501 Matching Results

Search Results

Results: 1 - 24 next
open access

A Preliminary Investigation of Supercharging an Air-Cooled Engine in Flight

Description: "This report presents the results of preliminary tests made on the effects of supercharging an air-cooled engine under airplane flight conditions. Service training airplanes were used in the investigation equipped with production types of Wright J engines. A N.A.C.A. Roots type supercharger was driven from the rear of the engine. In addition to measuring those quantities that would enable the determination of the climb performance, measurements were made of the cylinder-head temperatures and th… more
Date: July 30, 1927
Creator: Ware, Marsden & Schey, Oscar W.
Partner: UNT Libraries Government Documents Department
open access

Pressure distribution over an NACA 23012 airfoil with a fixed slot and a slotted flap

Description: Report presents the results of a pressure-distribution investigation conducted in the Langley Memorial Aeronautical Laboratory 7 by 10-foot wind tunnel to determine the air loads on an NACA 23012 airfoil in combination with a fixed leading-edge slot and a slotted flap. Pressures were measured over the upper and lower surfaces of the component parts of the combination for several angles of attack and at several flap settings. The data, presented as pressure diagrams and graphs of section coeffic… more
Date: July 30, 1941
Creator: Harris, Thomas A. & Lowry, John G.
Partner: UNT Libraries Government Documents Department
open access

Measurements of the damping in roll of large-scale swept-forward and swept-back wings

Description: Report presenting wind-tunnel testing of five large-scale tapered wings with a variety of angles of sweep to determine the effects of scale and sweep on the damping-in-roll parameter. Rolling moment and pressure distribution were measured for each plain wing while in steady roll for a range of angles of attack. Results regarding the effects of sweep at zero lift, effects of lift, and aurorotational characteristics are provided.
Date: July 30, 1947
Creator: Hunton, Lynn W. & Dew, Joseph K.
Partner: UNT Libraries Government Documents Department
open access

Regional survey monthlies 1947

Description: This report provides the monthly radiation monitoring sampling surveys for 1947.
Date: July 30, 1947
Creator: Paas, H. J. & Berlin, W. C. Jr.
Partner: UNT Libraries Government Documents Department
open access

Progress Report No. 63 June 15-July 15, 1948

Description: This is the University of California, Radiation Laboratory progress report for June 15-July 15, 1948. It discusses the following: (1) 184-inch Cyclotron Program; (2) 60-inch Cyclotron Program; (3) Synchrotron Program; (4) Linear Accelerator Program; (5) Experimental Physics; (6) Theoretical Physics, (7) Isotope Separation Program; (8) Chemistry Departments; (9) Medical Physics; and (10) Health Physics and Chemistry.
Date: July 30, 1948
Creator: Authors, Various
Partner: UNT Libraries Government Documents Department
open access

Some effects of gutter flame-holder dimensions on combustion-chamber performance of 20-inch ram jet

Description: Report presenting the operational characteristics of a 20-inch ramjet with four different gutter-grid flame holders and a three-gutter flame holder with an adjustable gutter angle. The flame holders were compared on the basis of operating ranges of fuel-air ratio, combustion-chamber-inlet velocity, and the combustion efficiencies obtainable.
Date: July 30, 1948
Creator: Wilcox, Fred A.; Perchonok, Eugene & Wishnek, George
Partner: UNT Libraries Government Documents Department
open access

Vibration Survey of NACA 24-Inch Supersonic Axial-Flow Compressor

Description: "Vibration investigations were made of two blade cascades in wind tunnels and of blades operated in the NACA 24-inch supersonic compressor. The results showed that the blade vibrations were present at all tunnel and compressor air velocities and were influenced primarily by tunnel design, simulated centrifugal loading, surging, angle of attack, and possible critical Mach numbers" (p. 1).
Date: July 30, 1948
Creator: Meyer, André J., Jr. & Hanson, Morgan P.
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of Air-Cooled Turbine Blades in Turbojet Engine: 1: Rotor Blades With 10 Tubes in Cooling-Air Passages

Description: Report presenting an investigation to experimentally determine the effectiveness of air cooling several turbine-blade configurations in a turbojet engine. The results obtained with the first configuration, which was a hollow blade shell with 10 tube inserts, are presented. A description of factors leading to the design are provided as well as the correlated cooled-blade temperatures, solid-blade temperatures, cooling-air-temperature increase through radial passages, and blade failure are provid… more
Date: July 30, 1950
Creator: Ellerbrock, Herman H., Jr. & Stepka, Francis S.
Partner: UNT Libraries Government Documents Department
open access

