Search Results

open access

Additional experimental heat-transfer and durability data on several forced-convection, air-cooled, strut-supported turbine blades of improved design

Description: Report presenting an investigation at the Lewis laboratory to develop air-cooled, strut-supported turbine blades. Six blades were investigated in a full-scale turbojet engine to obtain data on blade durability and blade-cooling effectiveness and strut temperature. Results regarding the heat-transfer investigation and blade-durability investigation are provided.
Date: January 19, 1955
Creator: Schum, Eugene F.
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic characteristics of NACA 0012 airfoil section at angles of attack from 0 degrees to 180 degrees

Description: Report presenting the aerodynamic characteristics of the NACA 0012 airfoil section at a range of angles of attack from 0 to 180 degrees. Data were obtained at two different Reynolds numbers depending on whether the airfoil surfaces were smooth or had roughness applied at the leading and trailing edges. After the stall with the rounded edge of the airfoil foremost, a second lift-coefficient peak was obtained at an angle of attack of about 45 degrees.
Date: January 1955
Creator: Critzos, Chris C.; Heyson, Harry H. & Boswinkle, Robert W., Jr.
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic Loading Characteristics in Sideslip of a 45 Degree Sweptback Wing With and Without a Fence at High Subsonic Speeds

Description: Report presenting an investigation of the effects of sideslip on the aerodynamic loading characteristics of a 45 degree sweptback wing of aspect ratio 4 for a range of angles of attack, angles of sideslip, and Mach numbers. The load distributions, root bending-moment coefficient, and rolling moment due to sidestep were explored.
Date: January 28, 1955
Creator: Kuhn, Richard E.
Partner: UNT Libraries Government Documents Department
open access

Airborne Reconnaissance Project, Green River Basin, Wyoming

Description: Abstract: A part of the Green River Basin airborne reconnaissance project, re: memo to Phillip L. Merritt, March 12, 1954, Proposed Airborne Reconnaissance Project, Green River Basin, Wyoming, was completed during the months from July though October 1954. No uranium mineralization of commercial value was found.
Date: January 1955
Creator: Magleby, Dan N. & Meehan, R. J.
Partner: UNT Libraries Government Documents Department
open access

Aircraft Reactor Test Hazards Summary Report

Description: The successful completion of a program of experiments, including the Aircraft Reactor Experiment (ARE), has demonstrated the high probability of producing militarily useful aircraft nuclear power plants employing reflector-moderated circulating-fuel reactors. Consequently, and accelerated program culminating in operation of the Aircraft Reactor Test (ART) is under way. In order to adhere to the compressed schedule of the accelerated program, it is essential that the Atomic Energy Commission app… more
Date: January 19, 1955
Creator: Cottrell, W. B.; Ergen, W. K.; Fraas, A. P.; McQuilkin, F. R. & Meem, J. L.
Partner: UNT Libraries Government Documents Department
open access

Altitude Component Performance of the YJ73-GE-3 Turbojet Engine

Description: Memorandum presenting an investigation to determine the altitude performance characteristics of the YJ73-GE-3 turbojet engine in an altitude chamber. The component performance was determined at two positions of the inlet guide vanes over a range of engine speeds, exhaust-nozzle areas, and flight conditions. Results regarding compressor performance, combustor performance, turbine performance, and altitude performance of components at rated conditions are provided.
Date: January 10, 1955
Creator: McAulay, John E. & Campbell, Carl E.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Borax Experiments

Description: An analysis of the self-limitation of power excursions by steam production in heterogeneous water-moderated reactors using MTR- type fuel elements seems to give excellent agreement with Borax data on both fuel plate temperature rise and total energy for excursions in which the reactor is initially at saturation temperature. A simple model for steam production is developed from thermodynamic and heat diffusion considerations. In those cases for which the reactor is substantially sub-cooled, it a… more
Date: January 1, 1955
Creator: Edlund, M.C. & Noderer, L.C.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Laminar Forced-Convection Heat Transfer in Entrance Region of Flat Rectangular Ducts

Description: From Introduction: "Beyond the position where the boundary layer treatment can no longer be used, curves have been faired to connect the Nusselt number results of the present analysis with those of reference 3, in which a parabolic velocity profile is assumed throughout the entire duct length. So that a comparison could be made with the results of reference 3, the boundary layer analysis was used to study the development of the temperature profile associated with a parabolic velocity profile th… more
Date: January 1955
Creator: Sparrow, E. M.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Limitations Imposed on One-Spool Turbojet-Engine Designs by Turbines Having Downstream Stators at 0, 2.0, and 2.8 Flight Mach Numbers

Description: Memorandum presenting an aerodynamic design-point analysis of one-spool turbojet engines with one-stage turbines with one and with two rows of downstream stator blades. The object of the analysis was to evaluate the design characteristics of the turbines in comparison with conventional one- and two-stage turbines, to determine the extent to which exit whirl can be increased before causing weight-flow capacity to decrease, and to determine the effect of downstream stators on engine design limita… more
Date: January 19, 1955
Creator: Cavicchi, Richard H. & Constantine, Anita B.
Partner: UNT Libraries Government Documents Department
open access

Analytical applications of refractive index

Description: Report detailing the refractive index of solutions of uranyl nitrate, nitric acid and aluminum nitrate. This report builds upon preliminary data and a brief discussion that from a previous report. This report covers more accurate and detailed data that had be accumulated following the initial report.
Date: January 9, 1955
Creator: Burger, L. L.
Partner: UNT Libraries Government Documents Department
open access

Application of wing-body theory to drag reduction at low supersonic speeds

Description: Report presenting a method for extending to higher Mach numbers the region of low drag attainable for wing-body combinations by the use of the transonic area rule. To a good approximation, the drag depends only on the longitudinal distributions of area and moments of area about the vertical plane of symmetry parallel to the free-stream direction. The experimental results confirm the theory in that the zero-lift wave drag of a wing-body configuration over a range of low supersonic Mach numbers.
Date: January 28, 1955
Creator: Baldwin, Barrett S., Jr. & Dickey, Robert R.
Partner: UNT Libraries Government Documents Department
open access

Charts for Estimating Performance of High-Performance Helicopters

Description: Note presenting theoretically derived charts showing the profile-drag-thrust ratio for a helicopter rotor operating in forward flight and with hinged rectangular blades with a linear twist of -8 degrees. The charts, which show the profile-drag characteristics of the rotor for various combinations of pitch angle, ratio of thrust coefficient to solidity, and a parameter representing shaft power input, are presented for tip-speed ratios ranging from 0.05 to 0.50.
Date: January 1955
Creator: Gessow, Alfred & Tapscott, Robert J.
Partner: UNT Libraries Government Documents Department
open access

Chrysotile-Asbestos Deposits of Arizona

Description: Report issued by the U.S. Bureau of Mines discussing asbestos mining and production in Arizona. As stated in the summary, "this paper describes most of the chrysotile-asbestos deposits of Arizona. Mining methods are discussed briefly and asbestos-mill flowsheets are incorporated" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: January 1955
Creator: Stewart, L. A.
Partner: UNT Libraries Government Documents Department
open access

Collected Reports on Fission Cross Sections of U237 in Thermal Neutron, Intermediate Neutron, and Degraded Fission Neutron Spectra

Description: Part 1. The neutron fission cross section of U237 has been measured in a thermal neutron spectrum and in a somewhat degraded fission spectrum. The fission cross section for thermal neutrons is found to be <2 barns; the ratio of the fission cross section of U237 to that of U235 in the degraded fission spectrum is found to be 0.476 +- 15% which corresponds to [formula] in this spectrum equal to 0.66 +- 0.10 barns. Part 2. The average neutron fission cross section of U237 has been measured in a ne… more
Date: January 1, 1955
Creator: Cowan, G. A. (George A.), 1920-2012
Partner: UNT Libraries Government Documents Department
open access

Component Performance Investigation of J71 Type II Turbines 3 - Overall Performance of J71 Type IIA Turbine

Description: "The over-all component performance characteristics of the J71 Type IIA three-stage turbine were experimentally determined over a range of speed and over-all turbine total-pressure ratio at inlet-air conditions af 35 inches of mercury absolute and 700 deg. R. The results are compared with those obtained for the J71 Type IIF turbine, which was previously investigated, the two turbines being designed for the same engine application. Geometrically the two turbines were much alike, having the same … more
Date: January 20, 1955
Creator: Schum, Harold J.; Davison, Elmer H. & Petrash, Donald A.
Partner: UNT Libraries Government Documents Department
open access

Continuous Denitration--Design Specification Letter No. 1

Description: Design and technical specifications are outlined for equipment designed for the continuous calcination of UNH to UO/sub 2/. (C.W.H.)
Date: January 1, 1955
Creator: Szulinski, M. J. & Geier, R. G.
Partner: UNT Libraries Government Documents Department
open access

Continuous Denitration Status of Development, January 12, 1955

Description: Experimental studies on continuous denitration performed in 321 Building resulted in the development of an agitated-through-type calciner. The performance of a paddle-agitated 4-in.-diameter by 44-in.-long reactor was sufficiently promising to warrant construction of a 16-in.-diameter by 8 ft.-long semi-plant scale model. This progress report summarizes the results of studies to date employing the semi-plant scale calciner.
Date: January 14, 1955
Creator: Szulinski, M. J.
Partner: UNT Libraries Government Documents Department
open access

Continuous effluent water high temperature monitor for B, C, D, DR, F, and H piles

Description: Continuous monitoring of the pile outlet water temperature may offer definite advantages from both the operating efficiency and pile safety points of view. The temperature data could be continuously displayed which would provide Operators with the kind of information required to operate efficiently while remaining within specified tube outlet water temperature limits, and permit tube outlet water temperatures to be continuously in the scram circuit, thus contributing to safety of operations. Th… more
Date: January 17, 1955
Creator: Paul, R. S. & Stephens, D. E.
Partner: UNT Libraries Government Documents Department
open access

A Cost Analysis of the Idaho Chemical Processing Plant

Description: A capital cost breakdown of the Idaho Chemical Processing Plant, a directly maintained remotely operated plant for processing spent enriched uranium fuel assemblies from reactors, is presented. The capital investment in the plant, including design, construction, training, and preoperational costs, an estimate of the direct costs incurred by the Atomic Energy Commission, and a proportional part of the costs of Central Facilities, including the value of the land and improvements theorem when acqu… more
Date: January 4, 1955
Creator: Robertson, P. L. & Stockdale, W. G.
Partner: UNT Libraries Government Documents Department
open access

Description and Analysis of a Rocket-Vehicle Experiment on Flutter Involving Wing Deformation and Body Motions

Description: Report presenting flight testing and a mathematical analysis to demonstrate and confirm a type of subsonic flutter involving rigid-body motions and wing deformations. The period of oscillation was approximately 100 chords per cycle, which is well within the range of period found in dynamic-stability work on rigid aircraft with free controls. Results regarding the Rayleigh-Ritz treatment in four degrees of freedom, effect of various binary and ternary combinations of freedoms, and effect of rela… more
Date: January 1955
Creator: Cunningham, H. J. & Lundstrom, R. R.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen