Technical Report Archive & Image Library (TRAIL) - 1,335 Matching Results

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Effects of conical camber on the lift, drag, and pitching-moment characteristics of a triangular wing of aspect ratio 3.0

Description: Report presenting the results of an investigation to determine the effects of conical camber on the lift, drag, and pitching-moment characteristics of a wing-body combination with a triangular wing of aspect ratio 3.0. At subsonic speeds, the use of camber was found to result in substantial reductions in drag coefficients at lift coefficients above 0.15.
Date: February 19, 1957
Creator: Peterson, Victor L. & Boyd, John W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of turbines suitable for use in a turbojet engine with high compressor pressure ratio and low compressor-tip speed 8: Internal flow conditions of a two-stage turbine with a downstream stator

Description: Report presenting an investigation of a two-stage turbine with a downstream stator to determine the interstage flow conditions of the turbine. Results regarding stage efficiency and work output, first-stage performance, second-stage performance, and downstream-stator performance are provided.
Date: November 13, 1957
Creator: Petrash, Donald A.; Davison, Elmer H. & Schum, Harold J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Component performance investigation of J71 experimental turbine 8: effect of first-stator adjustment; internal flow conditions of J71-97 turbine with 70-percent-design stator area

Description: Results of a survey investigation of the J71-97 experimental three-stage turbine equipped with a first-stator area 70 percent pf design are presented and compared with the turbine with a first-stator area 97 percent of design.
Date: January 18, 1957
Creator: Petrash, Donald A.; Schum, Harold J. & Davison, Elmer H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerodynamic and hydrodynamic characteristics of a proposed supersonic multijet water-based hydro-ski aircraft with a variable-incidence wing

Description: From Introduction: "The configuration described in this paper represents one approach to such an airplane and the results of the wind-tunnel and tank evaluations are presented. In the present investigation, the aerodynamic longitudinal characteristics over a Mach number range from 0.6 to 1.97 were obtained."
Date: October 23, 1957
Creator: Petynia, William W.; Hasson, Dennis F. & Spooner, Stanley H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Wind-Tunnel Investigation of the Effects of Conical Camber for an Airplane Configuration Having a Triangular Wing of Aspect Ratio 2.2

Description: Memorandum presenting the results of an investigation directed at determining the effectiveness of various amounts and spanwise extents of conical camber on the aerodynamic characteristics of a wing-body-tail combination employing a triangular wing of aspect ratio 2.2. Five cambered wings were tested, all of which were designed for a Mach number of 1.0. Results regarding drag characteristics and lift and moment characteristics are provided.
Date: April 30, 1957
Creator: Phelps, E. Ray & Boyd, John W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isolation and Identification of an Ester from a Crude Oil

Description: Abstract: "A dioctylphthalate has been isolated from a crude oil by means of adsorption column chromatography. The ester was identified by means of elemental analysis, refractive index, and its infrared adsorption spectrum. Saponification of the isolate and examination of the resultant alcohol by means of infrared adsorption spectra led to the conclusion that the ester is a branched chain dioctylphthalate. This is the first reported occurrence of an ester in crude petroleum."
Date: December 1957
Creator: Phillips, Harry F. & Breger, Irving A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion Studies

Description: The following report focuses on the first run in a series of corrosion reports testing a solution of .5 M UO3 in 85% H3PO4.
Date: 1957
Creator: Phillips, John R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review and Investigation of Unsatisfactory Control Characteristics Involving Instability of Pilot-Airplane Combination and Methods for Predicting These Difficulties From Ground Tests

Description: Report presenting tests of a bomber and fighter airplane with experimental power control systems in order to explore some unsatisfactory control characteristics that seem to result from dynamic instability. The main explanation found in testing was the presence of static friction in the control valves of hydraulic-power control systems.
Date: August 1957
Creator: Phillips, William H.; Brown, B. Porter & Matthews, James T., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Interference Effects of Fuselage-Stored Missiles on Inlet Duct Model of an Interceptor-Type Aircraft at Mach Numbers 1.5 to 1.9

Description: Memorandum presenting the effect of missile armament on the performance of an interceptor-type aircraft model at Mach numbers 1.5, 1.7, and 1.9 and at angles of attack up to 19 degrees. The aircraft model was characterized by triangular-shaped normal-shock inlets located at wing roots. Results regarding force measurements, effect of armament on inlet-duct performance, fuselage boundary-layer survey, and total-pressure contours at inlet throat and diffuser exit are provided.
Date: April 24, 1957
Creator: Piercy, Thomas G. & Davis, Owen H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Note on the Ability to Predict Transonic Drag-Rise Changes Due to Model Modifications

Description: Memorandum presenting an experimental and analytical study made at transonic speeds up to Mach number 1.43 to determine the ability of present calculation procedures to predict transonic drag-rise changes which result from physical model changes. Both wing-body and wing-body-tail configurations were investigated.
Date: October 3, 1957
Creator: Pierpont, P. Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Note on the Ability to Predict Transonic Drag-Rise Changes Due to Model Modifications

Description: Report presenting an experimental and analytical study at transonic speeds up to Mach number 1.43 to determine the ability of present calculation procedures to predict transonic drag-rise changes resulting from physical model changes. Results regarding wing-body configurations, wing-body-tail configurations, and drag-rise change are provided. With the exception of the model with the bluff forebody and afterbody, the currently available calculative procedures provided estimates of transonic drag… more
Date: October 3, 1957
Creator: Pierpont, P. Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transonic Wind-Tunnel Investigation of Static Longitudinal Stability and Control Characteristics and Drag of a 0.05-Scale Model of the Chance Vought XF8U-3 Airplane : TED No. NACA AD 3133

Description: "A transonic wind-tunnel investigation was made in the Langley 8-foot transonic pressure tunnel at the request of the Bureau of Aeronautics, Department of the Navy, of the static longitudinal stability and control characteristics and drag of a 0.05-scale model of the Chance Vought XF8U-3 airplane at Mach numbers from 0.80 to 1.20 with an average Reynolds number of 2.6 x 10(exp 6). The investigation included effects of the addition of the ventral fins, extension and removal of the missiles, defl… more
Date: September 20, 1957
Creator: Pierpont, P. Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Radioactive Minerals in the Southern Part of Brazil

Description: From introduction: This report describes the results of reconnaissance for radioactivity of rocks, exclusive of coal, in the States of Rio de Janeiro, Sao Paulo, Parana, Santa Catarina and Rio Grande do Sul during the years 195 through 1956. Reports on reconnaissance and detailed studies of uraniferous coal are being prepared for publication. This report concerns work performed by the Brazilian National Nuclear Energy Commission and the United States Geological Survey (on behalf of the United S… more
Date: January 1957
Creator: Pierson, Charles Thomas; Haynes, Donald D. & Ribeiro Filho, Evaristo
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear Decay Schemes in the Actinium Family

Description: Abstract: "With magnetic alpha-particle and electron high-resolution spectrographs and scintillation gamma-ray spectrometers, a study was made of the nuclear decay of a number of members of the actinium family - U-235, Th-227, Ra-223, Em-219, Po-215, and Bi-211. Decay schemes are presented for each of these nuclides, together with such correlations as are possible with present theoretical nuclear models. The decay scheme of U-235 and a portion of that of Th-227 are interpretable in terms of the… more
Date: July 1957
Creator: Pilger, Richard Christian, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Seat Design for Crash Worthiness

Description: "A study of many crash deceleration records suggested a simplified model of a crash deceleration pulse, which incorporates the essential properties of the pulse. The model pulse is considered to be composed of a base pulse on which are superimposed one or more secondary pulses of shorter duration. The results of a mathematical analysis of the seat-passenger deceleration in response to the airplane deceleration pulse are provided. On the basis of this information, presented as working charts, th… more
Date: 1957
Creator: Pinkel, I. Irving & Rosenberg, Edmund G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Origin and Prevention of Crash Fires in Turbojet Aircraft

Description: The manner in which the jet engine may start a crash fire was explored in test-stand and full-scale crash studies. On the basis of these studies, a method was devised for inserting and cooling the engine parts that may serve as ignition sources in crash. This method was tried successfully in full-scale crashes of jet-powered airplanes carrying engines in pod nacelles and engines buried within the airplane structure.
Date: May 1957
Creator: Pinkel, I. Irving; Weiss, Solomon; Preston, G. Merritt & Pesman, Gerard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Origin and Prevention of Crash Fires in Turbojet Aircraft

Description: "The tendency for the jet engine rotor to continue to rotate after crash presents the probability that crash-spilled combustibles suspended in the air or puddled on the ground at the engine inlet may be sucked into the engine. Studies with jet engines operating on a test stand and full-scale crashes of turbojet-powered airplanes showed that combustibles drawn into the engine in this way ignite explosively within the engine. Experiment showed that the gas flow through the engine is too rapid to … more
Date: January 18, 1957
Creator: Pinkel, I. Irving; Weiss, Solomon; Preston, G. Merritt & Pesman, Gerard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiative Capture of Protons in Ne²⁰

Description: Abstract: "A preliminary measurement of the Ne²⁰(p,γ)Na²¹ reaction cross section has been made. Targets were prepared by bombarding aluminum targets with neon ions. The neon concentration in the target was determined by elastic scattering of 1.5-Mev-protons. The yield of positrons from the reaction Ne²⁰(p,γ)Na²¹(β)Ne²¹ was identified by the 23-second half life of Na²¹."
Date: October 16, 1957
Creator: Pixley, R. E.; Hester, R. E. & Lamb, W. A. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Deflection Equations for Various Loading of Circular-Arc Curved Beams

Description: In analyzing stresses, deflections, and forces in piping and certain structural systems, it is useful to have a set of equations giving the deflections at any point of a curved beam in terms of the various loads acting on the beam. This technical report presents the deflection equations for a curved circular-arc beam of variable length. The cases treated include in-plane and out-of-plane bending due to forces and moments applied to the end of the beam in three principal directions, and uniforml… more
Date: April 22, 1957
Creator: Platus, D. L. & Greenstreet, B. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design and experimental investigation of a single-stage turbine with a downstream stator

Description: The high-work-output turbine had an experimental efficiency of 0.830 at the design point and a maximum efficiency of 0.857. The downstream stator was effective in providing axial flow out of the turbine for almost the whole range of turbine operation.
Date: January 25, 1957
Creator: Plohr, Henry W.; Holeski, Donald E. & Forrette, Robert E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Nose Shape on Subsonic Aerodynamic Characteristics of a Body of Revolution Having a Fineness Ratio of 10.94

Description: Memorandum presenting a determination of the effect of nose shape on the normal-force, pitching-moment, and axial-force coefficients of a body of revolution with a fineness ratio of 10.94 as determined at subsonic speeds. Six nose shapes were investigated, which included flat-faced noses with various corner radii, a hemispherical nose, and two ogival noses.
Date: August 12, 1957
Creator: Polhamus, Edward C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transistors: Counters

Description: Abstract: "Two transistor plug-in decade counters are described, one of which operates over the SCS-7 temperature range. A transistor digital scanner with storage and parallel readout is described. It utilizes one of the plug-in decades. A simple design procedure for flip-flops is presented."
Date: May 29, 1957
Creator: Pollard, Neith
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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