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The Effect of External Stiffening Ribs on the Rolling Power of Ailerons on a Swept Wing

Description: Report presenting an investigation to determine the effects of external ribs, or load carrying fences, on the rolling effectiveness and drag on swept wings of two different stiffnesses. The primary effect of adding fences was a decrease in torsional flexibility and an increase in zero-lift rolling effectiveness. The aerodynamic effects on zero-lift rolling effectiveness due to adding fences are negligible.
Date: October 25, 1956
Creator: Stephens, Emily W.
Partner: UNT Libraries Government Documents Department
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Experimental Investigation of the Aerodynamic Loading on a Helicopter Rotor Blade in Forward Flight

Description: Memorandum presenting an experimental investigation of the aerodynamic loading on one blade and of a two-blade teetering rotor conducted in forward flight for a tip-speed-ratio range of 0.08 to 0.29 at a disk loading of about 2.4 pounds per square foot and a tip speed of about 480 feet per second. Chordwise loading distributions at five spanwise stations and the variation of section loading and total blade lift with azimuth position are presented. Results regarding the performance data, section… more
Date: October 25, 1956
Creator: Rabbott, Robert P., Jr. & Churchill, Gary B.
Partner: UNT Libraries Government Documents Department
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An experimental study of the zero-angle-of attack transonic drag associated with the vertical position of a horizontal tail at zero incidence

Description: Report presenting a study of the transonic drag associated with varying the vertical location of the horizontal tail of a representative tail-body combination. Factors which significantly influenced the results were flow separation in the horizontal tail-body juncture, afterbody-tail-interference pressure drag, and a downwash over the horizontal tail which resulted from the boundary conditions of the converging afterbody.
Date: October 25, 1956
Creator: Howell, Robert R.
Partner: UNT Libraries Government Documents Department
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Flight measurements of the low-speed characteristics of a 35 degree swept-wing airplane with blowing-type boundary-layer control in the trailing-edge flaps

Description: Report presenting tests to determine the flight characteristics of an F-86 airplane equipped with a blowing-type boundary-layer-control installation on the trailing-edge flaps. The effectiveness of the flap was determined in conjunction with slatted leading edges and an inflatable rubber boot on the leading edge. Measurements were made of lift, drag, flow requirements, and computations for take-off, climb, and landing.
Date: October 25, 1956
Creator: Anderson, Seth B.; Quigley, Hervey C. & Innis, Robert C.
Partner: UNT Libraries Government Documents Department
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ORNL ceramic information meeting trip report, October 1--3, 1956

Description: The meeting was opened by Leo Brewer, who spoke on a ``Self-Purifying Reactor.`` This is a reactor with theoretically designed-in separations processes, involving calculations to show that it is possible to vaporize many fission products away from fuels. The reactor would be analogous to a graphite rod impregnated with a uranium or thorium compound, vapor-coated with zirconium, and cooled by liquid metal. The fission products will vaporize when the rod gets hot enough, and will be carried out o… more
Date: October 25, 1956
Creator: O`Leary, W. J.
Partner: UNT Libraries Government Documents Department
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The Subsonic Lateral and Longitudinal Static Stability Characteristics Up to Large Angles of Sideslip for a Triangular-Wing Airplane Model Having a Ventral Fin

Description: "Wind-tunnel tests were conducted to determine the effects of a ventral fin on the static characteristics of a triangular-wing airplane model. Data were obtained for angles of sideslip up to 18 degrees at angles of attack of 0, 6, 12, and 18 degrees at Mach numbers from 0.25 to 0.94. The results of the tests indicated that the ventral fin did not produce as much yawing moment per unit of exposed area at any angle of sideslp as the vertical tail" (p. 1).
Date: October 25, 1956
Creator: Buell, Donald A. & Tinling, Bruce E.
Partner: UNT Libraries Government Documents Department
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The Subsonic Lateral and Longitudinal Static Stability Characteristics Up to Large Angles of Sideslip for a Triangular-Wing Airplane Model Having a Ventral Fin

Description: "Wind-tunnel tests were conducted to determine the effects of a ventral fin on the static characteristics of a triangular-wing airplane model. Data were obtained for angles of sideslip up to 18 degrees at angles of attack 0, 6, 12, and 18 degrees at Mach numbers from 0.25 to 0.94. The results of the tests indicated that the ventral fin did not produce as much yawing moment per unit of exposed area at any angle of sideslip as the vertical tail" (p. 1).
Date: October 25, 1956
Creator: Buell, Donald A. & Tinling, Bruce E.
Partner: UNT Libraries Government Documents Department
open access

THE ELECTRICAL PROPERTIES OF URANIUM OXIDES

Description: No Description Available.
Date: September 25, 1956
Creator: Willardson, R.K.; Moody, J.W. & Goering, H.L.
Partner: UNT Libraries Government Documents Department
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The Electrical Properties of Uranium Oxides

Description: From introduction: "The work described here was part of an integrated investigation of the fundamental properties of uranium oxides done for the Mallinckrodt Chemical Works. Electrical measurements were employed to characterize the oxides produced by various processes from different starting materials. The basic objective of the program was to determine those factors which affect the sintering characteristics of uranium dioxide."
Date: September 25, 1956
Creator: Willardson, Robert K.; Moody, Jerry W. & Goering, Harvey L.
Partner: UNT Libraries Government Documents Department
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Ultrasonic Testing With Lamb Waves

Description: A method is described whereby many types of flaws lying close to the surface of a metal can be ultrasonically detected, regardless of the time duration of the interrogating pulses. Lamb waves are established in the metal between a flaw and the surface by an ultrasonic beam which impinges at the proper angle of incidence. A suitably positioned receiver transducer picks up the waves to reveal the flaw. In this method the usually troublesome surface echo is eliminated from the receiver by an acous… more
Date: September 25, 1956
Creator: Worlton, D. C.
Partner: UNT Libraries Government Documents Department
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Routine 107 basin inlet samples

Description: No Description Available.
Date: August 25, 1956
Creator: Reid, D. L.
Partner: UNT Libraries Government Documents Department
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Neutron Leakage Through Iron

Description: Neutron attenuation in the old pile shields is dependent more and more on the slowing down characteristics of the iron as the hydrogen is baked out of the masonite. For neutrons above 1 or 2 Mev, iron does a good job by inelastic scattering. However, below this energy attenuation can be done only by the gradual moderation by elastic scattering to thermal energies with subsequent capture in the iron. Since iron is heavy and thus a poor moderator, there is a good possibility that many neutrons of… more
Date: July 25, 1956
Creator: Wood, D. E.
Partner: UNT Libraries Government Documents Department
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Final Physics Report for the Engineering Test Reactor

Description: This report is a summary of the physics design work performed on the Engineering Test Reactor. The ETR presents computational difficulties not found in other reactors because of the large number of experimental holes in the core. The physics of the ETR depends strongly upon the contents of the in-core experimental facilities. In order to properly evaluate the reactor' taking into account the experiments in the core, multi-region, two-dimensional calculations are required. These calculation… more
Date: June 25, 1956
Creator: Wolfe, I. B.
Partner: UNT Libraries Government Documents Department
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Final Physics Report for the Engineering Test Reactor

Description: This volume continues with discussions of shielding provided for the heat exchanger building, concrete biological shield, top area and bottom area shielding, canal shielding, water shielding requirements during fuel element exchanges, and supplementary shielding requirements.
Date: June 25, 1956
Creator: Cegelski, W. & Machell, W.
Partner: UNT Libraries Government Documents Department
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Interaction of Enriched Uranium Assemblies

Description: Evaluation of the conditions under which the interaction effects of two or more sub-critical quantities of enriched uranium may be safely arranged.
Date: June 25, 1956
Creator: Henry, H. F.
Partner: UNT Libraries Government Documents Department
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Memorandum

Description: We have recently completed measurement of resonance escape probability in the BNL reactor and in several slightly-enriched uranium light water moderated lattices. In addition, WAPD has made available to us data from other slightly enriched uranium-water lattices, so that about 18 lattices in all have been done.
Date: June 25, 1956
Creator: Sher, R.
Partner: UNT Libraries Government Documents Department
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The Reactivity Value of Highly Burned Plutonium in Thermal Reactors

Description: It has been suggested by many workers in the power reactor field that a more efficient utilization of natural uranium may be obtained in thermal reactors if the Pu produced in a fuel cycle were used to enrich a subsequent cycle in which the irradiation-depleted-uranium would be reirradiated. The work described here was done for the purpose of evaluating the reactivity value of the Pu enrichment under the assumption that all plutonium produced is, after chemical separation, fabricated into separ… more
Date: June 25, 1956
Creator: Heineman, R. E. & Lefevre, H. W.
Partner: UNT Libraries Government Documents Department
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Analytic evaluation of effect of inlet-air temperature and combustion pressure on combustion performance of boron slurries and blends of pentaborane in octene-1 : Supplement I - Influence of new boric-oxide vapor-pressure data on calculated performanc

Description: "The theoretical performance of pentaborane has been recalculated using recent data on the vapor pressure of boric oxide. Previous calculations were based upon vapor-pressure data obtained some years ago by a method not as accurate as that employed in current investigations. The recalculated performance data for pentaborane differ appreciably from previously published data and are considered more accurate for evaluation of the relative potentialities of boron-containing fuels" (p. 1).
Date: May 25, 1956
Creator: Tower, Leonard K.
Partner: UNT Libraries Government Documents Department
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A Combined Distillation-Electrochemical Method for Recovery of Hydrofluoric Acid

Description: Electrodialysis in an ion-exchange membrane cell was shown to be technically feasible for the concentration of an azeotropic mixture of HF and water. A flowsheet is presented for recovery of anhydrous HF by distillation and electrodialysis of the azeotropic residue. In the electrodialysis step, 2.6 kwhr of energy per pound of anhydrous product was consumed, with electricity at 1¢ per kilowatt-hour, the total operating cost of the electrodialysis equipment alone, including amortization, would be… more
Date: May 25, 1956
Creator: Marinsky, J. A. & Giuffrida, A. J.
Partner: UNT Libraries Government Documents Department
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Effect of combustion-chamber pressure and nozzle expansion ratio on theoretical performance of several rocket propellant systems

Description: Theoretical calculations of specific impulse to determine the separate effects of increasing the combustion-chamber pressure and the nozzle expansion ratio on the performance of the propellants, hydrogen-fluorine, hydrogen-oxygen, ammonia-fluorine and AN-F-58 fuel - white fuming nitric acid (95 percent). The results indicate that an increase in specific impulse obtainable with an increase in combustion-chamber pressure is almost entirely caused by the increased expansion ratio through the nozzl… more
Date: May 25, 1956
Creator: Morrell, Virginia E.
Partner: UNT Libraries Government Documents Department
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Flow test: CG-482 ``DR type`` rear pigtail with B, D, DR and F pile fittings

Description: This letter transmits the data from the 189-D Hydraulics Laboratory flow test on three CG-482 rear pigtails. The tests were run with a standard B, D, Dr and F rear nozzle and rear Parker fitting over the range of flows and temperatures anticipated for early CG-558 operation. The data from the test are given. All three pigtails gave essentially identical results. For comparison the results of previous tests with present rear pigtails are also plotted.
Date: May 25, 1956
Creator: Bell, K. J.
Partner: UNT Libraries Government Documents Department
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