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Mineralogical Examination of Pitchblende Concentrates and Nitric Acid Digest Residues

Description: This report has two parts to it discussing mineralogical examination of pitchblende concentrates and nitric acid digest residues. Part I gives the results of a cursory examination with the petrographic microscope of samples of pitchblende concentrates and residues to see if there is a relationship between the mineral composition of the samples and the filterability of the residue. Part II gives a revaluation of the data in Report BMI-241 on the mineral composition of two residues from the nitri… more
Date: February 9, 1951
Creator: Scott, D. W.; Tangel, O. F. & Richardson, A. C.
Partner: UNT Libraries Government Documents Department
open access

Shielding Reactor Corrosion Studies

Description: Technical report outlining the investigation of corrosion on MTR type fuel elements for the Shielding Reactor in filtered water. Report includes two basic types of protection: element pretreatment by either anodizing or alodizing, and solution control using nitric acid to maintain a pH of 5.5 to 6.5 or the addition of 60 ppm sodium chromate as an inhibitor. [From Abstract]
Date: July 9, 1951
Creator: Olsen, Arnold R.
Partner: UNT Libraries Government Documents Department
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{open_quotes}O{close_quotes} ring sealed process tube, Phase II, test project

Description: The {open_quotes}O{close_quotes} ring seal has been proposed to replace the van stone flange and the bellows thermal expansion assembly currently used on the existing Hanford piles to achieve water and gas seals, respectively. Possible advantages of the {open_quotes}O{close_quotes} ring seal are: (1) simplification of component parts and elimination of van stone corrosion; (2) simplification of maintenance; (3) lower costs of initial erection; (4) increased strength. This test supplements Test … more
Date: April 9, 1951
Creator: Johnson, R. E.
Partner: UNT Libraries Government Documents Department
open access

Technical Progress Letter

Description: It was agreed at the February, 1951 meeting of the Atomic Energy Commission Technical Information Panel that, wherever practical, progress reports should periodically include a list of previous reports issued in the same series. Such a list would greatly facilitate servicing by installation document rooms since requests are frequently received for reports in a specific series. This report lists the Technical Progress Letters from 1944 to date, and is distributed to recipients of the Letters in … more
Date: October 9, 1951
Creator: Linkous, I. G.
Partner: UNT Libraries Government Documents Department
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Analysis of longitudinal stability and trim of the Bell X-1 airplane at a lift coefficient of 0.3 to Mach numbers near 1.05

Description: Report presenting flight test data obtained with two Bell X-1 airplanes, one with an 8-percent-thick wing and a 6-percent-thick tail and one with a 10-percent-thick wing and an 8-percent-thick tail. Data was obtained at a variety of Mach numbers, lift coefficients, and test altitudes. Results regarding stick-fixed stability and trim changes are provided.
Date: October 9, 1951
Creator: Drake, Hubert M.; Carden, John R. & Clagett, Harry P.
Partner: UNT Libraries Government Documents Department
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Free-spinning tunnel investigation of the 1/21-scale model of the Chance Vought F7U-3 airplane: TED No. NACA DE 362

Description: Report presenting an investigation of a 1/21-scale model of the Chance Vought F7U-3 airplane in the 20-foot free-spinning tunnel to determine the erect and inverted spin and recovery characteristics for combat loading in the clean condition. Results regarding erect spins, inverted spins, spin-recovery parachutes, and recommended recovery technique are provided.
Date: November 9, 1951
Creator: Klinar, Walter J. & Healy, Frederick M.
Partner: UNT Libraries Government Documents Department
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Experimental investigation of typical constant- and variable-area exhaust nozzles and effects on axial-flow turbojet-engine performance

Description: Report presenting testing of several turbojet engines with both constant- and variable-area nozzles to extend full-scale nozzle performance to higher exhaust-nozzle pressure ratios and to investigate the effects of constant- and variable-area nozzles on turbojet-engine operation. Results regarding the different types of nozzles are provided.
Date: July 9, 1951
Creator: Wallner, Lewis E. & Wintler, John T.
Partner: UNT Libraries Government Documents Department
open access

The Effect of Mass Distribution on the Low-Speed Dynamic Lateral Stability and Control Characteristics of a Model With a 60 Degree Triangular Wing

Description: Memorandum presenting an investigation to determine the effect of mass distribution on the dynamic lateral stability and control characteristics of a model with a 60 degree triangular wing in the free-flight tunnel. Flight tests and calculations were made for five different loading conditions. Results regarding the oscillatory stability, lateral control, and general flight behavior are provided.
Date: March 9, 1951
Creator: Johnson, Joseph L.
Partner: UNT Libraries Government Documents Department
open access

A theoretical investigation of the influence of autopilot natural frequency upon the dynamic performance characteristics of a supersonic canard missile configuration with a pitch-attitude control system

Description: Report presenting a theoretical investigation to determine the effects of autopilot natural frequency on the dynamic performance characteristics of an attitude-controlled supersonic missile configuration with rate damping for a Mach number and altitude range. The autopilots considered were single-degree-of-freedom systems with a fixed damping ratio and various natural frequencies.
Date: October 9, 1951
Creator: Passera, Anthony L.
Partner: UNT Libraries Government Documents Department
open access

Rolling Effectiveness of All-Movable Wings at Small Angles of Incidence at Mach Numbers From 0.6 to 1.6

Description: "Experimental data have been obtained of the rolling effectiveness of several all-movable wing configurations by means of rocket-propelled test vehicles in free flight. The results are compared with some available methods of estimation. These results validate the use of the simple equation derived by a strip integration and originally presented in NACA RM L50G14b over a wide range of application as a means of estimating the rolling effectiveness of all-movable wings" (p. 1).
Date: October 9, 1951
Creator: Strass, H. Kurt & Marley, Edward T.
Partner: UNT Libraries Government Documents Department
open access

Jet effects on pressures and drags of bodies

Description: From Introduction: "The propulsive jet that discharges from the base of a missile body or nacelle may, by interaction with external stream, cause important drag and stability changes. This paper presents some results of recent investigations by the Lewis and Langley laboratories of the jet effect on body end pressures and drag at zero lift."
Date: November 9, 1951
Creator: Gillespie, Warren, Jr.
Partner: UNT Libraries Government Documents Department
open access

Investigation of the Structural Damping of a Full-Scale Airplane Wing

Description: "An investigation to determine the structural damping characteristics of a full-scale airplane wing was conducted by the shock-excitation method wherein the wing was loaded to a predetermined deflection and the load suddenly released. The test specimen vibrated at its fundamental bending frequency of 1.69 cycles per second. Only the first 2 or 3 cycles showed any indication of a higher frequency being superimposed upon the fundamental bending frequency" (p. 1).
Date: March 9, 1951
Creator: Fearnow, Dwight O.
Partner: UNT Libraries Government Documents Department
open access

Flame velocities of four alkylsilanes

Description: Report presenting the rates of flame propagation of four alkylsilanes as determined by the tube method. Results regarding alkylsilane flame velocities, blends of diethylsilane and n-pentane, and flame propagation theories are provided.
Date: March 9, 1951
Creator: Gerstein, Melvin; Wong, Edgar L. & Levine, Oscar
Partner: UNT Libraries Government Documents Department
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Dynamic Stability and Control Characteristics of a Delta-Wing Vertically Rising Airplane Model in Take-Offs, Landings, and Hovering Flight

Description: Report presenting an investigation by means of tests of a flying model in still air to determine the dynamic stability and control characteristics of a delta-wing vertically rising airplane in take-off, landing, and hovering phases of flight. The uncontrolled pitching motion consisted of an unstable oscillation which was more unstable with a rearward than with the normal center-of-gravity location.
Date: October 9, 1951
Creator: Lovell, Powell M., Jr.; Bates, William R. & Smith, Charles C., Jr.
Partner: UNT Libraries Government Documents Department
open access

Power Unit for High-Intensity Light Source

Description: "A light-source power unit has been developed that provides reliable trigger, and easy synchronization with rotating elements or electric impulses. When used with conventional spark gaps and flash tubes, this power unit provides a light pulse of high intensity and short duration" (p. 1).
Date: July 9, 1951
Creator: Young, Allen E.; McCullough, Stuart & Smith, Richard L.
Partner: UNT Libraries Government Documents Department
open access

The Effects of Increasing the Leading-Edge Radius and Adding Forward Camber on the Aerodynamic Characteristics of a Wing With 35 Degrees of Sweepback

Description: Report presenting a wind-tunnel investigation to determine the effects of a section modification on the aerodynamic characteristics of a wing with 35 degrees of sweepback. The wing was modified by increasing the leading-edge radius of the NACA 64A010 section and adding a small amount of camber to the forward portion of the chord. Lift, drag, pitching-moment, and trailing-edge-flap hinge-moment characteristics of the modified wing are compared with results from the original wing.
Date: February 9, 1951
Creator: Demele, Fred A. & Sutton, Fred B.
Partner: UNT Libraries Government Documents Department
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