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 Collection: Technical Report Archive and Image Library
Small-scale transonic investigation of the effects of full-span and partial-leading-edge flaps on the aerodynamic characteristics of a 50 degree 38 foot sweptback wing of aspect ratio 2.98

Small-scale transonic investigation of the effects of full-span and partial-leading-edge flaps on the aerodynamic characteristics of a 50 degree 38 foot sweptback wing of aspect ratio 2.98

Date: July 16, 1952
Creator: Spreeman, Kenneth P & Alford, William J , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Small-Scale Transonic Investigation of the Effects of Partial-Span Leading-Edge Camber on the Aerodynamic Characteristics of a 50 Deg 38' Sweptback Wing of Aspect Ratio 2.98

Small-Scale Transonic Investigation of the Effects of Partial-Span Leading-Edge Camber on the Aerodynamic Characteristics of a 50 Deg 38' Sweptback Wing of Aspect Ratio 2.98

Date: June 23, 1952
Creator: Alford, William J., Jr. & Byrnes, Andrew L., Jr.
Description: A small-scale transonic investigation of two semispan wings of the same plan form was made in the Langley high-speed 7- by 10-foot tunnel through a Mach number range of 0.70 to 1.10 and a mean-test Reynolds number range of 745,000 to 845,000 to determine the effects of partial-span leading-edge camber on the aerodynamic characteristics of a swept-back wing. This paper presents the results of the investigation of wing-alone and wing-fuselage configurations of the two wings; one, was an uncambered wing and the other had the forward 45 percent of the chord cambered over the outboard 55 percent of the span. The semispan wings had 50deg 38ft sweepback of their quarter-chord lines, aspect ratio of 2.98, taper ratio of 0.45, and modified NACA 64A-series airfoil sections tapered in thickness ratio. Lift, drag, pitching moment, and root-bending moment were obtained for these configurations. The results indicated that, for the wing-alone configuration, use of the partial-span leading-edge camber provided an increase in maximum lift-drag ratios up to a Mach number of 0.95, after which no gain was realized. For the wing-fuselage combination, the partial-span leading-edge camber appeared to cause no gain in maximum lift-drag ratio throughout the test range of Mach numbers. The ...
Contributing Partner: UNT Libraries Government Documents Department
Small-scale transonic investigation of the effects of twist and camber on the aerodynamic characteristics of a 60 degrees 42' sweptback wing of aspect ratio 1.94

Small-scale transonic investigation of the effects of twist and camber on the aerodynamic characteristics of a 60 degrees 42' sweptback wing of aspect ratio 1.94

Date: January 10, 1952
Creator: Spreemann, Kenneth P & Alford, William J , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The small wind tunnel of the DVL

The small wind tunnel of the DVL

Date: January 1, 1934
Creator: Seewald, Friedrich
Description: A general description of the small DVL wind tunnel is provided, with emphasis on air conduction, blower and velocity regulation, velocity measurement, and balance and model suspension.
Contributing Partner: UNT Libraries Government Documents Department
The Smelting of Copper Ores in the Electric Furnace

The Smelting of Copper Ores in the Electric Furnace

Date: 1915
Creator: Lyon, Dorsey A. & Keeney, Robert M.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Smelting Ores in the Electric Furnace

Smelting Ores in the Electric Furnace

Date: October 1937
Creator: Dean, Reginald S. & von Bernewitz, M. W.
Description: Report issued by the U.S. Bureau of Mines discussing the electric smelting of nonferrous ores. As stated in the introduction, "it is the purpose of the present paper to survey the technical and economic changes that have taken place and to determine whether electric smelting of nonferrous ores offers any more promise today than 20 years ago" (p. 1). This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
The Smoke Problem at Boiler Plants, A Preliminary Report

The Smoke Problem at Boiler Plants, A Preliminary Report

Date: 1912
Creator: Randall, D. T.
Description: Report concerning the rise in the usage of coal and the growing pollution of coal smoke. Includes the ordinances of several cities that arose to combat this pollution.
Contributing Partner: UNT Libraries Government Documents Department
Smoke studies of secondary flows in bends, tandem cascades, and high-turning configurations

Smoke studies of secondary flows in bends, tandem cascades, and high-turning configurations

