37 Matching Results

Search Results

Results: 1 - 24 next
open access

An experimental study of five annular air inlet configurations at subsonic and transonic speeds

Description: Report presenting an investigation of an NACA 1-80-100 nose inlet fitted alternately with an elliptical, a parabolic, a 14 degree-inch conical, and a 22 degree-inch conical central body at subsonic and transonic speeds in the 8-foot transonic tunnel. Drag, surface-pressure, and pressure-recovery measurements were obtained at 0 degrees angle of attack through a range of Mach numbers. Results regarding tunnel boundary interference, surface-pressure distribution, external drag, pressure recovery, … more
Date: August 19, 1953
Creator: Pendley, Robert E.; Milillo, Joseph R.; Fleming, Frank F. & Bryan, Carroll R.
Partner: UNT Libraries Government Documents Department
open access

Sodium dichromate as a process water additive: An evaluation

Description: For several years-after the start-up of the Hanford Piles, little concern was felt for the quality of process water. Techniques developed by CMX and improved in the course of operating experience were substantially successful for controlling and removing pressure drop film; and corru%ion rates at the early power levels were uniformly low and not a matter of concern, particularly since slugs were not exposed for more than 250 MWD/ton. As power and exposure levels were drastically increased, howe… more
Date: March 19, 1953
Creator: Lutton, J. M.
Partner: UNT Libraries Government Documents Department
open access

Hanford Atomic Products Operation monthly report, May 1953

Description: This document presents a summary of work and progress at the Hanford Engineer Works for May 1953. The report is divided into sections by department. A plant wide general summary is included at the beginning of the report, after which the departmental summaries begin. The Manufacturing Department reports plant statistics, and summaries for the Metal Preparation, Reactor and Separation sections. The Engineering Department`s section summaries work for the Technical, Design, and Project Sections. C… more
Date: June 19, 1953
Partner: UNT Libraries Government Documents Department
open access

REACTION RATE OF SOLID SODIUM WITH AIR

Description: No Description Available.
Date: October 19, 1953
Creator: Howland, W.H. & Epstein, L.F.
Partner: UNT Libraries Government Documents Department
open access

Report of the Thirty-Seventh National Conference on Weights and Measures, 1952

Description: Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: March 19, 1953
Creator: United States. National Bureau of Standards.
Partner: UNT Libraries Government Documents Department
open access

Theoretical Prediction of Pressure Distributions on Nonlifting Airfoils at High Subsonic Speeds

Description: "Theoretical pressure distributions on nonlifting circular-arc airfoils in two-dimensional flows with high subsonic free-stream velocity are found by determining approximate solutions, through an iteration process, of an integral equation for transonic flow proposed by Oswatitsch. The integral equation stems directly from the small-disturbance theory for transonic flow. This method of analysis possesses the advantage of remaining in the physical, rather than the hodograph, variable and can be a… more
Date: November 19, 1953
Creator: Spreiter, John R. & Alksne, Alberta
Partner: UNT Libraries Government Documents Department
open access

An Analysis of a Nuclear Powered Supercritical-Water Cycle for Aircraft Propulsion

Description: Memorandum presenting an analysis to indicate the feasibility of the supercritical water compressor jet cycle for nuclear powered aircraft. Performance values of the cycle are given for a range of design-point engine operating conditions and subsonic flight conditions.
Date: January 19, 1953
Creator: Karp, Irving M.
Partner: UNT Libraries Government Documents Department
open access

Measurement and Analysis of Turbulent Flow Containing Periodic Flow Fluctuations

Description: Memorandum presenting techniques for the measurement of the energy spectrum of flow fluctuations in both axial and lateral flow directions. A simple spectrum analysis is presented by which quantitative distinction may be made between turbulence and the flow disturbances associated with sound waves in ducts. Results regarding the measurement and analysis of turbulent-flow fields containing random and periodic flow fluctuations, effect of random sound disturbances on turbulence spectrum, and effe… more
Date: August 19, 1953
Creator: Mickelsen, William R. & Laurence, James C.
Partner: UNT Libraries Government Documents Department
open access

Rocket Engine Starting With Mixed Oxides of Nitrogen and Liquid Ammonia by Flow-Line Additives

Description: Memorandum presenting an investigation of the starting characteristics of mixed oxides of nitrogen - liquid ammonia rocket engines with light metal additives in the ammonia flow line for ignition. The oxidant consisted of 70 percent by weight nitrogen tetroxide and 30 percent nitric oxide. Results regarding the ignition experiments with 100-pound-thrust engine, 1000-pound-thrust engine experiments, and low-temperature experiments are provided.
Date: August 19, 1953
Creator: Kinney, George R.; Humphrey, Jack C. & Hennings, Glen
Partner: UNT Libraries Government Documents Department
open access

Analytical comparison of turbine-blade cooling systems designed for a turbojet engine operating at supersonic speed and high altitude 2: air-cooling systems

Description: Report presenting an investigation of the influence of high-altitude supersonic flight on the operation and effectiveness of turbine-blade air- and liquid-cooling systems for turbojet application in guided missiles and supersonic interceptor aircraft. Results regarding the coolant passage heat-transfer-coefficients, nonrefrigerated air-cooling-system characteristics, and refrigerated-air-cooling-system characteristics are provided.
Date: February 19, 1953
Creator: Schramm, Wilson B.; Arne, Vernon L. & Nachtigall, Alfred J.
Partner: UNT Libraries Government Documents Department
open access

Techniques for determining thrust in flight for airplanes equipped with afterburners

Description: From Summary: "An experimental technique has been developed which enables a determination of the net propulsive force acting on an afterburner-equipped airplane in flight. The thrust measurement is based on the variation of static and total pressure and stagnation temperature across the fuselage exit as determined by a swinging pitot-static pressure and temperature probe. The details are also presented for an air-cooled fixed-pressure probe for the determination of basic engine thrust."
Date: January 19, 1953
Creator: Rolls, L. Stewart; Havill, C. Dewey & Holden, George R.
Partner: UNT Libraries Government Documents Department
open access

Ignition delays of some nonaromatic fuels with low-freezing red fuming nitric acid in temperature range -40 to -105 degrees F

Description: From Summary: "With low-freezing red fuming nitric acid in a modified open-cup apparatus, ignition delays were determined in the temperature range -40 degrees to -105 degrees Fahrenheit for allylamine, disallylamine, mixed alkyl thiophosphites, ethylenimine, blends of each of these fuels with triethylamine, and blends of ehtylenimine with n-heptane. The data indicate that allylamine, mixed alkyl thiophosphites, and ehtylenimine can be blended with as much as 70 percent triethylamine and still i… more
Date: January 19, 1953
Creator: Miller, Riley O.
Partner: UNT Libraries Government Documents Department
open access

Summary Report on Analytical Evaluation of Air and Fuel Specific-Impulse Characteristics of Several Nonhydrocarbon Jet-Engine Fuels

Description: Memorandum presenting an analytical evaluation of the air and fuel specific-impulse characteristics of magnesium, magnesium-octene-1 slurries, aluminum, aluminum-octene-1 slurries, boron, boron-octene-1 slurries, carbon, hydrogen, methylnaphthalene, diborane, and pentaborane. Adiabatic constant-pressure combustion temperature, air specific impulse, fuel specific impulse, and equilibrium composition data are given for each fuel over a range of equivalence ratios.
Date: February 19, 1953
Creator: Breitwieser, Roland; Gordon, Sanford & Gammon, Benson
Partner: UNT Libraries Government Documents Department
open access

A flight comparison of a submerged inlet and a scoop inlet at transonic speeds

Description: Report presenting flight tests conducted on two different inlet configurations, a submerged divergent-wall inlet and scoop inlet, to determine their characteristics when installed on a YF-93 airplane. Measurements were made of the pressure-recovery characteristics of the inlets and overall airplane drag for each configuration. Results regarding the induction-system efficiency, airplane drag, and a relative comparison of the inlet installations are provided.
Date: March 19, 1953
Creator: Rolls, L. Stewart
Partner: UNT Libraries Government Documents Department
open access

Investigation at supersonic speeds of an inlet employing conical flow separation from a probe ahead of a blunt body

Description: Report presenting an investigation in the supersonic wind tunnel on an inlet employing conical flow separation from a probe extending upstream from a hemispherical-nosed centerbody. Pressure-recovery and drag characteristics for the inlet were very nearly comparable with a conical-spike inlet, but compared less favorably at Mach numbers below 2.0. A large reduction in pressure recovery and mass flow was obtained at angle of attack.
Date: January 19, 1953
Creator: Hearth, Donald P. & Gorton, Gerald C.
Partner: UNT Libraries Government Documents Department
open access

Calculation of Aerodynamic Forces on an Inclined Dual-Rotating Propeller

Description: Report presenting a method for calculating the aerodynamic forces on the blades of a dual-rotating propeller with its thrust axis inclined to the air stream. Comparison of the fluctuating aerodynamic forces due to pitched or yawed operation of a dual-rotating propeller show that the fluctuation in forces on the front component tend to be greater than those on the rear component.
Date: June 19, 1953
Creator: Crigler, John L. & Gilman, Jean, Jr.
Partner: UNT Libraries Government Documents Department
open access

Effect of Reduction in Thickness From 6 to 2 Percent and Removal of the Pointed Tips on the Subsonic Static Longitudinal Stability Characteristics of a 60-Degree Triangular Wing in Combination With a Fuselage

Description: Report presenting an investigation to determine the effects on lift, drag, and pitching moment of a reduction of the thickness ratio of a triangular wing at a range of Mach numbers and Reynolds numbers. Removing the outer 24.9 percent of the span of a wing was also explored.
Date: August 19, 1953
Creator: Palmer, William E.
Partner: UNT Libraries Government Documents Department
open access

Measurement and analysis of turbulent flow containing periodic flow fluctuations

Description: Report presenting techniques for the measurement of the energy spectrum of flow fluctuations in both axial and lateral flow directions. Data indicated that the energy spectrum of the turbulence is not affected by periodic and random sound disturbances outside the frequency containing the disturbances.
Date: August 19, 1953
Creator: Mickelsen, William R. & Laurence, James C.
Partner: UNT Libraries Government Documents Department
open access

Investigation of a supersonic-compressor rotor with turning to axial direction 1: rotor design and performance

Description: Report presenting an approximate, quasi-three-dimensional design procedure adapted to the design of high solidity, impulse-type supersonic compressors. The method is applied to a compressor rotor with a tip speed of 1600 feet per second in air, an inlet hub-tip radius ratio of 0.75, and an axial discharge relative to the rotor. Results regarding the overall performance, rotor-entrance conditions, static-pressure profiles, discharge conditions, and discharge surveys are provided.
Date: August 19, 1953
Creator: Tysl, Edward R.; Klapproth, John F. & Hartmann, Melvin J.
Partner: UNT Libraries Government Documents Department
open access

An experimental investigation of the effect of various parameters including tip Mach number on the flutter of some model helicopter rotor blades

Description: Report presenting studies of some of the effects of parameters such as Mach number, blade angle, and structural damping on the flutter of model helicopter rotor blades in the hovering condition. Forward movement of the blade chordwise center-of-gravity location tended to raise the flutter speeds at low pitch angles, but had no effect at high pitch angles. The significant flutter data for the tests along with detailed descriptions of the models are included to facilitate more detailed analyses.
Date: June 19, 1953
Creator: Brooks, George W. & Baker, John E.
Partner: UNT Libraries Government Documents Department
open access

The Langley annular transonic tunnel

Description: Report describes the development of the Langley annular transonic tunnel, a facility in which test Mach numbers from 0.6 to slightly over 1.0 are achieved by rotating the test model in an annular passage between two concentric cylinders. Data obtained for two-dimensional airfoil models in the Langley annular transonic tunnel at subsonic and sonic speeds are shown to be in reasonable agreement with experimental data from other sources and with theory when comparisons are made for nonlifting cond… more
Date: January 19, 1953
Creator: Habel, Louis W.; Henderson, James H. & Miller, Mason F.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen