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The Chelate Process: [Part] 5. Investigation in Horizontal Extractors

Description: The recovery of plutonium has been demonstrated in a laboratory countercurrent horizontal extractor using the TTA process. Using three extractive stages and two washing stages in each step, a recovery of 91 percent has been obtained in the chelation step and a recovery of 99.9+ percent in the de-chelation step. With five extractive stages, recoveries of 94-98 percent have been found for the chelation step.
Date: July 29, 1949
Creator: Hicks, T. E.; Rubin, B. & Vermeulen, T.
Partner: UNT Libraries Government Documents Department
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Dynamics of a turbojet engine considered as a quasi-static system

Description: From Summary: "A determination of the dynamic characteristics of a typical turbojet engine with a centrifugal compressor, a sonic-flow turbine-nozzle diaphragm, and fixed area exhaust nozzle is presented. A generalized equation for transient behavior of the engine was developed; this equation was then verified by calculations using compressor and turbine performance charts extrapolated from equilibrium operating data and by experimental data obtained from an engine operated under transients in … more
Date: July 27, 1949
Creator: Otto, Edward W. & Taylor, Burt L., III
Partner: UNT Libraries Government Documents Department
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Urine Analysis for Tritium Oxide

Description: This report analyzes a procedure based on the production of acetylene from the active water, with subsequent measurement of the ionization caused by the tritium beta particle. This eliminates the troublesome absorption on the chamber walls when hydrogen is used, and provides a rapid method for the preparation of the urine samples.
Date: July 27, 1949
Creator: Healy, J. W.
Partner: UNT Libraries Government Documents Department
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Urine Analysis for Tritium Oxide

Description: This paper describes a means of determining tritium oxides in urine relying upon the production of acetylene from the active water with subsequent measurement of the ionization caused by the tritium beta particle.
Date: July 27, 1949
Creator: Healy, J. W.
Partner: UNT Libraries Government Documents Department
open access

Progress Report: June 1949: Preparation of Ductile Zirconium

Description: Report discussing progress made in testing methods for preparation of ductile zirconium by the National Research Corporation for the month of June, 1949.
Date: July 26, 1949
Creator: DiPietro, W. O.; Findlay, G. R. & Mellen, G. L.
Partner: UNT Libraries Government Documents Department
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The application of the statistical theory of extreme values to gust-load problems

Description: From Introduction: "Recent developments in the statistical theory of extreme values (references 4 to 10) have indicated a somewhat more rational approach to the problem of predicting the probability of occurrence The present report summarizes some of these findings, indicates the method of application, and evaluates their applicability to certain gust-load problems ."
Date: July 22, 1949
Creator: Press, Harry
Partner: UNT Libraries Government Documents Department
open access

Effects of Some Airfoil-Section Variations on Wing-Aileron Rolling Effectiveness and Drag as Determined in Free Flight at Transonic and Supersonic Speeds

Description: Report presenting an investigation in free flight of the rolling effectiveness of plain ailerons in conjunction with wings having 0 and 45 degrees sweepback with several airfoil sections. Results regarding the rolling characteristics of rectangular and sweptback-wing configurations and drag measurements are provided.
Date: July 22, 1949
Creator: Sandahl, Carl A.; Bland, William M., Jr. & Strass, H. Kurt
Partner: UNT Libraries Government Documents Department
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High-Speed Wind-Tunnel Investigation of the Lateral Stability Characteristics of a 0.10-Scale Model of the Grumman XF9F-2 Airplane, TED No. NACA DE 301

Description: An investigation was made in the Langley high-speed 7- by 10-foot tunnel to determine the high-speed lateral and directional stability characteristics of a 0.10-scale model of the Grumman XF9F-2 airplane in the Mach number range from 0.40 to 0.85. The results indicate that static lateral and directional stability is present throughout the Mach number range investigated although in the Mach number range from 0.75 to 0.85 there is an appreciable decrease in rolling moment due to sideslip. Calcula… more
Date: July 22, 1949
Creator: Polhamus, Edward C. & King, Thomas J., Jr.
Partner: UNT Libraries Government Documents Department
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The Path of Carbon in Photosynthesis VII Respiration andPhotosynthesis

Description: The relationship of respiration to photosynthesis in barley seedling leaves and the algae, Chlorella and Scenedesmus, has been investigated using radioactive carbon dioxide and the techniques of paper chromatography and radioautography. The plants are allowed to photosynthesize normally for thirty seconds in c{sup 14}O{sub 2} after which they are allowed to respire in air or helium in the light or dark. Respiration of photosynthetic intermediates as evidenced by the appearance of labeled glutom… more
Date: July 21, 1949
Creator: Benson, A. A. & Calvin, M.
Partner: UNT Libraries Government Documents Department
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Aerodynamic characteristics of a wing with quarter-chord line swept back 45 degrees, aspect ratio 6, taper ratio 0.6, and NACA 65A009 airfoil section