Date: March 11, 1953
Creator: Hansen, Arthur G; Costello, George R & Herzig, Howard Z
Description: Flow-visualization studies, using smoke, were made of the secondary flows in rectangular bends, tandem cascades, and high-turning configurations. The roll-up of the wall boundary layer of a rectangular bend forms a passage vortex near the suction surface similar to that previously observed for cascades. The vortex so formed then shifts out into the main stream. Because of leading-edge effects, the boundary-layer flows in bends were found to be sufficiently different from the flows in blade rows to make direct application of bend results to blade rows inadvisable. Passage vortices are shown, in the tandem-cascade study, to resist turning with the main stream through which they pass and to disturb the flow in subsequent blade rows. This disturbance may explain in part the appreciable size of the losses sometimes attributed to secondary flows in turbomachines despite the fact that the energy involvement in vortex formation is slight. Tip-flow studies of high-turning blades with relative motion between blades and end wall indicated that if the relative sizes of the passage vortex forces, the tip clearance forces, and the blade-scraping effects are properly controlled, it may be possible to improve the blade-tip loading characteristics in turbomachine.
Contributing Partner: UNT Libraries Government Documents Department
Smoke study of nozzle secondary flows in a low-speed turbine

Smoke study of nozzle secondary flows in a low-speed turbine

Date: November 1, 1954
Creator: Kofskey, Milton G & Allen, Hubert W
Description: Still and motion pictures were made of boundary-layer and wake secondary-flow phenomena visualized by smoke. Two annular cascades of turbine nozzles were used, both designed for constant discharge angle but differing in blade shape and suction-surface velocity distribution. Flows were similar to those obtained with pressure and angle measurements at near-sonic airspeeds. Boundary-layer cross-channel and trailing-edge radial flows caused vortices and an accumulation of low-momentum air at the hub, which may affect flow in following blade rows. Motion of a downstream rotor blade row produced pulsations in trailing-edge radial flow. The motion-picture supplement may be obtained on loan from NACA Headquarters, Washington, D.C.
Contributing Partner: UNT Libraries Government Documents Department
The Smokeless Combustion of Coal in Boiler Furnaces

The Smokeless Combustion of Coal in Boiler Furnaces

Date: 1912
Creator: Randall, D. T. & Weeks, H. W.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Smoking characteristics of various fuels as determined by open-cup and laboratory-burner smoke tests

Smoking characteristics of various fuels as determined by open-cup and laboratory-burner smoke tests

Date: September 1, 1945
Creator: Barnett, Henry C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Smooth-Water Landing Stability and Rough-Water Landing and Take-Off Behavior of a 1/13-Scale Model of the Consolidated Vultee Skate 7 Seaplane, TED No. NACA DE 338

Smooth-Water Landing Stability and Rough-Water Landing and Take-Off Behavior of a 1/13-Scale Model of the Consolidated Vultee Skate 7 Seaplane, TED No. NACA DE 338

Date: September 8, 1949
Creator: McKann, Robert F.; Coffee, Claude W. & Arabian, Donald D.
Description: A model of the Consolidated Vultee Aircraft Corporation Skate 7 seaplane was tested in Langley tank no. 2. Presented without discussion in this paper are landing stability in smooth water, maximum normal accelerations occurring during rough-water landings, and take-off behavior in waves.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.1

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.1

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.2

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.2

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.3 Chromel-Alumel Thermocouples

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.3 Chromel-Alumel Thermocouples

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.4

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.4

Date: 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.5

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.5

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.6

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.6

Date: 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.7

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.7

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.8

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.8

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.9

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.9

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.10

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.10

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.11

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.11

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department
Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.12 Alumel-Chromel Cryogenic Thermocouple

Smoothed Thermocouple Tables of Extended Significance (°C), Volume 2: Section 2.12 Alumel-Chromel Cryogenic Thermocouple

Date: March 1965
Creator: Adams, R. K. & Davisson, E. G.
Description: This report is a segment providing smoothed thermocouple tables of extended significance in degrees Celsius (°C) for [section name]. It includes [1] a figure illustrating the difference in microvolts between the values in the smoothed table and those in the reference table and [2] a reference table containing (i) a tabulation of smoothed emf (in absolute millivolts) vs. temperature for a specific thermocouple and (ii) a tabulation of emf differences.
Contributing Partner: UNT Libraries Government Documents Department