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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Sources of Limestone, Gypsum, and Anhydrite for Dusting Coal Mines to Prevent Explosions

Sources of Limestone, Gypsum, and Anhydrite for Dusting Coal Mines to Prevent Explosions

Date: 1925
Creator: Bowles, Oliver
Description: None
Contributing Partner: UNT Libraries Government Documents Department
South Loop New Town Urban Pollutant Study: Status Report. Comparison of Two Proposed Franklin St. Connector Alternatives

South Loop New Town Urban Pollutant Study: Status Report. Comparison of Two Proposed Franklin St. Connector Alternatives

Date: 1975
Creator: Santini, Danillo J.
Description: Preliminary results are given of a study of probable carbon monoxide pollution concentrations in the South Loop area that may arise from either of two alternative Franklin Street Connector plans proposed by the Chicago Bureau of Street Traffic and by Alan M. Voorhees and Associates.
Contributing Partner: UNT Libraries Government Documents Department
Southwest Experimental Fast Oxide Reactor Development Program: First Quarterly Report, April-June 1964

Southwest Experimental Fast Oxide Reactor Development Program: First Quarterly Report, April-June 1964

Date: July 1964
Creator: Horst, K. M.
Description: From abstract: "This report summarizes the work performed on the Research and Development Program for the Southwest Experimental Fast Oxide Reactor."
Contributing Partner: UNT Libraries Government Documents Department
The Soviet Seven-Year Plan (1959-65) for Oil

The Soviet Seven-Year Plan (1959-65) for Oil

Date: 1961
Creator: Frendzel, Donald J.
Description: Report issued by the Bureau of Mines discussing the Soviet plan to increase oil production between 1959 and 1965. As stated in the introduction, "this report, based almost entirely on Soviet petroleum literature, describes the planned expansion of the U.S.S.R. petroleum industry and attempts to provide some idea of the magnitude of future Soviet oil exports" (p. 2). This report includes tables, and a map.
Contributing Partner: UNT Libraries Government Documents Department
Space Groups and Lattice Complexes

Space Groups and Lattice Complexes

Date: May 1973
Creator: Fisher, Werner; Burzlaff, Hans; Hellner, Erwin & Hellner, Erwin
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Space heating rates for some premixed turbulent propane-air flames

Space heating rates for some premixed turbulent propane-air flames

Date: June 1, 1956
Creator: Fine, Burton D & Wagner, Paul
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The spacing of orifices for the measure of pressure distributions

The spacing of orifices for the measure of pressure distributions

Date: January 1, 1926
Creator: Munk, Max M
Description: The following report has been prepared for publication by the NACA. Suitable locations of orifices for the measurement of pressure distributions have been discussed. Tables are given for quickly laying out these locations and for quickly and easily computing the resultant air forces from the result of the measurements.
Contributing Partner: UNT Libraries Government Documents Department
The span as a fundamental factor in airplane design

The span as a fundamental factor in airplane design

Date: September 1, 1928
Creator: Lachmann, G
Description: Previous theoretical investigations of steady curvilinear flight did not afford a suitable criterion of "maneuverability," which is very important for judging combat, sport and stunt-flying airplanes. The idea of rolling ability, i.e., of the speed of rotation of the airplane about its X axis in rectilinear flight at constant speed and for a constant, suddenly produced deflection of the ailerons, is introduced and tested under simplified assumptions for the air-force distribution over the span. This leads to the following conclusions: the effect of the moment of inertia about the X axis is negligibly small, since the speed of rotation very quickly reaches a uniform value.
Contributing Partner: UNT Libraries Government Documents Department
Span-load distribution as a factor in stability in roll

Span-load distribution as a factor in stability in roll

Date: January 1, 1932
Creator: Knight, Montgomery & Noyes, Richard W
Description: This report gives the results of pressure-distribution tests made to study the effects on lateral stability of changing the span-load distribution on a rectangular monoplane wing model of fairly thick section. Three methods of changing the distribution were employed: variation in profile along the span to a thin symmetrical section at the tip, twist from +5 degrees to -15 degrees at the tip, and sweepback from +20 degrees to -20 degrees. The tests were conducted in a 5-foot closed-throat atmospheric wind tunnel. The investigation shows the following results: (1) change in profile along the span from the NACA-84 at the root to the NACA-M2 at the tip considerably reduces lateral instability, but also reduces the general effectiveness of the wing. (2) washout up to 11 degrees progressively reduces maximum lateral instability. (3) transition from sweepforward to sweepback gradually reduces the useful angle-of-attack range, but has no clearly defined effect on maximum lateral instability.
Contributing Partner: UNT Libraries Government Documents Department
Span load distribution for tapered wings with partial-span flaps

Span load distribution for tapered wings with partial-span flaps

Date: January 1, 1937
Creator: Pearson, H A
Description: Tables are given for determining the load distribution of tapered wings with partial-span flaps placed either at the center or at the wing tips. Seventy-two wing-flap combinations, including two aspect ratios, four taper ratios, and nine flap lengths, are included. The distributions for the flapped wing are divided into two parts, one a zero lift distribution due primarily to the flaps and the other an additional lift distribution due to an angle of attack of the wing as a whole. Comparison between theoretical and experimental results for wings indicate that the theory may be used to predict the load distribution with sufficient accuracy for structural purposes.
Contributing Partner: UNT Libraries Government Documents Department