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Flight Measurements of Lift and Drag for the Bell X-1 Research Airplane Having a 10-Percent-Thick Wing
Report presenting drag coefficients during power-off transonic flight for the Bell X-1 airplane with a 10-percent-thick wing over a range of Mach numbers and pressure altitudes. The data was compared to an X-1 with an 8-percent-thick wing and a wind tunnel test with a 10-percent-thick wing. Information about necessary angle of attack, drag-rise Mach number, maximum lift-drag ratio, and drag coefficient at zero lift is provided.
Date:
September 3, 1953
Creator:
Saltzman, Edwin J.
System:
The UNT Digital Library
Application of several methods for determining transfer functions and frequency response of aircraft from flight data
Report presenting an investigation of the methods of analyzing longitudinal frequency-response characteristics of aircraft. The methods considered are analysis of sinusoidal response, analysis of transient response to harmonic content through determination of the Fourier integral, and analysis of the transient through the use of least-squares solutions of the coefficients of an assume equation for the transient time or frequency response.
Date:
September 1953
Creator:
Eggleston, John M. & Mathews, Charles W.
System:
The UNT Digital Library
Reconnaissance Investigations for Uranium in Black Shale Deposits of the Western States during 1951 and 1952
Report discussing investigations seeking uranium in deposits of black shale around the geographical areas of the Western States
Date:
September 1953
Creator:
Duncan, Donald Cave
System:
The UNT Digital Library
Transonic Aerodynamic Characteristics of an NACA 64A006 Airfoil Section With a 15-Percent-Chord Leading-Edge Flap
Report presenting information about airfoil section normal-force, drag, pitching-moment, flap-normal-force, and hinge-moment characteristics at Mach numbers from 0.5 to 1.0 on an NACA 64A006 airfoil with 15-percent-chord leading-edge flap. Differing results were noted in the Mach ranges of 0.5 to 0.8 and over 0.8.
Date:
September 1, 1953
Creator:
Humphreys, Milton D.
System:
The UNT Digital Library
A Systematic Radioactivity Reconnaissance of Part of the North Gilpin County Mining District, Colorado
From introduction: The purpose of the investigation was to attempt to correlate anomalous radioactivity and mineral distribution in a metal-mining district that shows a distinct areal pattern of distribution of vein types,
Date:
September 1953
Creator:
Campbell, Russell H. & Schafer, Max
System:
The UNT Digital Library
The Uranium-Bearing Nickel-Cobalt-Native Silver Deposits in the Black Hawk District, Grant County, New Mexico
Report discussing geological investigations of the uranium-bearing nickel-cobalt-native silver deposits in the Black Hawk district of Grant County, New Mexico. Details of the area's geology are presented, and topographic and geologic maps are presented.
Date:
September 1953
Creator:
Gillerman, Elliot & Whitebread, Donald H.
System:
The UNT Digital Library
Uranium-Bearing Nickel-Cobalt-Native Silver Deposits, Black Hawk District, Grant County, New Mexico
From introduction: Mining began in the Black Hawk (Bullard Peak) district in 1881 when high-grade silver ore was found at the Alhambra mine. Most of the silver produced was native silver, associated with nickel and cobalt arsenides and sulfides. In 1920 pitchblende was recognized on the dumps of some of the old mines, and since 1949 the district has been of interest as a possible source of ores that contain uranium, nickel, and cobalt.
Date:
September 1953
Creator:
Gillerman, Elliot, 1913-1974 & Whitebread, Donald Harvey, 1926-
System:
The UNT Digital Library