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100 Areas technical activities report -- Physics, November 1951

Description: Activities discussed in this report are as follows: shielding studies; xenon generator; assay of xenon sample counting techniques; crystal diffraction neutron spectrometer; C{sup 12} cross sections measurements; magnetic spectrometer; scintillation spectroscopy; improved pile structure; criticality for the untamped 16 inch spherical reactor; exponential experiments; large scale pile structure; and operational pile physics.
Date: December 6, 1951
Item Type: Refine your search to only Report
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Altitude investigation of 16 flame-holder and fuel-system configurations in tail-pipe burner

Description: From Introduction: "The data obtained for each configuration are presented in a manner to show the effects of fuel distribution and flame-holder design on net thrust, specific fuel consumption, exhaust-gas temperature, combustion efficiency, operable range of tail-pipe-burner fuel-air ratios, and maximum altitude limit."
Date: December 12, 1951
Creator: Grey, Ralph E.; Krull, H. G. & Sargent, A. F.
Item Type: Refine your search to only Report
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Altitude Wind Tunnel Investigation of the Performance of Compressor, Combustor, and Turbine Components of Prototype J47D (RX1-1) Turbojet Engine

Description: "As a portion of an over-all performance investigation of the prototype J47D (RX-1) turbojet engine, performance of the compressor, combustor, and turbine components has been determined in the Lewis altitude wind tunnel over a range of altitude from 5000 to 55,000 feet and at flight Mach numbers from 0.19 to 0.92. Investigations were conducted with the engine operating on an electronic control schedule and slow with a two-lever control system by which fuel flow and exhaust-nozzle area could be … more
Date: December 21, 1951
Creator: Farley, John M.
Item Type: Refine your search to only Report
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An analysis of flow in rotating passage of large radial-inlet centrifugal compressor at tip speed of 700 feet per second

Description: Report presenting an analysis of the flow in the rotating passages of a 48-inch diameter radial-inlet centrifugal impeller at a tip speed of 700 feet per second in order to provide more information on the flow conditions within the impeller. Results regarding the impeller and diffuser performance, design flow characteristics, and off-design flow characteristics are provided.
Date: December 1951
Creator: Prian, Vasily D. & Michel, Donald J.
Item Type: Refine your search to only Report
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An analytical investigation using aerodynamic limitations of several designs of high stage pressure ratio multistage compressors

Description: From Introduction: "As more quantitative information becomes available, more will be known of the maximum stage total-pressure ratios that can be used while maintaining acceptable efficiences and weight flows. Because quantitative knowledge is limited, the qualitative nature of limiting factors and trends are investigated herein."
Date: December 1951
Creator: Voit, Charles H. & Thomson, Arthur R.
Item Type: Refine your search to only Report
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Application of the Von Kármán momentum theorem to turbulent boundary layers

Description: Report presenting a study of the Von Kármán momentum theorum with respect to its application to turbulent boundary layers in a positive pressure gradient. The results indicate that the streamwise derivative of the turbulent longitudinal momentum may be large near the separation and therefore should be considered when the momentum theorum is used for turbulent boundary layers near separation.
Date: December 1951
Creator: Bidwell, Jerold M.
Item Type: Refine your search to only Report
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Approximate methods for calculating the flow about nonlifting bodies of revolution at high supersonic airspeeds

Description: Explicit expressions are developed which yield the Mach number and pressure distributions on the surfaces of pointed nonlifting bodies of revolution operating at high supersonic airspeeds and at values of the hypersonic similarity parameter (ratio of free-stream Mach number to slenderness ratio) greater than 1. Very simple explicit expressions are obtained for these distributions in the special case of slender bodies. In the case of cones, the analytic solutions accurately define the entire flo… more
Date: December 1951
Creator: Eggers, A. J., Jr. & Savin, Raymond C.
Item Type: Refine your search to only Report
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Arrangement of Bodies of Revolution in Supersonic Flow to Reduce Wave Drag

Description: "The wave drag of a combination of slender bodies of revolution at zero angle of attack is studied with a view to determining the arrangements for which the total drag is a minimum. Linearized theory is used to calculate the pressure distribution in the field surrounding the bodies. The interference drag coefficient is computed for different arrangements. The special cases of two bodies and of a three-body combination with bilateral symmetry are considered" (p. 1).
Date: December 17, 1951
Creator: Friedman, Morris D.
Item Type: Refine your search to only Report
open access

Arrangement of Bodies of Revolution in Supersonic Flow to Reduce Wave Drag

Description: "The wave drag of a combination of slender bodies of revolution at zero angle of attack is studied with a view to determining the arrangements for which the total drag is a minimum. Linearized theory is used to calculate the pressure distribution in the field surrounding the bodies. The interference drag coefficient is computed for different arrangements" (p. 1).
Date: December 17, 1951
Creator: Friedman, Morris D.
Item Type: Refine your search to only Report
open access

Boiling Reactors: A Preliminary Investigation

Description: Technical report detailing kinetic equations that have been developed for a boiling-type reactor and inherent reactor stability studies that have been made on the basis of these equations. Presents features of the proposed reactor, comparisons of circulating types, investigations of bubble-rise velocities, effects of transient conditions of vapor mass in steam chest, and bubble time delay functions yield favorable results. [From Abstract]
Date: December 12, 1951
Creator: Stein, J. M. & Kasten, P. R.
Item Type: Refine your search to only Report
open access

