UNT Libraries Government Documents Department - 28 Matching Results

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An analysis of the forces and pressure distribution on a wing with the leading edge swept back 37.25 degrees

Description: Report presenting testing of a semispan model of a wing with the leading edge swept back 37.25 degrees, an aspect ratio of 6.04, and a taper ratio of 0.5 in order to ascertain the compressibility effects on the forces, moments, and surface pressures. Lift, drag, and pitching-moment data along with chordwise distribution of static pressure at five spanwise stations are presented for a range of Mach numbers and a constant Reynolds number. Results regarding force and moment characteristics, critic… more
Date: March 30, 1950
Creator: Edwards, George G. & Boltz, Frederick W.
Item Type: Refine your search to only Report
open access

Calculated Lift Distributions of a Consolidated Vultee B-36 and Two Boeing B-47 Airplanes Coupled at the Wing Tips

Description: Report presenting the calculated lift distributions and associated aerodynamic parameters for a Consolidated Vultee B-36 and two Boeing B-47 airplanes coupled at the wing tips for different angles of attack and deflections of the ailerons. Results regarding lifts, moments, and induced drags and the use of the data for calculating aerodynamic forces and equilibrium conditions are provided.
Date: November 30, 1950
Creator: Diederich, Franklin W. & Zlotnick, Martin
Item Type: Refine your search to only Report
open access

A Design Study of Leading-Edge Inlets for Unswept Wings

Description: Note presenting a practical method, employing a lofting technique, for determining the profile coordinates of an air inlet for the leading edge of an airfoil from formulas which are dependent only on the airfoil coordinates and on the height of the opening. It was found that the base-profile concept of thin-airfoil theory could be applied to a ducted airfoil with satisfactory results. Results regarding design inlets, modified inlets, and end-closure shape are provided.
Date: June 30, 1950
Creator: Dannenberg, Robert E.
Item Type: Refine your search to only Report
open access

The Distribution of Trace Uranium (VI) in Nitric Acid--TTA--Organic Solvent Mixtures

Description: Three constants can be used to calculate the distribution coefficient of uranium (VI) with an accuracy of 15% in pentaether-nitric acid mixtures containing up to 1.42M total nitric acid and 0.6M TTA and in cyclohexanone-nitric acid mixtures containing up to 1.0M total nitric acid and 0.5M TTA.
Date: June 30, 1950
Creator: Heisig, D. L. & Crandall, Howard William, 1921-1990
Item Type: Refine your search to only Report
open access

Effects of leading-edge devices and trailing-edge flaps on longitudinal characteristics of two 47.7 degree sweptback wings of aspect ratios 5.1 and 6.0 at a Reynolds number of 6.0 x 10(exp 6)

Description: Report presenting an investigation in the 19-foot pressure tunnel to determine the effects of leading-edge stall-control devices and trailing-edge flaps on the longitudinal stability characteristics of a 47.7 degree sweptback wing that could have aspect ratios of 5.1 and 6.0 by using interchangeable wing tips. The effects of wing fences, roughness, and a fuselage were also determined. Results regarding the lift characteristics and lift-drag ratios are also provided.
Date: August 30, 1950
Creator: Salmi, Reino J.
Item Type: Refine your search to only Report
open access

Experimental Investigation of Air-Cooled Turbine Blades in Turbojet Engine: 1: Rotor Blades With 10 Tubes in Cooling-Air Passages

Description: Report presenting an investigation to experimentally determine the effectiveness of air cooling several turbine-blade configurations in a turbojet engine. The results obtained with the first configuration, which was a hollow blade shell with 10 tube inserts, are presented. A description of factors leading to the design are provided as well as the correlated cooled-blade temperatures, solid-blade temperatures, cooling-air-temperature increase through radial passages, and blade failure are provid… more
Date: July 30, 1950
Creator: Ellerbrock, Herman H., Jr. & Stepka, Francis S.
Item Type: Refine your search to only Report
open access

Extension of Alpha- and Beta-Decay Systematics of ProtactiniumIsotopes

Description: As part of the program for obtaining data to extend the scope of the systematics of alpha-radioactivity and to obtain more data pertaining to the energy surface in the heavy region of elements, they have made some pertinent new measurements on protactinium isotopes. The heaviest isotope of protactinium hitherto reported is that of mass 234 and hence it would be of interest to know the beta-emission properties of heavier isotopes in order to tie them in with the known radioactive data in this ge… more
Date: January 30, 1950
Creator: Meinke, W. Wayne & Seaborg, Glenn T.
Item Type: Refine your search to only Report
open access

Heat-transfer and operating characteristics of aluminum forced-convection and stainless-steel natural-convection water-cooled single-stage turbines

Description: Report presenting testing of two water-cooled turbines, one of aluminum alloy using forced-convection cooling and one of stainless steel using natural-convection cooling, to obtain heat-transfer and general operating data like blade temperatures, coolant-flow rates, and coolant pumping losses. Results regarding outside and inside heat-transfer results, coolant pumping power, general operating results, and practical considerations for both are provided.
Date: June 30, 1950
Creator: Freche, John C. & Diaguila, A. J.
Item Type: Refine your search to only Report
open access

THE ISOTRON

Description: Most methods of separating isotopes depend on the use of a large magnetic field. The isotron is an electromagnetic device for separating isotopes, but it effects the separation by the use of radiofrequency voltages instead of magnetic fields. It has the advantage that plane sources of large area can be used instead of the slit sources to which most magnetic methods are limited. Before entering into any discussion of the details, a simplified description of the principles of the method is given.
Date: July 30, 1950
Creator: Wilson, R.R.
Item Type: Refine your search to only Report
open access

Longitudinal characteristics of two 47.7 degree sweptback wings with aspect ratios of 5.1 and 6.0 at Reynolds numbers up to 10 x 10(exp 6)

Description: Report presenting an investigation of the longitudinal aerodynamic characteristics of a 47.7 degree sweptback wing in the 19-foot pressure tunnel in order to provide large-scale data on relatively high-aspect-ratio sweptback wings. Results regarding pitching-moment characteristics, lift characteristics, lift-drag ratio, and effect of roughness are provided.
Date: March 30, 1950
Creator: Salmi, Reino J. & Carros, Robert J.
Item Type: Refine your search to only Report
open access

An NACA transonic test section with tapered slots tested at Mach numbers to 1.26

Description: Report presenting testing of an NACA octagonal transonic slotted test section has been modified to include slots with point origins located at the tunnel aerodynamic minimum and which diverged linearly over a length of 1.5 jet diameters. Pressure distributions along the axis and one wall of the slotted configuration are presented and indicate the attainment of a test region with satisfactory uniform Mach number distributions.
Date: March 30, 1950
Creator: Ward, Vernon G.; Whitcomb, Charles F. & Pearson, Merwin D.
Item Type: Refine your search to only Report
open access

A preliminary flight investigation of the effects of vortex generators on separation due to shock

Description: Investigation of an airplane in flight to determine the effectiveness of vortex generators in preventing separation due to compressibility shock at full-scale Reynolds numbers. All of the arrangements of vortex generators tested delayed separation to higher Mach numbers or lift coefficients. More experimentation will be needed to determine the optimum arrangement of vortex generators.
Date: November 30, 1950
Creator: Lina, Lindsay J. & Reed, Wilmer H., III
Item Type: Refine your search to only Report
open access

The Preparation and Some Properties of a Uranium Hexafluoride-Sodium Fluoride Complex

Description: Report discussing "preparation of some stable complexes of uranium hexafluoride with sodium, potassium, and thallium fluorides...Such compounds, reported as stable in air and of low vapor pressure, offered promise as convenient sources of unoxygenated hexa-valent uranium without the difficulties associated with the use of uranium hexafluoride itself."
Date: November 30, 1950
Creator: Horton, Charles A.; Harris, Warren W.; Barr, John T. & Posey, J. C.
Item Type: Refine your search to only Report
open access

Pressure-Rise and Leakage-Loss Characteristics of a Rotating Cowling

Description: Report discussing an experimental and analytical investigation in order to study the pressure-rise and leakage-loss characteristics of rotating cowlings. A comparison of the theoretical and experimental results indicated that pressure-rise characteristics can be predicted if internal-flow losses and internal-flow angle at the cowling-vane trailing edge are known.
Date: August 30, 1950
Creator: Runckel, Jack F. & Hieser, Gerald
Item Type: Refine your search to only Report
open access

Progress Report on Refining of MgX and Other Uranium-Bearing Materials

Description: From abstract: "Results of tests investigating the effects of feed and scrub acidities on the extraction of uranium and contaminants from process slurries by tributyl phosphate-Gulfspray Naphtha in a Scheibel continuous extractor are described. Studies on the fractional precipitation of MgX from a dilute sulfuric acid system throw considerable light on the probable constitution of MgX. Further data on the effect of acidity on the extraction of molybdenum and vanadium into ethyl ether are presen… more
Date: November 30, 1950
Creator: Ewing, R. A.; Belcher, R. L.; Kiehl, S. J., Jr. & Bearse, A. E.
Item Type: Refine your search to only Report
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