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Additional measurements of the low-speed static stability of a configuration employing three triangular wing panels and a body of equal length

Description: From Introduction: "The results of an investigation of the low-speed static stability of a simplified model of such an arrangement having one of the airfoils placed vertically on top of the body and the other two as wing panels having negative dihedral are presented in reference 1. In order to provide information for predicting the effects of changes in the basic configuration on the low-speed stability characteristics presented in reference 1, additional measurements have been made."
Date: July 25, 1955
Creator: Delany, Noel K.
Partner: UNT Libraries Government Documents Department
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Aerodynamic characteristics of a 60 degree delta wing having a half-delta tip control at a Mach number of 4.04

Description: From Introduction: "Numerous tests of tip controls on delta wings at transonic and low supersonic speeds have shown that such configurations provide satisfactory rolling-moment effectiveness, and that the hinge can be controlled by proper location of the hinge line (ref. 1). The purpose of the present tests is to determine the characteristics of such a configuration at Mach number of 4.04 and a Reynolds number of 5.8 X 10^6, based on the wing mean aerodynamic chord."
Date: April 25, 1955
Creator: Ulmann, Edward F. & Smith, Fred M.
Partner: UNT Libraries Government Documents Department
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Analysis of V-G records from ten types of Navy airplanes in squadron operations during the period 1949 to 1953

Description: From Introduction: "The purpose of this paper is to present an analysis of the data for the remaining airplanes where the data were sufficient to warrant analysis. The data analyzed represent totals of 351 to 5660 hours of operations with ten types of Navy airplanes and were recorded during the period 1949 to 1953."
Date: March 25, 1955
Creator: Mayer, John P. & Harris, Agnes E.
Partner: UNT Libraries Government Documents Department
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Atmospheric Contamination Associated with Inert-Gas-Shielded, Consumable Electrode Welding

Description: Apparent excessive concentrations of atmospheric contamination which were reported to be associated with an inert-gas-shielded consumable electrode arc wielding operation were studied to evaluate the potential health hazards. A study was made of the concentrations of metal fume and gaseous products of the operation as well as the spectrum of ultraviolet radiation. Recommendations for necessary controls were made.
Date: July 25, 1955
Creator: Adley, F. E. & Gill, W. E.
Partner: UNT Libraries Government Documents Department
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Contaminated Equipment Renovation Shop. A Preliminary Study

Description: The intent of this study is to establish more completely the justifications for constructing a decontamination plant as outlined in Budget Item B 5720, ``Containmented Equipment Renovation Shop,`` FY 1957, Plant and Equipment Projects. In particular, the economic incentives have been explored. The question or idea has been investigated of assigning a dollar value to engineering information which might be obtained from examining contaminated equipment which has failed from unknown causes. Hereto… more
Date: August 25, 1955
Creator: Hughes, H. R.
Partner: UNT Libraries Government Documents Department
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Development of a new flutter testing technique using a towed dynamic airplane model equipped with an automatic stabilizing system: Experimental and calculated dynamic stability characteristics for speeds up to 200 mph

Description: Report presenting testing of a towed airplane model in the 19-foot pressure tunnel in conjunction with the development of a flutter testing technique. The model was equipped with an autopilot to keep the model flying straight and level in the tunnel while restrained only in drag. Results regarding period and cycles to damp to half amplitude, time histories, and motions of the flexible wing model are provided.
Date: March 25, 1955
Creator: Schneider, William C.
Partner: UNT Libraries Government Documents Department
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Development of the Higgins Continuous Ion Exchange Contactor for the Recovery of Uranium from Leached Ore Pulps

Description: From introduction: "The objective of this report is to present the results and describe the tests of both the 2-in. D and 6-in. D contractors using mill pulp feeds. Work on determining resign attrition is also reported. ORNL-CF-52-12-101 described the results of preliminary tests using synthetic ore pulps."
Date: March 25, 1955
Creator: Higgins, I. R.; Hancher, C. W. & Arehart, T. A.
Partner: UNT Libraries Government Documents Department
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The Effect of Base Bleed on the Base Pressure, Lift, Drag, and Pitching Moment of a 10-Percent-Thick Blunt-Base Airfoil at a Mach Number of 2.72

Description: Report presenting an investigation to measure the effect of base bleed on the base pressure, lift, drag, and pitching moment of a 10-percent-thick blunt-base airfoil model. Small holes near the lower surface near the trailing edge into the base region were used to create base bleed. The drag was reduced as a result of the bleed holes.
Date: January 25, 1955
Creator: Jones, Jim J.
Partner: UNT Libraries Government Documents Department
open access

The Effect of Wing Fences on the Longitudinal Characteristics at High Subsonic Speeds of a Wing-Fuselage-Tail Combination Having a Wing With 40 Degrees of Sweepback and NACA Four-Digit Thickness Distribution

Description: Report presenting a wind-tunnel investigation to determine the effect of lowering the wing from the top of the fuselage to the bottom of the fuselage on the longitudinal characteristics of a wing-fuselage and a wing-fuselage-tail combination with the horizontal tail at various heights above the plane of the wing. The effects of wing height on the longitudinal characteristics of the model were small.
Date: May 25, 1955
Creator: Dickson, Jerald K. & Sutton, Fred B.
Partner: UNT Libraries Government Documents Department
open access

The effect of wing height on the longitudinal characteristics at high subsonic speeds of a wing-fuselage-tail combination having a wing with 40 degrees of sweepback and NACA four digit thickness distribution

Description: Report presenting an investigation to determine the effect of lowering the wing from the top of the fuselage to the bottom of the fuselage on the longitudinal characteristics of a wing-fuselage and wing-fuselage-tail combination with the horizontal tail at various heights above the plane of the wing. Testing occurred at a range of Mach and Reynolds numbers.
Date: May 25, 1955
Creator: Dickson, Jerald K. & Sutton, Fred B.
Partner: UNT Libraries Government Documents Department
open access

Effects of Elevated Temperatures on the Properties of Portland Cement Mixtures Related to Surface Removal and Decontamination

Description: From abstract: The effect of heat on the surface removal of concrete was studied by conducting brush tests on samples which had been subjected to prolonged high temperatures in an oven or in direct contact with an oxy-propane flame. Other methods of heat-treating surface layers of concrete were investigated by direct application of an oxy-aluminum torch on the surface and by the exothermic chemical reactions of pyrotechnic compositions placed directly on the surface.
Date: August 25, 1955
Creator: Heiskell, R. H.; Black, R. H.; Crew, R. J. & Lee, H.
Partner: UNT Libraries Government Documents Department
open access

Effects of Free-Flight Rocket-Model Booster-Adapter Configurations on the Aerodynamic Characteristics in Pitch and Sideslip of a Swept-Wing Fighter Airplane Model at a Mach Number of 2.01

Description: Report presenting the results of a wind-tunnel investigation to determine the effects of various free-flight rocket-model booster-adapter configurations on the aerodynamic characteristics in pitch and sideslip of a swept-wing, fighter airplane model with a Mach number of 2.01. Results regarding the effect of adapter shape and aerodynamic characteristics of the model alone are provided.
Date: March 25, 1955
Creator: Robinson, Ross B.
Partner: UNT Libraries Government Documents Department
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Effects of free-flight rocket-model booster-adapter configurations on the aerodynamic characteristics in pitch and sideslip of a swept-wing fighter airplane model at a Mach number of 2.01

Description: Report presenting results of a wind-tunnel investigation to determine the effects of various free-flight rocket-model booster-adapter configurations on the aerodynamic characteristics in pitch and sideslip of a swept-wing, fighter airplane model for a Mach number of 2.01. Normal-force, lateral-force, pitching-moment, and yawing-moment coefficients of the airplane model were measured, and schileren photographs of the various configurations were obtained.
Date: March 25, 1955
Creator: Robinson, Ross B.
Partner: UNT Libraries Government Documents Department
open access

Effects of spanwise location of sweep discontinuity on the low-speed static lateral stability characteristics of a complete model with wings of M and W plan form

Description: Report presenting an investigation of the low-speed static lateral stability characteristics of a complete model with a series of M- and W-wings. They were modified from a basic 45 degree swept wing and were designed to cover a range of spanwise locations of the sweep discontinuity.
Date: May 25, 1955
Creator: Fournier, Paul G.
Partner: UNT Libraries Government Documents Department
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Experimental investigation of a transonic axial-flow-compressor rotor with double-circular-arc airfoil blade sections 3: comparison of blade-element performance with three levels of solidity

Description: Report presenting testing of two low-solidity transonic axial-flow-compressor rotors tested over a range of speeds up to a corrected tip speed of 1000 feet per second to determine the performance of such rotors and to provide experimental rotor blade-element data for low solidity levels. Comparisons of the hub and mean blade-element losses for the three rotors showed that the losses tended to decrease with a decrease in solidity. Results regarding rotor-inlet conditions, rotor-outlet conditions… more
Date: July 25, 1955
Creator: Schwenk, Francis C. & Lewis, George W., Jr.
Partner: UNT Libraries Government Documents Department
open access

Experimental Static Aerodynamic Forces and Moments at Low Speed on a Missile Model During Simulated Launching From the 25-Percent-Semispan and Wing-Tip Location of a 45 Degree Sweptback Wing-Fuselage Combination

Description: Report presenting an investigation at low speed in the 300 mph tunnel to determine the static aerodynamic forces and moments on a missile model during simulated launching from 25-percent-semispan and wing-tip locations of a wing-fuselage combination. Results regarding the differences in location and effects induced by the fuselage are provided.
Date: May 25, 1955
Creator: Alford, William J., Jr.; Silvers, H. Norman & King, Thomas J., Jr.
Partner: UNT Libraries Government Documents Department
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Flight Characteristics of a Wingless Rocket- Powered Model With Four Externally Mounted Air-to-Air Missiles at Mach Numbers 0.7 to 1.6

Description: Report presenting a flight investigation of four air-to-air missiles mounted by pylons on a rocket-powered basic wingless buffet-research vehicle to determine the trim, buffet, and drag characteristics of the combination.
Date: January 25, 1955
Creator: Henning, Allen B. & Brown, Clarence A., Jr.
Partner: UNT Libraries Government Documents Department
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Flight-determined pressure distributions over a section of the 35 degree swept wing of the Douglas D-558-II research airplane at Mach numbers up to 2.0

Description: From Summary: "Measurements of pressure distributions have been made over a wing midsemispan station on the 35 degree sweptback wing of the Douglas D-558-II research airplane at Mach numbers from 1.17 to 2.0. The results of the investigation indicate that, as the angle of attack increased at the higher Mach numbers, the pressure coefficient for a vacuum limited the extent to which the upper-surface pressures could expand. Consequently most of the increase in section normal-force coefficient at … more
Date: March 25, 1955
Creator: Jordan, Gareth H. & Keener, Earl R.
Partner: UNT Libraries Government Documents Department
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Flight Investigation at Low Angles of Attack to Determine the Longitudinal Stability and Control Characteristics of the Sidewinder Missile at Mach Numbers from 1.2 to 2.1

Description: At the request of the Bureau of Ordnance, Department of the Navy, the Langley Pilotless Aircraft Research Division has initiated a program to investigate the general aerodynamic characteristics of the Naval Ordnance Test Station's SIDEWINDER missile. The model used in the flight test presented herein was a full-scale, rocket-propelled test vehicle. This paper presents the results from a flight test investigation using the pulsed-control technique to determine the static and dynamic longitudinal… more
Date: November 25, 1955
Creator: Brown, Clarence A., Jr.
Partner: UNT Libraries Government Documents Department
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Flight measurements of wing loads on the Convair XF-92A delta-wing airplane

Description: Report presenting a flight investigation at a range of altitudes to determine the wing loads on the Convair XF-92A airplane over the lift range of the airplane at subsonic and transonic speeds. Theoretical lift-curve slope for a delta wing was calculated and compared with the flight data at a Mach number of 0.75.
Date: May 25, 1955
Creator: Kuhl, Albert E. & Johnson, Clinton T.
Partner: UNT Libraries Government Documents Department
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Free-flight investigation, including some effects of wing aeroelasticity, of the rolling effectiveness of an all-movable horizontal tail with differential incidence at Mach numbers from 0.6 to 1.5

Description: Report presenting an investigation to determine the zero-lift rolling effectiveness of all-movable sweptback horizontal tail fins mounted behind a notched delta wing at a constant angle of differential incidence of 7 degree per fin. Two models, one with a stiff wing and one with a flexible wing, were tested in free flight over a range of Mach numbers. The rolling effectiveness was about the same magnitude at subsonic and supersonic speeds for both models.
Date: January 25, 1955
Creator: English, Roland D.
Partner: UNT Libraries Government Documents Department
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Hanford Atomic Products Operation monthly report, December 1954

Description: This document presents a summary of work and progress at the Hanford Engineer Works for December 1954. 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 summarizes work for the Technical, Design, and Project Secti… more
Date: January 25, 1955
Partner: UNT Libraries Government Documents Department
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