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Results of Diamond Drilling Mesas 1, 2, 3, and 4, Lukachukai Mountains, Northeastern Arizona

Description: From purpose and scope: Diamond drill exploration of the Lukachukai district was undertaken to find minable bodies of uranium ore and to determine whether sufficient reserves were present to warrant construction of a local mill. A minimum of 30,000 feet and a maximum of 50,000 feet of drilling were assigned to block out ore in the discovery area, Mesa I (pl. 1.). It was anticipated that some of the footage might be used to test Mesa II should the area become accessible. With access to Mesas II … more
Date: September 18, 1951
Creator: Stafford, Howard S.
Partner: UNT Libraries Government Documents Department
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Carbon Anodes for Fluorine Cells

Description: No Description Available.
Date: June 18, 1951
Creator: McLaren, James
Partner: UNT Libraries Government Documents Department
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THE TECHNOLOGY OF THORIUM

Description: No Description Available.
Date: July 18, 1951
Creator: March, L.L. Jr. & Keeler, J.R.
Partner: UNT Libraries Government Documents Department
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Adaptation of a Cascade Impactor to Flight Measurement of Droplet Size in Clouds

Description: "A cascade impactor, an instrument for obtaining the size distribution of droplets borne in a low-velocity air stream, was adapted for flight cloud droplet-size studies. The air containing the droplets was slowed down from flight speed by a diffuser to the inlet-air velocity of the impactor" (p. 1).
Date: September 18, 1951
Creator: Levine, Joseph & Kleinknecht, Kenneth S.
Partner: UNT Libraries Government Documents Department
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Spark Ignition of Flowing Gases. 2: Effect of Electrode Parameters on Energy Required to Ignite a Propane-Air Mixture

Description: From Summary: "Research was conducted to determine the effect of the electrode parameters of spacing, configuration, and material' on the energy required for ignition of a flowing propane-air mixture. In addition, the data were used to indicate the energy distribution along the spark length and to confirm previous observations concerning the effect of spark duration on ignition energy requirements. The data were obtained with a mixture at a fuel-air ratio of 0.0835 (by weight), a pressure of 3 … more
Date: December 18, 1951
Creator: Swett, Clyde C., Jr.
Partner: UNT Libraries Government Documents Department
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Evaluation of Centrifugal Compressor Performance With Water Injection

Description: The effects of water injection on a compressor are presented. To determine the effects of varying water-air ratio, the compressor was operated at a constant equivalent impeller speed over a range of water-air ratios and weight flows. Operation over a range of weight flows at one water-air ratio and two inlet air temperatures was carried out to obtain an indication of the effects of varying inlet air temperature. Beyond a water-air ratio of 0.03 there was no increase in maximum air-weight flow, … more
Date: July 18, 1951
Creator: Beede, William L.; Hamrick, Joseph T. & Withee, Joseph R., Jr.
Partner: UNT Libraries Government Documents Department
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Flame velocities over a wide composition range for pentane-air, ethylene-air, and propyne-air flames

Description: Fundamental flame velocities are reported for pentane air, ethylene-air, and propylene-air mixtures for the concentration range 60 to 130 percent of stoichiometric. A form of the Tanford and Pease equation, which includes a small constant velocity term independent of diffusion, will predict the observed changes in flame velocity.
Date: October 18, 1951
Creator: Simon, Dorothy M. & Wong, Edgar L.
Partner: UNT Libraries Government Documents Department
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A comparison of the experimental and theoretical loading over triangular wings in sideslip at supersonic speeds

Description: The results of an experimental investigation of the load distribution over two triangular wings in sideslip at Mach numbers from 1.20 to 1.79 are presented and compared with theory. The two wings tested have identical plan form, 45 degrees sweepback of the leading edge, and an aspect ratio of 4.0. One model was composed of round-nose airfoil sections and the other of sharp-nose, biconvex sections. For both wings the maximum thickness of streamwise sections was 6 percent and was located at the 3… more
Date: May 18, 1951
Creator: Boyd, John W.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Investigation of a Submerged Inlet and a Nose Inlet in the Transonic Flight Range With Free-Fall Models

Description: Memorandum presenting an NACA submerged inlet and an NACA series I nose inlet installed in bodies of 12.4 fineness ratio to determine the drag and pressure-recovery characteristics of each body-inlet configuration. The tests were conducted with large-scale free-fall models released at an altitude of 40,000 feet, for mass-flow ratios of about 0.4 and 0.7 over a Mach number range of about 0.70 to 1.10. Results regarding drag and ram-recovery ratios are provided.
Date: June 18, 1951
Creator: Selna, James
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic study of a wing-fuselage combination employing a wing swept back 63 degrees : effectiveness at supersonic speeds of a 30-percent chord, 50-percent semispan elevon as a lateral control device