Description: From Introduction: "This paper presents the results of the investigation of the wing-alone and wing-fuselage configurations employing a wing with the quarter-chord line swept back 45^o, aspect ratio 4, taper ratio 0.3, and an NACA 65A006 airfoil section parallel to the stream."
Date: July 20, 1949
Creator: Spreemann, Kenneth P.; Morrison, William D., Jr. & Pasteur, Thomas B., Jr.
Partner: UNT Libraries Government Documents Department
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Investigation of Low-Speed Aileron Control Characteristics at a Reynolds Number of 6,800,000 of a Wing With Leading Edge Swept Back 42 Degrees With and Without High-Lift Devices

Description: Report presenting an investigation at a Reynolds number of 6,800,000 to determine the low-speed lateral control characteristics of a 20-percent-chord half-span outboard aileron on a wing with 42 degrees of sweepback at the leading edge. The lateral control, aileron hinge-moment, aileron load, and balance-chamber-pressure characteristics were determined for the wing with and without high-lift and stall-control devices for an angle-of-attack range from -4 degrees through the stall.
Date: July 19, 1949
Creator: Bollech, Thomas V. & Pratt, George L.
Partner: UNT Libraries Government Documents Department
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Rate of Burnout of Absorbers

Description: Report discussing change in absorptivity of some rare earth elements over time.
Date: July 19, 1949
Creator: Gillette, P. R.
Partner: UNT Libraries Government Documents Department
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Thermal Stress Tests of KS Graphite

Description: A program was initiated to determine the thermal rupture characteristics of KS graphite under steady-state operating conditions simulating the thermal conditions of an uninhibited rocket reactor. The maximum thermal stress calculated using room-temperature properties was 3090 psi. The maximum net specific power obtained was 5.2 Btu/cu in.-sec. (B.O.G.)
Date: July 19, 1949
Creator: Crocker, A.R.
Partner: UNT Libraries Government Documents Department
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Investigation of Performance of Typical Inlet Stage of Multistage Axial-Flow Compressor

Description: Memorandum presenting an investigation of a typical inlet stage of a multistage axial-flow compressor that was designed on the basis of an analysis of basic design variables. The stage, consisting of 19 rotor blades and 20 stator blades with 40 inlet guide vanes, had a hub-to-tip-radius ratio at the rotor inlet of 0.50 and a rotor-blade outside diameter of 14 inches. Results regarding the overall compressor performance, comparison of compressor performance with design, and rotor-row performance… more
Date: July 18, 1949
Creator: Burtt, Jack R.
Partner: UNT Libraries Government Documents Department
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The Possibility of Enhanced Hg202 as a Source of Monochromatic Light

Description: This report discusses enhanced Hg202 as a source of monochromatic light in relation to the effects of the isotopic impurities.
Date: July 18, 1949
Creator: McNally, J. Rand, Jr.; Griffin, P. M. & Burkhart, L. E.
Partner: UNT Libraries Government Documents Department
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Preliminary experimental investigation of effects of aerodynamic shape of concentrated weights on flutter of a straight cantilever wing

Description: Report presenting the effect of flutter characteristics of variation on the aerodynamic shape of concentrated weights rigidly mounted on a simplified wing structure. Two general types of weights with similar mass and moment-of-inertia properties were employed. Results regarding effects of aerodynamic shape of concentrated weights, effects of spanwise variation of light concentrated weights, and effects of moment of inertia of light concentrated weights.
Date: July 18, 1949
Creator: Sewall, John L. & Woolston, Donald S.
Partner: UNT Libraries Government Documents Department
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Results obtained from second flight of X-4 airplane (A.F. no. 46-676)

Description: Report presenting testing in the X-4 airplane to obtain stability and control data. The flight was made with the center of gravity at 19.7 percent of the mean aerodynamic chord and with the rudder-boost system removed. The results showed that the longitudinal stability was positive in the clean condition and in the gear-down flaps-up condition.
Date: July 18, 1949
Creator: Williams, Walter C.
Partner: UNT Libraries Government Documents Department
open access

Two-dimensional wind tunnel investigation of a symmetrical airfoil section with a sealed internally balanced control surface and a leading tab

Description: Report presenting an investigation in the two-dimensional low-turbulence tunnel of a symmetrical airfoil section equipped with a 0.30-airfoil-chord sealed internally balanced flap with a 0.70-flap-chord overhang and a 0.33-flap-chord leading tab. Results regarding airfoil lift, surface pressure, flap hinge-moment, and flap-balance-chamber pressure characteristics at various flap deflections.
Date: July 18, 1949
Creator: Nuber, Robert J. & Fullmer, Felicien F., Jr.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of piston-type gas-generator engine for subsonic transport operation

Description: Report presenting an evaluation of a piston-type gas-generator engine by comparing the performance of a transport airplane powered with than engine with the same airplane powered by different engines. The engines compared were a turbojet engine, a turbine-propeller engine, a compound engine, and a turbosupercharged reciprocating engine utilizing a variable-area exhaust jet nozzle. Results regarding optimum altitude and transport performance are provided.
Date: July 15, 1949
Creator: Lietzke, A. F. & Henneberry, Hugh M.
Partner: UNT Libraries Government Documents Department
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