THE ISOTRON

Description: Most methods of separating isotopes depend on the use of a large magnetic field. The isotron is an electromagnetic device for separating isotopes, but it effects the separation by the use of radiofrequency voltages instead of magnetic fields. It has the advantage that plane sources of large area can be used instead of the slit sources to which most magnetic methods are limited. Before entering into any discussion of the details, a simplified description of the principles of the method is given.
Date: July 30, 1950
Creator: Wilson, R.R.
Partner: UNT Libraries Government Documents Department
open access

Emission Spectroscopic Analysis of Hydrogen - Deuterium Mixtures

Description: The following report discusses a method developed by Broida and Moyer, the method describes an emission spectrometer procedure for the determination of the ratio 100 D/(H4D).
Date: July 30, 1951
Creator: Parodi, J. A.; Burch, W. G.; Kendall, L. F. & Leboeuf, M. B.
Partner: UNT Libraries Government Documents Department
open access

Hanford Standard Pile

Description: No Description Available.
Date: July 30, 1951
Creator: Davenport, D. E.; Lynn, G .L. & Pound, D. C.
Partner: UNT Libraries Government Documents Department
open access

Percutaneous Absorption of Tritium Oxide

Description: This report presents data on the absorption of tritium oxide vapor through human skin.
Date: July 30, 1951
Creator: DeLong, C. W.
Partner: UNT Libraries Government Documents Department
open access

Project C-431-A Production Facility design computations on outfall structure 1900-C

Description: Project C-431-A includes the design of the C Water Plant outfall structure. This report documents design assumptions and the design of the spillway, outfall sewers, spillway chute, trash racks, walkways, stop log and trash rack slots, main sewer, and retention sewers. The spillway capacity is to be 268,000 gpm with a crest elevation at 429.0. This flow capacity is composed of flow from the 105-C Retention Basin (80,000 gpm), 105-B Retention Basin (45,000 gpm), and the 190-C Area main sewer (143… more
Date: July 30, 1951
Creator: Patterson, R. K.
Partner: UNT Libraries Government Documents Department
open access

The Decomposition of Teflon in High-Level Gamma Radiation

Description: Abstract: A study of irradiated and normal Teflon by means of X-ray diffraction, infrared analysis, gas evolution, and visual examination is presented and discussed.
Date: July 30, 1952
Creator: Ryan, J. W. & Baird, S. L., Jr.
Partner: UNT Libraries Government Documents Department
open access

Effect of pH and Concentration of Ammonium Persulfate on Colorimetric Determination of Nickel by Dimethylglyoxime Method

Description: The following report records the study of the optimum pH of the method of the colorimetric dimethylglyoxime for nickel before the addition of oxidant and the concentration of ammonium persulfate needed to insure complete oxidation to higher nickel valence states and thus prevent precipitation of less soluble nickelous salt that was made. Results of this study is presented in Table 1.
Date: July 30, 1952
Creator: White, J. C.
Partner: UNT Libraries Government Documents Department
open access

An Investigation of the Stream-Tube Power Losses and an Improvement of the Diffuser-Entrance Nose in the Langley 8-Foot Transonic Tunnel

Description: Report presenting surveys of the distribution of total pressure, total temperature, and static pressure at a number of stations in the slotted test section and diffuser of the transonic tunnel with early and improved diffuser-entrance noses installed at the ends of the slots. Results regarding power losses with the original diffuser-entrance nose, development of revised diffuser-entrance noses, and energy losses in the tunnel with the final diffuser-entrance nose are provided.
Date: July 30, 1952
Creator: Whitcomb, Richard T.; Carmel, Melvin M. & Morgan, Francis G., Jr.
Partner: UNT Libraries Government Documents Department
open access

Separation of Isotopes by Mass Diffusion - Unequal Diffusion Coefficients

Description: From summary: "Equations for determination of stage enrichment factor and screen area for the ideal case of 'zero back-pressure' are derived...Comparison with the theory of Benedict is made together with recommendations for application of his results for non-zero back pressure to the case under consideration."
Date: July 30, 1952
Creator: Keyes, J. J., Jr.
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of the Effect of Entrance Width-to-Height Ratio on the Performance of an Auxiliary Scoop-Type Inlet at Mach Numbers From 0 to 1.3

Description: Memorandum presenting an investigation of variable-area auxiliary inlets intended to provide for the variation of engine air requirements with speed and altitude. Three auxiliary scoop inlets were tested in combination with a nose inlet at a range of Mach numbers tested at zero angle of attack.
Date: July 30, 1953
Creator: Brajnikoff, George B. & Stroud, John F.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen