UNT Libraries Government Documents Department - 128 Matching Results

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Adhesive and protective characteristics of ceramic coating A-417 and its effect on engine life of forged Refractaloy-26 (AMS 5760) and cast stellite 21 (AMS 5385) turbine blades

Description: The adhesive and protective characteristics of National Bureau of Standards Coating A-417 were investigated, as well as the effect of the coating on the life of forged Refractaloy 26 and cast Stellite 21 turbine blades. Coated and uncoated blades were run in a full-scale J33-9 engine and were subjected to simulated service operations consisting of consecutive 20-minute cycles (15 min at rated speed and approximately 5 min at idle). The ceramic coating adhered well to Refractaloy 26 and Stellite… more
Date: February 12, 1953
Creator: Garrett, Floyd B. & Gyorgak, Charles A.
Item Type: Refine your search to only Report
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An airborne indicator for measuring vertical velocity of airplanes at wheel contact

Description: From Introduction: "The purpose of this paper is to describe one of the means developed for measuring this quantity on a given airplane type- a trailing arm with wheel. A prototype velocity indicator was tested in the Langley impact basin to determine its accuracy. A description of the operation of this type of vertical-velocity indicator, the results of the impact-basin and flight tests, and general evaluation of the indicator are presented herein."
Date: February 1953
Creator: Dreher, Robert C.
Item Type: Refine your search to only Report
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Analysis of several methods of pumping cooling air for turbojet engine afterburners

Description: From Introduction: "Afterburning is well established as an effective means of increasing the thrust of a turbojet engine. In order to obtain the maximum thrust from an afterburner, it is necessary to burn to the highest temperatures possible (reference 1). At these high temperatures, material limitations (reference 2) necessitate the installation of cooling systems to permit safe and reliable operation."
Date: February 2, 1953
Creator: Samuels, John C. & Yanowitz, Herbert
Item Type: Refine your search to only Report
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The Analysis of TBP Process Streams for Calcium with the Flame Photometer

Description: Summary: A method was found for determining calcium concentrations in TBP process streams in spite of serious interferences bysodium, ferrous, uranyl, sulfate, phosphate, and sulfamate ions as well as by TBP. The precision attainable varied from sample to sample, depending upon its composition. In general, errors of 20% or greater occurred. The smallest determinable amount of calcium was about 10 mg/1.
Date: February 20, 1953
Creator: Brite, D. W.
Item Type: Refine your search to only Report
open access

Analytical comparison of turbine-blade cooling systems designed for a turbojet engine operating at supersonic speed and high altitude 1: liquid-cooling systems

Description: Report presenting an investigation of the influence of high-altitude supersonic flight on the operation and effectiveness of turbine-blade liquid-cooling systems for application in turbojet engines in guided missiles and in supersonic aircraft. The problems encountered in liquid-cooling systems were investigated with reference to several specific designs for alternate heat-rejection mediums.
Date: February 20, 1953
Creator: Schramm, Wilson B.; Nachtigall, Alfred J. & Arne, Vernon L.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
open access

Behavior of forged S-816 turbine blades in steady-state operation of J33-9 turbojet engine with stress-rupture and metallographic evaluations

Description: An investigation was conducted to determine the behavior of recently produced, forged S-816 turbine blades in a full-scale turbojet engine, and in particular, the scatter in performance of the alloy. The turbine blades were operated as continuously as possible at a temperature of 1500 degrees F and a centrifugal stress of 21,500 pounds per square inch. The operating lives of the turbine blades varied from 181 to 539 hours, a range of 358 hours. Stress-rupture properties of specimens cut from bl… more
Date: February 12, 1953
Creator: Garrett, Floyd B.; Gyorgak, Charles A. & Weeton, John Waldemar
Item Type: Refine your search to only Report
open access

Calculations of upwash in the region above or below the wing-chord planes of swept-back wing-fuselage-nacelle combinations

Description: Report presenting a procedure for predicting the upwash components of the upflow angles in the region above or below the wing-chord planes of sweptback wing-fuselage-nacelle combinations. Comparisons of predicted and measured upflow angles are shown for six semispan models with 40 degree sweptback wings.
Date: February 1953
Creator: Rogallo, Vernon L. & McCloud, John L., III
Item Type: Refine your search to only Report
open access

A Calorimetric Determination of the Half Life of Polonium-210 (Final Report)

Description: Six determinations have been made of the half life of polonium with four different steady-state, resistance-bridge calorimeters and five different samples of polonium. These six values of the half life have been weighted and combined to give a grand-mean value of the half life of 138.4005 + - 0.0051 days.
Date: February 10, 1953
Creator: Eichelberger, J. F.; Jordan, K. C.; Orr, S. R. & Parks, J. R.
Item Type: Refine your search to only Report
open access

Coulometric Titration Plutonium

Description: Abstract:"A method is described for the electroreduction of plutonium to the +3 valence state in a nitric acid-sulfamic acid solution. Exploratory experiments in the search for a coulometric titration of Pu(III) using electrolytically generated ceric ion are also described. The results strongly indicate that a convenient procedure can be devised. Suggestions for future work are presented."
Date: February 17, 1953
Creator: Dreeben, A. B.
Item Type: Refine your search to only Report
open access

The Determination of Oxygen in Plutonium by the Capillary Trap Method

Description: A new method for the determination of O/sub 2/ in metals is described. The sample is dropped into molten Pt in a graphite crucible. The oxide in the sample reacts with C to form CO, which is swept out by a stream of argon at atmospheric pressure. The CO is oxidized to CO/sub 2/, which is condensed in a capillary trap and measured with a capillary manometer. The apparatus is sensitive to 0.3 mu g of O/sub 2/, and routine 50-mg Pu samples give a standard deviation of 7 ppm or 0.35 mu g. Pu sample… more
Date: February 1, 1953
Creator: Smiley, William G. (William Gooding), 1915-
Item Type: Refine your search to only Report
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Determination of Zirconium and Total Fluoride Ion in Zirconium - Hydrofluoric Acid Solutions

Description: An analytical method has been developed for zirconium and fluoride ions in the system resulting from the dissolution of fuel elements in hydrofluoric acid. The method is based on determination of the density and electrical conductivity of the dissolved metal solution.
Date: February 16, 1953
Creator: Vogler, Seymour; Vogel, Richard C. & Shor, R. W. (Roberta W.)
Item Type: Refine your search to only Report
open access

Dynamics of the Supercritical Water Reactor

Description: From introduction: "The work described in this report was carried out as part of the feasibility study (ORNL-117) of a supercritical water reactor (SCWR) for use in nuclear propulsion of aircraft. The object of this work was to study the dynamic behavior of a particular design of supercritical water reactor. Numerical results are presented in Appendix I."
Date: February 1, 1953
Creator: Goertzel, Gerald, 1919-; Shapiro, Mathew M. & Soodak, Harry
Item Type: Refine your search to only Report
open access

Effect of vertical position of the wing on the aerodynamic characteristics of three wing-body combinations

Description: Report presenting the results of an experimental investigation of three plane wings in combination with a body, which represented both low- and high-wing arrangements. The three wings had different plan forms: a tapered unswept plan form, a tapered 45 degree sweptback plan form, and a triangular plan form. Results regarding the effect of Reynolds number and effect of vertical position of the wing are provided.
Date: February 18, 1953
Creator: Heitmeyer, John C.
Item Type: Refine your search to only Report
open access

Evaluation of Gust Response Characteristics of Some Existing Aircraft With Wing Bending Flexibility Included

Description: Report presenting calculation studies to evaluate the influence that wing bending flexibility has on the structural response to gusts for three twin-engine transports and one four-engine bomber. The manner in which dynamic response factors for acceleration and bending moment vary with different assumed airplane operational factors is shown.
Date: February 1953
Creator: Kordes, Eldon E. & Houbolt, John C.
Item Type: Refine your search to only Report
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