37 Matching Results

Search Results

Results: 1 - 24 next
open access

Flow Tests of an NACA-Designed Supercharger Inlet Elbow and the Effects of Various Components on the Flow Characteristics at the Elbow Outlet

Description: Note presenting an investigation on a supercharger inlet elbow designed to have a uniform velocity distribution at the outlet with a minimum pressure loss through the bend. The effects of a vane, an impeller-shaft housing, and the combination of the two on the outlet-velocity distribution and total pressure drop through the elbow were determined.
Date: October 1946
Creator: Guentert, D. C.; Todd, D. J. & Simmons, W. P., Jr.
Partner: UNT Libraries Government Documents Department
open access

A Relaxation Procedure for the Stress Analysis of a Continuous Beam-Column Elastically Restrained Against Deflection and Rotation at the Supports

Description: Note presenting a method of stress analysis for a continuous beam-column supported by deflectional and rotational springs. The principal feature of the method is the use of a relaxation procedure to determine the deflections and rotations of the supports. The shears and moments at the supports and between the supports can then be calculated with the aid of sample equations and graphs.
Date: October 1946
Creator: Hu, Pai C. & Libove, Charles
Partner: UNT Libraries Government Documents Department
open access

Flight investigation of the cooling characteristics of a two-row radial engine installation 3: engine temperature distribution

Description: From Summary: "The temperature distribution of a two-row radial engine in a twin-engine airplane has been investigated in a series of flight tests. The test engine was operated over a wide range of conditions at density altitudes of 5000 and 20,000 feet; quantitative results are presented showing the effects of flight and engine variables upon average engine temperature and over-all temperature spread. Discussions of the effect of the variables on the shape of the temperature patterns and on th… more
Date: October 1946
Creator: Rennak, Robert M.; Messing, Wesley E. & Morgan, James E.
Partner: UNT Libraries Government Documents Department
open access

Turbosupercharger-Rotor Temperatures in Flight

Description: Note presenting temperatures of a turbosupercharger rotor measured in flight for a variety of conditions by thermocouples, the leads of which were brought away from the turbine by means of rotating slip rings and stationary brushes. A consistent and almost linear relation was shown between turbine temperature at the outer edge of the rim and the effective exhaust-gas temperature at the surfaces of the blades on three successive flights at cruising power.
Date: October 1946
Creator: Bartoo, Edward R.
Partner: UNT Libraries Government Documents Department
open access

The infrared spectra of spiropentane methylenecyclobutane and 2-methyl-1-butene

Description: The infrared spectra of spiropentane, methylenecyclobutane, and 2-methyl-1-butene were measured in the region from 3 to 14 microns with a rock salt prism spectrometer of medium dispersion. The pure samples were prepared at the NACA Cleveland Laboratory. The vapors of these three C5 hydrocarbons were investigated at room temperature and at pressures in the range from 80 to 300 millimeters of mercury absolute in a 10-centimeter cell. The spectra were compared with each other and with Ramon spectr… more
Date: October 1946
Creator: Cleaves, Alden P. & Sherrick, Mildred E.
Partner: UNT Libraries Government Documents Department
open access

Hanford Engineer Works technical progress letter No. 119, October 6--October 12, 1946

Description: This document details technical activities in the 100, 200, 300 areas as well as activities in the chemical development, statistical studies, and Laboratories Departments for the period of October 6 through October 12, 1946. (FI)
Date: October 17, 1946
Creator: Greninger, A. B.
Partner: UNT Libraries Government Documents Department
open access

Estimate of life of manufacturing piles

Description: This memorandum provides an estimate of the life of manufacturing piles.
Date: October 22, 1946
Creator: Milton, W. H. Jr.
Partner: UNT Libraries Government Documents Department
open access

Columbia River temperature study at 100-F Area

Description: In August 1946 it was discovered that two effluent lines near the Columbia River at Hanford were damaged. The upstream effluent line has broken off 37 fact from the shoreline and the downstream effluent line had been bent and partly broken seventeen feet from shoreline and has swung downstream to a point about 50 feet from shorelines. This study was made to determine how fast and in what fashion the temperature of the effluent water is dissipated in the Columbia River under the present conditio… more
Date: October 22, 1946
Creator: Lewis, W. R. & Rohrbacher, R. A.
Partner: UNT Libraries Government Documents Department
open access

Graphite expansion committee meeting of October 4, 1946

Description: Recent data show that test hole samples out from the center of a bar show greater expansion rates than do samples out from the edge of a bar. The previously noticed irregularities in expansion of test hole samples are attributed to this phenomenon. For unexplained reasons, the expansion of the graphite piles is in close agreement with the smaller expansion rates shown by test hole samples rather than with the larger rates. It is recommended that the neoprene coal on the far side of the F pile b… more
Date: October 7, 1946
Creator: Woods, W. K.
Partner: UNT Libraries Government Documents Department
open access

RADIOCARBON FROM PILE GRAPHITE CHEMICAL METHODS FOR ITS CONCENTRATIONS

Description: Samples of pile graphite, irradiated in a test-hole at Hanford for 15 months, have been assayed for radioactive C{sup14}, yielding 0.38 ± 0.04 microcuries per gram. At this level of activity, the pile graphite contains very valuable amounts of C{sup14}. The relation between the above assay and the probable average assay of pile graphite is discussed, and it is concluded that the latter is almost certainly above 0.3 uc/ gram. Controlled oxidation of this graphite, either with oxygen at ~ 750°C, … more
Date: October 10, 1946
Creator: Arnold, J. R. & Libby, W. F.
Partner: UNT Libraries Government Documents Department
open access

The Fatigue Characteristics of Bolted Lap Joints of 24S-T Alclad Sheet Materials

Description: Report presenting fatigue testing to determine the effect of bolt fit on the lifetime of lap joints of 24S-T Alclad sheet of various thicknesses joined by steel bolts and designed for sheet failure under repeated loading. Results regarding joints with countersunk bolts, joints with bolts drawn to high initial torque, joints with bolts of different diameters, multibolt joints with nonuniform bolt fit, fatigue strength of the sheet material, friction in bolted lap joints, and bolt slip during tes… more
Date: October 1946
Creator: Jackson, L. R.; Wilson, W. M.; Moore, H. F. & Grover, H. J.
Partner: UNT Libraries Government Documents Department
open access

Flutter and oscillating air-force calculations for an airfoil in a two-dimensional supersonic flow

Description: An account is given of the Possio theory of non stationary flow for small disturbances in a two-dimensional supersonic flow and of its application to determination of the aerodynamic forces on an oscillating airfoil. Further application is made to the problem of wing flutter in the degrees of freedom - torsion, bending, and aileron torsion. Numerical tables for flutter calculations are provided for numerous values of the Mach number greater than unity. Results for bending-torsion wing flutter a… more
Date: October 1946
Creator: Garrick, I. E. & Rubinow, S. I.
Partner: UNT Libraries Government Documents Department
open access

Flight tests of an all-movable horizontal tail with geared unbalancing tabs on the Curtiss XP-42 airplane

Description: Report presenting flight tests of an all-movable tail with geared unbalancing tabs installed on the Curtiss XP-42 airplane. The control configuration used involved the pilot's stick connected directly to the tail and the tabs changed from servotabs to geared unbalancing tabs. Results regarding dynamic longitudinal stability and control, static longitudinal stability, elevator control, elevator hinge-moment characteristics, and elevator control in landing, in flight, and in spins are provided.
Date: October 1946
Creator: Kleckner, Harold F.
Partner: UNT Libraries Government Documents Department
open access

Investigation of the performance of a 20-inch ram jet using preheated fuel

Description: Report presenting the performance characteristics of a 20-inch ramjet opeerating with preheated unleaded 62 octane fuel. The results of the investigation indicated an improvement in the combustion efficiency and operating range of the ramjet when using preheated fuel.
Date: October 28, 1946
Creator: Perchonok, Eugene; Wilcox, Fred A. & Sterbentz, William H.
Partner: UNT Libraries Government Documents Department
open access

Altitude cooling investigation of the R-2800-21 engine in the P-47g airplane 3: individual-cylinder temperature reduction by means of intake-pipe throttle and by coolant injection

Description: "Flight tests were conducted on a R-2800-21 engine in the P-47G airplane to determine the effect on the wall temperatures of cylinder 10 of throttling the charge in the intake pipe and of injecting a water-ethanol coolant into the intake pipe. Cylinder 10 was chosen for this investigation because it runs abnormally hot (head temperatures of the order of 45 F higher than those of the next hottest cylinder) at the medium and high-power conditions. Tests with interchanged cylinders showed that the… more
Date: October 9, 1946
Creator: Bell, E. Barton; Valerino, Michael F. & Manganiello, Eugene J.
Partner: UNT Libraries Government Documents Department
open access

Altitude cooling investigation of the R-2800-21 engine in the P-47G airplane 2: investigation of the engine & airplane variables affecting the cylinder temperature distribution

Description: "The data obtained from cooling tests of an R-2800-21 engine installed in a P-47G airplane were studied to determine which engine and airplane operation variables were mainly responsible for the extremely uneven temperature distribution among the 18 engine cylinders obtained at the medium and high engine-power conditions. The tests consisted of flights at altitudes from 5000 to 35,000 feet for the normal range of engine and airplane operation. The results of the study showed that a flow conditi… more
Date: October 9, 1946
Creator: Pesman, Gerard J. & Kaufman, Samuel J.
Partner: UNT Libraries Government Documents Department
open access

Flight and Test-Stand Investigation of High-Performance Fuels in Pratt & Whitney R-1830-94 Engines 4: Comparison of Cooling Characteristics of Flight and Test-Stand Engines

Description: "The cooling characteristics of three R-1830-94 engines, two of which were mounted in a test stand and the other in a B-24D airplane, were investigated and the results were compared. The flight tests were made at a pressure altitude of 7000 feet; the test-stand runs were made at ground-level atmospheric conditions. Three cooling runs were made for each engine: variable cooling-air pressure drop, variable carburetor-air flow, and variable fuel-air ratio" (p. 1).
Date: October 8, 1946
Creator: Dandois, Marcel & Werner, Milton
Partner: UNT Libraries Government Documents Department
open access

The Effects of Aerodynamic Heating and Heat Transfer on the Surface Temperature of a Body of Revolution in Steady Supersonic Flight

Description: "An approximate method for determining the convective cooling requirement in the laminar boundary-layer region of a body of revolution in high-speed flight was developed and applied to an example body. The cooling requirement for the example body was determined as a function of Mach number, altitude, size, and a surface-temperature parameter. The maximum value of Mach number considered was 3.0 and the altitudes considered were those within the lower constant-temperature region of the atmosphere… more
Date: October 14, 1946
Creator: Scherrer, Richard
Partner: UNT Libraries Government Documents Department
open access

Cylinder-Temperature Correlation of a Single-Cylinder Liquid-Cooled Engine

Description: "An analysis based on nonboiling forced-convection heat-transfer theory is made of the cooling processes in liquid-cooled engine cylinders. Semiempirical equations that relate the average head and barrel temperatures with the primary engine and coolant parameters are derived. A correlation method based on these equations is applied to data obtained from previously reported investigations, which were conducted over large ranges of engine and coolant conditions with two liquid-cooled cylinders us… more
Date: October 1, 1946
Creator: Pinkel, Benjamin; Manganiello, Eugene J. & Bernardo, Everett
Partner: UNT Libraries Government Documents Department
open access

Flight measurements of the lateral control characteristics of narrow-chord ailerons on the trailing edge of a full-span slotted flap

Description: From Summary: "Results are presented of light tests made to determine the effect of flap deflection on the lateral control characteristics of a modified Brewster F2A-2 airplane equipped with partial-span narrow-chord ailerons on the trailing edge of a full-span NACA slotted flap. The investigation included determination of the rolling and yawing characteristics of the airplane in abrupt aileron rolls with the slotted flap at various settings ranging from 0 degree to about 40 degrees. The result… more
Date: October 25, 1946
Creator: Sawyer, Richard H.
Partner: UNT Libraries Government Documents Department
open access

PREVENTION OF FISSION PRODUCT DIFFUSION

Description: The favorible attention being given graphite as a fuel rod material calls attention to the need for preventing diffusion of fission products from the fuel rods. The methods of prevention include painting the surface of the rod with an impermeable organic synthetic composition, enclosing the rods in metal cans, electroplating the rods with a suitable metal, or covering the surface with some type of inorganic ceranmic glaze. Each of these methods is evaluated as to feasibility. (M.H.R.)
Date: October 22, 1946
Creator: Wilson, J.E.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Normal Process and Single Process (XC) Uranium

Description: Certain difficulties have been encountered in attempts to substitute a 'one-step' casting process, developed at Iowa State College, for the 'normal' process generally used for the production of extrusion billets. In the 'one-step' process molten metal is delivered from the reduction bomb to the billet mold instead of allowing the metal to solidify in the bomb with subsequent vacuum remelting of the biscuit metal before casting in the billet mold. Routine analyses had failed to establish signifi… more
Date: October 7, 1946
Creator: Cleaves, H. E.
Partner: UNT Libraries Government Documents Department
open access

The Quantitative Estimation of the Activity of Beta Particle Emitters

Description: From abstract: "In estimating the activities of β-emitting materials used in the Biology Section, most measurements were made with Geiger-Mueller counters, although Lauritsen electroscopes were used in early work. All samples were mounted on flat porcelain capsules."
Date: October 3, 1946
Creator: Zinn, Walter H. (Walter Henry), 1906-2000; Broido, Abraham; Nordeen, Clifford & Himmelstein, Sheldon H.
Partner: UNT Libraries Government Documents Department
open access

Metabolism and Distribution of Inhaled Plutonium in Rats

Description: From abstract: "Several different techniques were used to introduce tracer quantities of plutonium into the lungs of rats. When aerosols were produced by atomizing aqueous solutions of the nitrates it was found that approximately 20 per cent of the dose was absorbed and deposited in the skelton [sic] with tetra-, hexa-, and trivalent plutonium. Thus with these compounds, the lungs represent a more dangerous portal of entry than either oral (0.05 per cent) or intramuscular (13 per cent) administ… more
Date: October 29, 1946
Creator: Abrams, Richard; Siebert, H. C.; Potts, A. M.; Forker, L. L.; Greenberg, D.; Postel, A. et al.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen