UNT Libraries Government Documents Department - 24 Matching Results

Search Results

Results: 1 - 24
open access

The aerodynamic characteristics throughout the subsonic speed range of a thin, sharp-edged horizontal tail of aspect ratio 4 equipped with a constant-chord elevator

Description: From Introduction: "Recent investigations have indicated several wing plan forms, wing sections, and wing-body-tail combinations suitable for flight at supersonic speeds. One such lifting surface, a thin, sharp-edged without sweep of aspect ratio 4 and taper ratio 0.5, has been the subject of an investigation in the Ames 12-foot pressure wind tunnel. The aim of the investigation was to determine the aerodynamic characteristics of such a wing plan form throughout the range of subsonic Mach numbe… more
Date: June 30, 1949
Creator: Bandettini, Angelo & Reed, Verlin D.
Item Type: Refine your search to only Report
open access

Effect of tunnel configuration and testing technique on cascade performance

Description: "An investigation has been conducted to determine the influence of aspect ratio, boundary-layer control by means of slots and porous surfaces, Reynolds number, and tunnel end-wall condition upon the performance of airfoils in cascades. A representative compressor-blade section (the NACA 65-(12)(10) of aspect ratios of 1, 2, and 4 has been tested at low speeds in cascades with solid and with porous side walls. Two-dimensional flow was established in porous-wall cascades of each of the three aspe… more
Date: November 30, 1949
Creator: Erwin, John R. & Emery, James C.
Item Type: Refine your search to only Report
open access

Electronics Accomplishment Report

Description: Group 10 - The following items were shipped to Scioto Laboratory: 6 Thyratron Heater Controls (TR-1-A), 2 Switch Boxes (for P & E), 1 Log Amplifier (AM-1); 1 Pulse Generator (PG-1-B). The following are completed, tested, and awaiting transportation: 3 Two-Input B-wall Mixers (MX-2-A), 1 Pulse Generator (PG-1-B),1 Regulation Checker (RC-1) (for plating control power supplies), 1 Preamplifier (AM-2) (for Berkeley decimal scaler). The following are under construction: 6 Pulse Generators (PG-1-B) (… more
Date: September 30, 1949
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
open access

Equations of State of Elements Based on the Generalized Fermi-Thomas Theory

Description: The Fermi-Thomas model has been used to derive the equation of state of matter at high pressures and at various temperatures. Calculations have been carried out both without and with the exchange terms. Discussion of similarity transformations lead to the virial theorem and to correlation of solutions for different Z-values.
Date: April 30, 1949
Creator: Feynman, R. P.; Metropolis, N. & Teller, E.
Item Type: Refine your search to only Report
open access

Flight Investigations at High-Subsonic, Transonic, and Supersonic Speeds to Determine Zero-Lift Drag of Fin-Stabilized Bodies of Revolution having Fineness Ratios of 12.5, 8.91, and 6.04 and Varying Positions of Maximum Diameter

Description: Rocket-powered models were flown at high-subsonic, transonic, and supersonic speeds to determine the zero-lift drag of fin-stabilized parabolic bodies of revolution differing in fineness ratio and in position of maximum diameter. The present paper presents the results for fineness ratio 12.5, 8.91 and 6.04 bodies having maximum diameters located at stations of 20, 40, 60, and 80 percent of body length. All configurations had cut-off sterns and all had equal base, frontal, and exposed fin areas.… more
Date: November 30, 1949
Creator: Hart, Roger G. & Katz, Ellis R.
Item Type: Refine your search to only Report
open access

Investigations at supersonic speeds of 22 triangular wings representing two airfoil sections for each of 11 apex angles

Description: The results of tests of 22 triangular wings, representing two leading-edge shapes for each of 11 apex angles, at Mach numbers 1.62, 1.92, and 1.40 are presented and compared with theory. All wings have a common thickness ratio of 8 percent and a common maximum-thickness point at 18 percent chord. Lift, drag, and pitching moment are given for all wings at each Mach number. The relation of transition in the boundary layer, shocks on the wing surfaces, and characteristics of the pressure distribut… more
Date: March 30, 1949
Creator: Love, Eugene S.
Item Type: Refine your search to only Report
open access

The Machinability of Beryllium

Description: The following report investigates the isolation of the cause of the unusual tool-wear rates found in machining beryllium as attributed to an inherent characteristic of beryllium, or an effect of inclusions in beryllium, as well as the evaluation of the comparative machinability of the various types of beryllium.
Date: April 30, 1949
Creator: Armstrong, E. T.; Dayton, Russell Wendt & Dawes, R. C.
Item Type: Refine your search to only Report
open access

Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Description: Report with two nomograms presented for rapidly obtaining the compound composition of hydrated limes from the oxide analysis. The general nomogram can be applied to any commercial hydrated lime and gives values accurate to within 0.3 percent while the special nomogram is applicable only to regularly hydrated and highly hydrated dolomitic limes and is accurate to within 0.1 percent.
Date: December 30, 1949
Creator: Levin, Ernest M.
Item Type: Refine your search to only Report
open access

Optical Properties of Three Uranium Phosphates

Description: Abstract: "Crystal system, crystal habit, and principal refractive indices, of uranyl hydrogen phosphate tetrahydrate, uranyl ammonium phosphate trihydrate, and uranyl phosphate tetrahydrate are reported. A procedure for differentation of these three compounds using this data was developed."
Date: September 30, 1949
Creator: Harris, W. W. & Scott, Roberta H.
Item Type: Refine your search to only Report
open access

The Path of Carbon in Photosynthesis VI.

Description: This paper is a compilation of the essential results of our experimental work in the determination of the path of carbon in photosynthesis. There are discussions of the dark fixation of photosynthesis and methods of separation and identification including paper chromatography and radioautography. The definition of the path of carbon in photosynthesis by the distribution of radioactivity Within the compounds is described.
Date: June 30, 1949
Creator: Calvin, M.
Item Type: Refine your search to only Report
open access

Performance of Axial-Flow Supersonic Compressor on XJ-55-FF-1 Turbojet Engine 1: Preliminary Performance of Compressor

Description: An investigation was conducted to determine the performance characteristics of the axial-flow supersonic compressor of the XJ-55-FF-1 turbo Jet engine. The test unit consisted of a row of inlet guide vanes and a supersonic rotor; the stator vanes after the rotor were omitted. The maximum pressure ratio produced in the single stage was 2.28 at an equivalent tip speed or 1814 feet per second with an adiabatic efficiency of approximately 0.61, equivalent weight flow of 13.4 pounds per second. The … more
Date: January 30, 1949
Creator: Hartmann, Melvin J. & Graham, Robert C.
Item Type: Refine your search to only Report
open access

Progress Report No. 69. Dec. 15, 1948 to Jan. 15, 1949

Description: This is the progress report for the University of California, Radiation Laboratory for December 15, 1948-January 15, 1949. It discusses the following: (1) Bevatron; (2) 184-inch Cyclotron Program; (3) 60-inch Cyclotron Program; (4) Synchrotron Operation; (5) Linear Accelerator and Van de Graaff Operation; (6) Experimental Physics; (7) Theoretical Physics, (8) Isotope Separation; (9) Chemistry Departments; (10) Medical Physics; and (11) Health Physics and Chemistry.
Date: January 30, 1949
Creator: Authors, Various
Item Type: Refine your search to only Report
open access

Report of the Instrument and Mechanical Development Department on Remote Controls Systems and Optical System for the Maintenance Crane: Job 15

Description: From Foreword: "The program described herein proposed the use of a traveling bridge crane with fixed position, totally enclosed cab, as a means for maintaining and repairing the canyon area of a chemical process plant handling highly radioactive solutions."
Date: June 30, 1949
Creator: Kellex Corporation
Item Type: Refine your search to only Report
open access

Spin-Tunnel Investigation of the Jettisoning of External Fuel Tanks in Spins

Description: "A spin-tunnel investigation has been made to determine the probability of external fuel tanks striking an airplane after being jettisoned in a spin. The investigation showed that for straight-wing fighter-type designs in any case in which jettisoning of tanks in a spin might aid spin recovery the tanks would probably clear all parts of the airplane" (p. 1).
Date: November 30, 1949
Creator: Berman, Theodore
Item Type: Refine your search to only Report
open access

Trip Report, December 16--21, 1949

Description: December 16--20, 1949 were spent in inspection of the equipment of the Naval Pilot Channel Test Rig at the Oak Ridge pile, observation of its maintenance and use, and in discussions with the test operating personnel, and members of the H.P. and pile operating divisions. December 21 was spent at the Argonne National Laboratories, Naval Reactor Division, in inspection of the test rig under construction for use at the H pile. Dr. Etherington requested that I express their desire to arrange that an… more
Date: December 30, 1949
Creator: Snoeberger, D. F.
Item Type: Refine your search to only Report
Back to Top of Screen