38 Matching Results

Search Results

Results: 1 - 24 next
open access

The Decontamination of Uranium from Fission Products by the Use of the Uranyl Oxalate Precipitation Reaction

Description: Abstract: "Decontamination factors of the order of 10-4 were obtained for Beta and Gamma emitters present as fission products when uranium was precipitated from 50 mC activity level solutions as uranyl oxalate under normal uranium yield conditions for three cycles (~60%). Factors of the order of 10-3 were obtained by the use of this reaction with similar solutions under relatively high uranium yield conditions for three cycles (~90%). The uranium peroxide precipitation reaction proved to be of … more
Date: May 10, 1951
Creator: Kelchner, B. L.
Partner: UNT Libraries Government Documents Department
open access

Review of Columbia River studies program -- H. I. Development Division

Description: In view of current work on the Columbia River by the Biology Division and Development Division of the Health Instrument Divisions and the contemplated studies of the US Public Health Service Group new at Hanford, it was suggested that the groups review their programs related to studies of the Columbia River. The work carried out by the Control Functions Section of the Health Instrument Division in this respect is reviewed in outline form. Some of the studies are jointly carried out by the Contr… more
Date: May 10, 1951
Creator: Singlevich, W.
Partner: UNT Libraries Government Documents Department
open access

A Solvent Extraction Method for Neptunium (237) Analysis

Description: Technical report describing a rapid and quantitative radiochemical method for the analysis of neptunium (237). This method is based on the extraction of neptunium (IV) with thenoyl-trifluoracetone in xylene. Neptunium (237) is separated free from other alpha emitters and from non-radioactive interferences, and the method may be readily adapted to remote control. [From Abstract]
Date: July 10, 1951
Creator: Moore, Fletcher L.
Partner: UNT Libraries Government Documents Department
open access

Production Test 105-389-P graphite sample boring from process channels. Final report

Description: The study of radiation damage to the graphite moderator is largely dependent upon the availability of graphite samples from the moderator itself. Because of the varied temperature-flux history and complicated structure of the piles, it is impossible to study the problem from the laboratory standpoint alone. The samples of greatest interest are those taken from the sections of the moderator which have received the greatest damage. However, a comprehensive study requires samples from all sections… more
Date: July 10, 1951
Creator: Cole, J. B.
Partner: UNT Libraries Government Documents Department
open access

Lateral-Control Characteristics and Dihedral Effect of a Wing-Body Combination With a Variable-Incidence Triangular Wing and Wing-Tip Ailerons at a Mach Number of 1.52

Description: Memorandum presenting an investigation of aileron effectiveness and dihedral effect for a wing-body combination with a variable-incidence triangular wing with modified half-delta controls at the wing tips. The tests were conducted at a Mach number of 1.52 at a Reynolds number of 0.82 million. The experimental value of aileron effectiveness at 0 degrees angle of attack was approximately 78 percent of the value predicted by linear theory, and the effectiveness decreased with increasing wing angle… more
Date: January 10, 1951
Creator: Scherrer, Richard & Dennis, David H.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Investigation of the Effects of Rectangular Vortex Generators on the Performance of a Short 1.9:1 Straight-Wall Annular Diffuser

Description: Report presenting a preliminary investigation in a duct system with fully developed pipe flow to determine the effectiveness of vortex generators in improving the performance of a 21-inch-diameter straight-outer-wall annual diffuser with an overall equivalent conical expansion angle of 15 degrees and a and 1.9:1 area ratio. The vortex generators used were rectangular noncambered airfoils that varied in chord, span, angle of attack, number, and location. Results regarding a diffuser with no vort… more
Date: October 10, 1951
Creator: Wood, Charles C.
Partner: UNT Libraries Government Documents Department
open access

Free-Flight Investigation of the Longitudinal Stability and Control of a Rocket-Propelled Missile Model Having Cruciform, Triangular, Interdigitated Wings and Tails

Description: Report presenting flight testing of a missile model with cruciform, triangular, interdigitated wings and tails to determine the longitudinal stability and control characteristics over a range of Mach numbers. Results regarding static stability and damping, control effectiveness, and control hinge moments are provided.
Date: July 10, 1951
Creator: Sandahl, Carl A. & Hall, James R.
Partner: UNT Libraries Government Documents Department
open access

Over-all performance of J35-A-23 two-stage turbine

Description: Over-all performance of a two-stage turbine from a J35-A-23 turbojet engine is presented. Limiting blade loading restricted work output to approximately 95 percent of the design value. The brake internal efficiency at design operating conditions was approximately 0.75. maximum brake internal efficiency at off-design conditions was between 0.81 and 0.82.
Date: December 10, 1951
Creator: Rebeske, John J., Jr.; Berkey, William E. & Forrette, Robert E.
Partner: UNT Libraries Government Documents Department
open access

Theoretical Investigation of an Automatic Control System With Primary Sensitivity to Normal Accelerations as Used to Control a Supersonic Canard Missile Configuration

Description: Report presenting a theoretical investigation of an automatic control system with primary sensitivity to normal accelerations as used to control a specific supersonic canard missile. The control system is made up of an integrating servomotor that receives a signal from an accelerometer that is sensitive to normal accelerations of the airframe that it is controlling. The acceleration control system appears to work well for obtaining longitudinal control, but works best when combined with a homin… more
Date: July 10, 1951
Creator: Seaberg, Ernest C. & Smith, Earl F.
Partner: UNT Libraries Government Documents Department
open access

Low-Speed Investigation of the Effects of Single Slotted and Double Slotted Flaps on a 47.7 Degree Sweptback-Wing: Fuselage Combination at a Reynolds Number of 6.0 X 10(Exp 6)

Description: Report presenting an investigation to determine the effects of partial-span single slotted and double slotted flaps at various deflections on the longitudinal aerodynamic characteristics of a sweptback-wing-fuselage combination. Results regarding the lift characteristics, pitching-moment characteristics, drag characteristics, and effect of flap-bracket alignment are provided.
Date: September 10, 1951
Creator: Mollenberg, Ernst F. & Spooner, Stanley H.
Partner: UNT Libraries Government Documents Department
open access

Compilation and review of effects of design parameters on ditching characteristics

Description: From Summary: "This paper supplements a previously published one on the effect of design parameters on ditching characteristics. The supplementary information is based on additional data available from both model tests and full-scale experience. In addition, summary tables compiled from the NACA model ditching investigations are presented."
Date: July 10, 1951
Creator: Fisher, Lloyd J. & Hoffman, Edward L.
Partner: UNT Libraries Government Documents Department
open access

Investigation of altitude starting and acceleration characteristics of J47 turbojet engine

Description: An investigation was conducted on an axial-flow-compressor type turbojet engine in the NACA Lewis altitude wind tunnel to determine the operational characteristics of several ignition systems, cross-fire tube configurations and fuel systems over a range of simulated flight conditions. The opposite-polarity-type spark plug provided the most satisfactory ignition. Increasing the cross-fire-tube diameter improved intercombustor flame propagation. At high windmilling speeds, accelerations to approx… more
Date: January 10, 1951
Creator: Golladay, Richard L. & Bloomer, Harry E.
Partner: UNT Libraries Government Documents Department
open access

Damping in Roll of Straight and 45 Degree Swept Wings of Various Taper Ratios Determined at High Subsonic, Transonic, and Supersonic Speeds With Rocket-Powered Models

Description: Report presenting rocket-powered flight testing to determine the damping in roll of several wings of 0 degree and 45 degree quarter-chord-line sweep with various taper ratios for a range of Mach numbers. Damping in roll decreased with decreasing taper ratio at roughly the same rate for swept and unswept wings and also decreased by sweeping the quarter-chord line. The experimental results were also consistently lower than what was predicted by theory.
Date: October 10, 1951
Creator: Sanders, E. Claude, Jr.
Partner: UNT Libraries Government Documents Department
open access

Effects of spanwise thickness variation on the aerodynamic characteristics of 35 degree and 45 degree sweptback wings of aspect ratio 6: transonic-bump method

Description: Report presenting an aerodynamic investigation in the high-speed 7- by 10-foot tunnel to determine the effects of taper-in-thickness on the aerodynamic characteristics of wings with 35 and 45 degrees of sweepback, aspect ratio 6, and taper ratio 0.60. The wings were tested over a range of Mach numbers.
Date: July 10, 1951
Creator: Morrison, William D., Jr. & Fournier, Paul G.
Partner: UNT Libraries Government Documents Department
open access

The transonic characteristics of 17 rectangular, symmetrical wing models of varying aspect ratio and thickness

Description: Report presenting an investigation to determine the aerodynamic characteristics of a series of thin, rectangular wings in the 16-foot high-speed wind tunnel using the transonic bump technique over a range of Mach and Reynolds numbers. Lift, drag, and pitching moment characteristics are presented for wings of 4 different aspect ratios and NACA 63A0XX sections and with 5 different thickness-to-chord ratios.
Date: May 10, 1951
Creator: Nelson, Warren H. & McDevitt, John B.
Partner: UNT Libraries Government Documents Department
open access

Theoretical performance of lithium and fluorine as a rocket propellant

Description: Theoretical performance for liquid lithium and liquid fluorine as a rocket propellant was calculated with assumptions both of equilibrium and frozen composition during expansion. Parameters included were specific impulse, combustion-chamber temperature, nozzle-exit temperature, composition, mean molecular weight, characteristic velocity, coefficient of thrust, and ratio of nozzle-exit area to throat area. For chamber pressure of 300 pounds per square inch absolute and expansion to 1 atmosphere,… more
Date: May 10, 1951
Creator: Gordon, Sanford & Huff, Vearl N.
Partner: UNT Libraries Government Documents Department
open access

Low-Speed Investigation of Several Types of Split Flap on a 47.7 Degree Sweptback-Wing - Fuselage Combination of Aspect Ratio 5.1 at a Reynolds Number of 6.0 X 10(Exp 6)

Description: Report presenting a low-speed wind-tunnel investigation to determine the longitudinal aerodynamic characteristics of a 47.7 degree sweptback wing-fuselage combination with split flaps and several modifications. The lift characteristics, pitching-moment characteristics, drag characteristics, and a comparison with flaps of the slotted type are included.
Date: July 10, 1951
Creator: Spooner, Stanley H. & Mollenberg, Ernst F.
Partner: UNT Libraries Government Documents Department
open access

Lateral Control Characteristics and Dihedral Effect of a Wing-Body Combination With a Variable Incidence Triangular Wing and Wing-Tip Ailerons at a Mach Number of 1.52

Description: "Aileron effectiveness and dihedral effect were investigated for a wing-body combination having a variable-incidence triangular wing with modified half-delta controls at the wing tips. The tests were conducted at a Mach number of 1.52 at a Reynolds number of 0.82 million. At the Mach number of the tests, the Mach cone from the wing apex was almost coincident with the wing leading edge" (p. 1).
Date: January 10, 1951
Creator: Scherrer, Richard & Dennis, David H.
Partner: UNT Libraries Government Documents Department
open access

Experimental Study of the Effect of Sweepback on Transonic Aileron Flutter

Description: Report presenting the effects of sweepback on the occurrence and principal characteristics of single-degree-of-freedom aileron flutter for a wing-aileron combination. Testing occurred over a range of Mach and Reynolds number and angles of attack. Results regarding the measurements of aileron motion, effect of sweep, variation of lift coefficient, and use of shadowgraph technique for visualizing flow are provided.
Date: September 10, 1951
Creator: Levy, Lionel L., Jr. & Knechtel, Earl D.
Partner: UNT Libraries Government Documents Department
open access

A biharmonic relaxation method for calculating thermal stress in cooled irregular cylinders

Description: A numerical method was developed for calculating thermal stresses in irregular cylinders cooled by one or more internal passages. The use of relaxation methods and elementary methods of finite differences was found to give approximations to the correct values when compared with previously known solutions for concentric circular cylinders possessing symmetrical and asymmetrical temperature distributions.
Date: May 10, 1951
Creator: Holms, Arthur G.
Partner: UNT Libraries Government Documents Department
open access

Graphite Sample Boring from Process Channels : Final Report, Production Test 105-389-P

Description: The following report records a total of forty-nine graphite core samples that have been bored from process tube blocks in the Hanford piles with the intention to provide results to indicate that core boring is an entirely practical operation over bore scraping in obtaining powder samples.
Date: July 10, 1951
Creator: Cole, J. B.
Partner: UNT Libraries Government Documents Department
open access

Pile modification resulting in increased power levels

Description: The power output of the piles is being restricted primarily by three important limitations; those due to graphite temperatures, slug and tube corrosion and maximum power per tube or ``boiling disease.`` The purpose of this document is to present means for increasing very appreciably the ``boiling disease`` limits. In addition, means for alleviating the corrosion limitations will be discussed.
Date: July 10, 1951
Creator: Carbon, M. W. & Fryar, R. M.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen