers and nacelles, mounted on standard wing supports, were tested with values of the ratio of nacelle diameter to propeller diameter of 0.25, 0.33, and 0.44.
Date: April 17, 1939
Creator: McHugh, James G. & Derring, Eldridge H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Photograph of individuals gathered in front of the Hollywood Theatre]

Description: Photograph of a crowd of individuals gathered in front of the entrance of the Hollywood Theatre in downtown Fort Worth. The crowd is standing under the theatre's bright marquee, which advertises the Southwestern Premiere of the film "In Old Chicago," featuring actress Alice Faye.
Date: March 17, 1938
Creator: Williams, Byrd M. (Byrd Moore), III
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Photograph of the Hollywood Theatre]

Description: Photograph of the Southwestern Premiere of the film, "In Old Chicago," in downtown Fort Worth at the Hollywood Theatre on March 17, 1938, taken from across the street. A crowd of individuals stands under the theatre's bright marquee, which advertises the film "In Old Chicago" that features actress Alice Faye. Automobiles drive down the street in the foreground.
Date: March 17, 1938
Creator: Williams, Byrd M. (Byrd Moore), III
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Pressure distribution over an NACA 23012 airfoil with a slotted and a plain flap

Description: Report presents the results of pressure-distribution of an NACA 23012 airfoil equipped with a slotted flap and with a plain flap conducted in the 7 by 10-foot wind tunnel. A test installation was used in which the 7-foot-span airfoil was mounted vertically between the upper and lower sides of the closed test section so that two-dimensional flow was approximated. The pressures were measured on the upper and lower surfaces at one chord section both on the main airfoil and on the flaps for several… more
Date: March 17, 1938
Creator: Wenzinger, Carl J. & Delano, James B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The experimental and calculated characteristics of 22 tapered wings

Description: From Summary: "The experimental and calculated aerodynamic characteristics of 22 tapered wings are compared, using tests made in the variable-density wind tunnel. The wings had aspect ratios from 6 to 12 and taper ratios from 1:6:1 and 5:1. The compared characteristics are the pitching moment, the aerodynamic-center position, the lift-curve slope, the maximum lift coefficient, and the curves of drag. The method of obtaining the calculated values is based on the use of wing theory and experiment… more
Date: November 17, 1937
Creator: Anderson, Raymond F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Letter from Margaret Mitchell to Paul Kruse, August 17, 1937]

Description: Letter from Margaret Mitchell to Paul Kruse written in response to a letter from Kruse. Mitchell states that she is enclosing materials that she hopes will be of interest to Kruse and his students and comments on the production of the film adaptation of Gone with the Wind. Mitchell says she is not involved with the production of the film but believes production will begin the following year. The letter is signed "Margaret Mitchell Marsh." The letterhead reads "Margaret Mitchell" in blue ink.
Date: August 17, 1937
Creator: Mitchell, Margaret, 1900-1949
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

An Analysis of Lateral Stability in Power-Off Flight With Charts for Use in Design

Description: "The aerodynamic and mass factors governing lateral stability are discussed and formulas are given for their estimation. Relatively simple relationships between the governing factors and the resulting stability characteristics are presented. A series of charts is included with which approximate stability characteristics may be rapidly estimated" (p. 1).
Date: November 17, 1936
Creator: Zimmerman, Charles H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Letter from Pedro J. Gonzalez's lawyer, Anna Zacsek, to the prison board]

Description: Letter from Pedro J. Gonzalez's lawyer, Anna Zacsek, to the board of prison terms and paroles regarding his case. A wide column of paragraphed text extends across the front and back of the page, ending above the text "sincerely" and "Anna Zacsek."
Date: September 17, 1936
Creator: Parlee, Lorena, 1945-2006 & Zacsek, Anna
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

A Theory for Primary Failure of Straight Centrally Loaded Columns

Description: "A theory of primary failure of straight centrally loaded columns is presented. It is assumed that the column cross section and the load are constant throughout the length. Primary failure is defined as any type of failure in which the cross sections are translated, rotated, or translated and rotated but not distorted in their own planes" (p. 141).
Date: August 17, 1936
Creator: Lundquist, Eugene E. & Fligg, Claude M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Noise From Two-Blade Propellers

Description: "The two-blade propeller, one of the most powerful sources of sound known, has been studied with the view of obtaining fundamental information concerning the noise emission. In order to eliminate engine noise, the propeller was mounted on an electric motor. A microphone was used to pick up the sound whose characteristics were studied electrically. The distribution of noise throughout the frequency range, as well as the spatial distribution about the propeller, was studied. The results are given… more
Date: January 17, 1935
Creator: Stowell, E. Z. & Deming, A. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Aerodynamic Analysis of the Autogiro Rotor With a Comparison Between Calculated and Experimental Results

Description: This report presents an extension of the autogiro theory of Glauert and Lock in which the influence of a pitch varying with the blade radius is evaluated and methods of approximating the effect of blade tip losses and the influence of reversed velocities on the retreating blades are developed. A comparison of calculated and experimental results showed that most of the rotor characteristics could be calculated with reasonable accuracy, and that the type of induced flow assumed has a secondary ef… more
Date: January 17, 1934
Creator: Wheatley, John B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tests of nacelle-propeller combinations in various positions with reference to wings 4: thick wing - various radial-engine cowlings - tandem propellers

Description: This report is the fourth of a series giving the results obtained from wind tunnel tests to determine the interference lift and drag and propulsive efficiency of wing-nacelle-propeller combinations. Previous reports give the results of tests with tractor propellers with various forms of nacelles and engine cowlings. This report gives the results of tests of tandem arrangements of engines and propellers in 11 positions with reference to a thick wing.
Date: January 17, 1934
Creator: McHugh, James G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Relation of Hydrogen and Methane to Carbon Monoxide in Exhaust Gases From Internal-Combustion Engines

Description: The relation of hydrogen and methane to carbon monoxide in the exhaust gases from internal-combustion engines operating on standard-grade aviation gasoline, fighting-grade aviation gasoline, hydrogenated safety fuel, laboratory diesel fuel, and auto diesel fuel was determined by analysis of the exhaust gases. Two liquid-cooled single-cylinder spark-ignition, one 9-cylinder radial air-cooled spark-ignition, and two liquid-cooled single-cylinder compression-ignition engines were used.
Date: August 17, 1933
Creator: Gerrish, Harold C. & Tessmann, Arthur M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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