Comparison of drag, pressure recovery, and surface pressure of a scoop-type inlet and an NACA submerged inlet at transonic speeds

Description: Report presenting an investigation of a solid half body modified to mount a scoop inlet and a submerged inlet while maintaining the same entrance geometry, afterbody, and diffuser for both inlets. Comparative pressure-recovery, pressure-distribution, and drag data were obtained for the two inlet types.
Date: December 17, 1951
Creator: Frank, Joseph L. & Taylor, Robert A.
Item Type: Refine your search to only Report
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A Comparison of Predicted and Experimentally Determined Longitudinal Dynamic Responses of a Stabilized Airplane

Description: Report presenting predictions of the dynamic longitudinal stability of an airplane with autopilot and comaprisons with measured flight frequency and transient responses for three airspeeds and various autopilot settings of displacement and rate of displacement feedback. Results regarding the aircraft transfer function, autopilot frequency response, hinge moment, autopilot gearing, and autopilot-aircraft combination are provided.
Date: December 1951
Creator: Smaus, Louis H.; Gore, Marvin R. & Waugh, Merle G.
Item Type: Refine your search to only Report
open access

Comparison of Semispan and Full-Span Tests of a 47.5 Degrees Sweptback Wing With Symmetrical Circular-Arc Sections and Having Drooped-Nose Flaps, Trailing-Edge Flaps, and Ailerons

Description: Report presenting an investigation to compare the characteristics of a full-span and a semispan highly swept wing in order to evaluate the general validity of the semispan wing testing technique. Results regarding the lift, drag, and pitching-moment characteristics are provided.
Date: December 5, 1951
Creator: Lipson, Stanley & Barnett, U. Reed, Jr.
Item Type: Refine your search to only Report
open access

The Concentration of Deuterium by Chemical Exchange Between Hydrogen and Ammonia

Description: Technical report describing the results of the chemical reaction between potassium amide and liquid ammonia and the exchange of hydrogen between hydrogen gas and liquid ammonia. This report finds that the reactions may be sufficiently rapid to be useful for isotope separations on a larger scale.
Date: December 15, 1951
Creator: Perlman, M. L. & Bigeleisen, J.
Item Type: Refine your search to only Report
open access

Concerning the Flow About Ring-Shaped Cowlings Part 6: Further Measurements on Inlet Devices

Description: "The present report presents as a supplement to the fourth report (available as ATI 5045, Air Materiel Command) in the series of investigations concerning the flow about ring-shaped cowlings further wind-tunnel measurements on inlet devices which are to show the influence of the radius of the nose of the cowling on the flow conditions. Moreover, a simple rule for the design of such arrangements, containing a hub in the interior, is suggested" (p. 1).
Date: December 1951
Creator: Küchemann, Dietrich & Weber, Johanna
Item Type: Refine your search to only Report
open access

A correlation by means of transonic similarity rules of experimentally determined characteristics of a series of symmetrical and cambered wings of rectangular plan form

Description: Transonic similarity rules are applied to the correlation of experimental data for a series of related rectangular wings of varying aspect ratio, thickness, and camber. The data correlation is presented in two parts: the first part presents the correlation for a series of 22 wings having symmetrical NACA 63a-series sections; the second part is concerned with a study of one type of camber by correlation of the data for a series of 18 cambered wings having NACA 63a2xx and 63a4xx sections.
Date: December 17, 1951
Creator: McDevitt, John B.
Item Type: Refine your search to only Report
open access

Correlation of Soil Properties with Geologic Information: Report Number 2, Correlation of Liquid Limit and Mechanical Analysis

Description: Introduction: The general project of correlating soil properties with geologic information and with simple soil index characteristics, one phase of which is described in this report, consists in comparing soil properties with soil types and with their geologic history and environment in order to determine what correlations are possible.
Date: December 1951
Creator: Waterways Experiment Station (U.S.)
Item Type: Refine your search to only Report
open access

Criterions for condensation-free flow in supersonic tunnels

Description: Report presenting the results of an investigation of water-vapor condensation shocks in the air passing through supersonic tunnels. Criterions for condensation-free flow are established by correlating experimental observations with the Volmer theory of nuclei formation. Results regarding the condensation-free criterions, scale effect, physical appearance of condensation shock, and practical considerations for tunnel design are provided.
Date: December 1951
Creator: Burgess, Warren C., Jr. & Seashore, Ferris L.
Item Type: Refine your search to only Report
open access

Critical Combinations of Bending, Shear, and Transverse Compressive Stresses for Buckling of Infinitely Long Flat Plates

Description: "Three-dimensional interaction surfaces are presented for the computation of elastic buckling stresses for an infinitely long flat plate subjected to combinations of bending, shear, and transverse compression in its plane - a loading approximating that occurring in a shear web. Surfaces are presented for two sets of edge conditions: both edges simply supported and lower edge simply supported, upper edge clamped. Present results are in good agreement with data for one-load and two-load limiting … more
Date: December 1951
Creator: Johnson, Aldie E., Jr. & Buchert, Kenneth P.
Item Type: Refine your search to only Report
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