Description: Report presenting the effectiveness of a 50-percent-semispan, constant-percent-chord elevon, and of upper-space spoilers as lateral control surfaces for a wing-fuselage combination with a wing swept back 63 degrees over a range of Mach numbers. For the elevon, results indicated that only about half of the predicted rolling-moment effectiveness was realized. The spoilers were found to be inferior to the elevons for lateral control because of a rapid loss of effectivness above an angle of attack … more
Date: January 18, 1951
Creator: Olson, Robert N. & Mead, Merrill H.
Partner: UNT Libraries Government Documents Department
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Effects of spanwise thickness variation on the transonic aerodynamic characteristics of wings having 35 degrees of sweepback, aspect ratio 4, and taper ratio 0.60

Description: Report presenting an investigation in the high speed 7- by 10-foot tunnel to determine the effects of a spanwise variation in thickness ratio on the aerodynamic characteristics of a wing with a plan form identical to that of a constant-percent thickness-ratio wing program. The wing with thickness variation had 35 degrees of sweepback, aspect ratio 4, and taper ratio of 0.60 with airfoil section tapered from an NACA 65A006 section at the root chord to an NACA 65A002 section at the tip chord. Res… more
Date: September 18, 1951
Creator: Morrison, William D., Jr. & Fournier, Paul G.
Partner: UNT Libraries Government Documents Department
open access

Effects of humidity during fabrication on some physical properties of glass-fabric unsaturated-polyester laminates

Description: Effects of humidity during fabric conditioning and during fabrication upon some physical properties of laminates prepared with glass fabric and an unsaturated polyester resin were investigated. Tests on these laminates included the measurement of flexural strength on the diagonal, both dry and after 7 days' immersion in water, specific gravity, resin content, percentage of voids, and total light transmission. Some data were also taken on lengthwise flexural strength.
Date: July 18, 1951
Creator: Wier, John E.; Pons, Dorothy C. & Axilrod, Benjamin M.
Partner: UNT Libraries Government Documents Department
open access

A Preliminary Investigation of Combustion With Rotating Flow in an Annular Combustion Chamber

Description: Memorandum presenting a preliminary investigation of flame-stability and flame-extinction characteristics of a propane-air mixture in an annular combustion chamber conducted with both straight and rotational flow. The rotating mixture burned at higher axial-inlet stream velocities and with more stable flames than could be obtained with straight-flow burning.
Date: September 18, 1951
Creator: Schwartz, Ira R.
Partner: UNT Libraries Government Documents Department
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Characteristics of a Transonic Test Section With Various Slot Shapes in the Langley 8-Foot High-Speed Tunnel

Description: Report presenting a large wind tunnel that has been converted to transonic operation by means of slots in the boundary extending in the direction of flow. The usefulness of a slotted wind tunnel has been augmented by devising a slot shape with which a supersonic test region with excellent flow quality can be produced.
Date: October 18, 1951
Creator: Wright, Ray H. & Ritchie, Virgil S.
Partner: UNT Libraries Government Documents Department
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Experimental investigation of air-cooled turbine blade in turbojet engine 8: rotor blades with capped leading edges

Description: An air-cooled turbine blade with a capped leading edge was investigated in a modified commercial turbojet engine over a range of engine speed from 4000 to 11,350 rpm. The cooling performance of the caped-leading-edge configuration was superior to all leading-edge cooling modifications previously investigated.
Date: October 18, 1951
Creator: Smith, Gordon T. & Hickel, Robert O.
Partner: UNT Libraries Government Documents Department
open access

Methods for Connection to Revolving Thermocouples

Description: Memorandum presenting several new methods that have been designed for obtaining electrical connection to thermocouples that are revolving at high speeds. Two general types of pickup system are described with modifications for special installations. Both pickup systems have been proved to transmit an accurate signal from a revolving thermocouple to within 0.045 millivolt at contact sliding speeds up to 5400 feet per minute.
Date: January 18, 1951
Creator: Tarr, Philip R.
Partner: UNT Libraries Government Documents Department
open access

Interim report No. 1 on Production Test 105-407-P -- Pile test of magnesium front dummies

Description: The inlet portions of pile process tubes, which originally contained a pattern of aluminum dummy slugs, have been reported subject to pitting corrosion since the removal of the slugs. This corrosion is more severe than that found in the other portions of the tubes. The insertion of magnesium dummy slugs has been recommended to arrest this corrosion. A pile test of the effect of magnesium dummies is in progress and preliminary results are reported. Current-voltage relationships between magnesium… more
Date: December 18, 1951
Creator: Lewis, M. & Goldsmith, S.
Partner: UNT Libraries Government Documents Department
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