Technical Report Archive & Image Library (TRAIL) - 120 Matching Results

Search Results

Results: 1 - 24 next
open access

The aerodynamic characteristics at transonic speeds of a model with a 45 degree sweptback wing, including the effect of leading edge slats and a low horizontal tail

Description: Report presenting an investigation in the 16-foot transonic tunnel to determine the effects of leading-edge slats on the aerodynamic and longitudinal stability characteristics of a model of a swept-wing fighter-type airplane. Two different spanwise extents of leading-edge slats were tested, from 35 to 95 percent semispan and from 46 to 95 percent semispan. Results regarding the lift characteristics, drag characteristics and lift-drag ratios, stability characteristics, and flow-study pictures ar… more
Date: April 5, 1954
Creator: Runckel, Jack F. & Schmeer, James W.
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic characteristics of a cruciform-wing missile with canard control surfaces and of some very small span wing-body missiles at a Mach number of 1.41

Description: Report presenting an investigation to determine the aerodynamic characteristics of a cruciform 70 degree delta-wing missile configuration with 70 degree delta canard control surfaces at M = 1.41 in the 4- by 4-foot supersonic pressure tunnel. Modifications to the configuration included variation of the body length and canard area and the substitution of a series of very small span wings for the cruciform delta wings and canard controls.
Date: April 12, 1954
Creator: Spearman, M. Leroy & Robinson, Ross B.
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic characteristics of two flat-bottomed bodies at Mach number of 3.12

Description: From Introduction: "This report presents the results of an investigation in the NACA Lewis 1- by 1-foot supersonic wind tunnel of two flat-bottomed bodies to determine their aerodynamic characteristics at a Mach number of 3.12."
Date: April 2, 1954
Creator: Jack, John R. & Moskowitz, Barry
Partner: UNT Libraries Government Documents Department
open access

Aerosol Collection by Wetted Fiberglass Media

Description: A wet collection system for aerosols has been developed using fibrous media. Tests show the performance to be in accord with recently developed theory of collection by fibrous media. The effects of varying aerosol particle size, particle density, and gas velocity have indicated that inertial impaction is the primary collection mechanism. Three-year operating experience on several full scale plant installations shows reliable performance.
Date: April 28, 1954
Creator: Leary, Joseph A.; Clark, Robert A.; Hammond, R. Philip & Leopold, Charles S.
Partner: UNT Libraries Government Documents Department
open access

An Analysis of Pressure Studies and Experimental and Theoretical Downwash and Sidewash Behind Five Pointed-Tip Wings at Supersonic Speeds

Description: The following report covers an investigation that was done to supplement available experimental data on flow fields behind wings of an aircraft at supersonic speeds, as well as to furnish more quantitative information on the choice of the theoretical method for a given configuration and the accuracy to be expected when using such a method.
Date: April 21, 1954
Creator: Boatright, William B.
Partner: UNT Libraries Government Documents Department
open access

Analysis of the turbojet for propulsion of supersonic bombers

Description: From Introduction: "The investigation is discussed in the present report is an analysis of the turbojet engine as the power plant for bombers capable of supersonic flight speeds. A similar analysis, in which the turbojet engine is considered for the propulsion of supersonic fighter aircraft, is presented in reference 1. Two plans are considered in this report."
Date: April 5, 1954
Creator: Krebs, Richard P. & Wilcox, E. Clinton
Partner: UNT Libraries Government Documents Department
open access

Application of Radial-Equilibrium Condition to Axial-Flow Turbomachine Design Including Consideration of Change of Entropy With Radius Downstream of Blade Row

Description: Report presenting an investigation of the validity of application of the simplified-radial-equilibrium equation to axial-flow turbomachines. Two different types of equations were used. Results regarding the interpretation of the data, single stages, middle and end stages of the multistage compressor, application of the radial-equilibrium equation, and the solution for the velocity distributions are provided.
Date: April 14, 1954
Creator: Hatch, James E.; Giamati, Charles C. & Jackson, Robert J.
Partner: UNT Libraries Government Documents Department
open access

Blow-out velocities of various petroleum, slurry, and hydride fuels in a 1 7/8-inch diameter combustor

Description: Report presenting testing using a 1 7/8-inch inside-diameter combustor that can measure and compare the blow-out velocities of single-component fuels, slurries, and fuel mixtures with a wide range of reactivity and physical properties. The blow-out velocities of isooctane, n-heptane, isopentane, allyl chloride, and propylene oxide varied int he same way as flame speeds of the fuels. Results regarding the effects of different additives are also provided.
Date: April 19, 1954
Creator: Cook, Preston N., Jr.; Lord, Albert M. & Kaye, Samuel
Partner: UNT Libraries Government Documents Department
open access

A calculation study of wing-aileron flutter in two degrees of freedom for two-dimensional supersonic flow

Description: Report presenting the results of some sample calculations for the bending-aileron and torsion-aileron flutter of an idealized wing-aileron system for several values of Mach number in supersonic flow and some subsonic Mach numbers. The results are preliminary but may provide some knowledge of the influence of variations in certain parameters and to indicate some of the differences in the trends at high and low speeds.
Date: April 1954
Creator: Woolston, Donald S. & Huckel, Vera
Partner: UNT Libraries Government Documents Department
open access

Coefficient of friction and damage to contact area during the early stages of fretting 2: steel, iron, iron oxide, and glass combinations

Description: Report presenting experiments to study the start of fretting and cause of damage during the early stages of fretting of steel-steel combinations at a frequency 5 cycles per minute, an amplitude of 0.006 inch, a load of 150 grams, in air with relative humidity of less than 10 percent. Pure iron, glass, and iron oxide powder compacts were used in supplementary experiments.
Date: April 1954
Creator: Bailey, John M. & Godfrey, Douglas
Partner: UNT Libraries Government Documents Department
open access

Combined Natural- and Forced-Convection Laminar Flow and Heat Transfer of Fluids With and Without Heat Sources in Channels With Linearly Varying Wall Temperatures

Description: Note presenting an analysis of the flow of fluids with and without heat sources and subject to body forces between two plane parallel surfaces which are oriented in the direction of the generating body force under the condition that the temperature vary linearly along these surfaces. Results regarding the velocity and temperature distributions, heat transfer, and fluid flow are provided.
Date: April 1954
Creator: Ostrach, Simon
Partner: UNT Libraries Government Documents Department
open access

Comparison between theory and experiment for interference pressure field between wing and body at supersonic speeds

Description: Report presenting pressure-distribution data for a wing-body combination at several Mach and Reynolds numbers to investigate the effects of wing-body interference. The model was a single-wedge, rectangular wing mounted on a cylindrical body with an ogival nose. Results regarding the general physical principles, effects of angle of attack, effect of wing-incidence angle, effect of Reynolds number, and comparison with theory from other sources are provided.
Date: April 1954
Creator: Pitts, William C.; Nielsen, Jack N. & Gionfriddo, Maurice P.
Partner: UNT Libraries Government Documents Department
open access

Comparison of experimental with calculated results for the lifting effectiveness of a flexible 45 degree sweptback wing of aspect ratio 6.0 at Mach numbers from 0.8 to 1.3

Description: Report presenting tests conducted on models with 45 degree sweptback wings with varying degrees of flexibility to determine the effective lift-curve slopes in order to evaluate the usefulness of a general method for predicting effective lift ratio by a comparison of predicted values with test results.
Date: April 15, 1954
Creator: Walters, Richard E.
Partner: UNT Libraries Government Documents Department
open access

Corrosion Effects of Lowering the pH in TBP Waste Storage Tanks

Description: Large savings in waste storage space may be realized by lowering the pH at which TBP waste is stored. Additional savings in neutralizing chemicals and operating time would also increase the monetary gain from such a process change. However, before such a change could be made, the corrosive effect of TBP waste at a lower pH on the mild steel waste storage tanks had to be determined.
Date: April 6, 1954
Creator: Groves, N. D.
Partner: UNT Libraries Government Documents Department
open access

Decontamination of buildings used for processing alpha emitters

Description: A report regarding many uranium production plants constructed during the existing emergencies and pressures of World War II that were not intended to be permanent instillations. These plants either contractor or government owned, with buildings on the most part belonging to the contactor and a major portion of the processing equipment belonging to the government, became outmoded with the development
Date: April 29, 1954
Creator: Klevin, Paul B.; Harris, W. B. & Blatz, Hanson I.
Partner: UNT Libraries Government Documents Department
open access

Dynamic Stability and Control Characteristics of a Ducted-Fan Model in Hovering Flight

Description: Report presenting the results of an experimental investigation of the dynamic stability and control of a simple ducted-fan model in hovering flight in order to provide basic information on the stability and control of jet vertically rising airplanes in hovering flight. The investigation primarily consisted of flight tests with the model hovering at altitude and near the ground.
Date: April 22, 1954
Creator: Kirby, Robert H.
Partner: UNT Libraries Government Documents Department
open access

The Effect of a Change in Body Shape on the Loading of a 45 Degree Sweptback Wing-Body Combination at Transonic Speeds

Description: Memorandum presenting an investigation made in the 8-foot transonic tunnel of the pressure distribution on a wing-body combination with a 45 degree sweptback wing with aspect ratio 4, taper ratio 0.6, and NACA 65A006 airfoil sections parallel to the plane of symmetry. The chordwise pressure distributions, which were determined at various spanwise stations, indicate that the flow about the two configurations is the same. Results regarding basic pressure measurements and loading and aerodynamic c… more
Date: April 2, 1954
Creator: Loving, Donald L.
Partner: UNT Libraries Government Documents Department
open access

Effect of ignitor design and ignitor spark-gap environment on ignition in a turbojet combustor

Description: Report presenting an investigation to determine the effect of ignitor design and ignitor spark-gap environment on the ignition-energy requirements of a single tubular turbojet engine combustor. Data were obtained for a range of altitude inlet-air pressures, two-air flow rates, a range of combustor-inlet air and fuel temperatures, and two fuels. The effects on ignition energy requirements of shielding the ignitor spark gap, fuel heating elements and auxiliary fuel fields, and gap width and ignit… more
Date: April 1954
Creator: Foster, Hampton H. & Straight, David M.
Partner: UNT Libraries Government Documents Department
open access

Effect of Jet-Nozzle-Expansion Ratio on Drag of Parabolic Afterbodies

Description: The interaction of the flow from one convergent and two convergent-divergent nozzles on parabolic afterbodies was studied at free-stream Mach numbers of 2.0, 1.6, and 0.6 over a range of jet pressure ratio. The influence of the jet on boattail and base drag was very pronounced. Study of the total external afterbody drag values at supersonic speeds indicated that, over most of the high-pressure-ratio range, increasing the nozzle design expansion ratio increased the drag even though the boattail … more
Date: April 19, 1954
Creator: Englert, Gerald W.; Vargo, Donald J. & Cubbison, Robert W.
Partner: UNT Libraries Government Documents Department
open access

The Effect of Magnesium Particles of Various Equivalent Diameters on Some Physical Properties of Petrolatum-Stabilized Magnesium-Hydrocarbon Slurries

Description: Memorandum presenting the effect of magnesium particles of various equivalent diameters on the apparent viscosity, sedimentation ratio, and redispresibility of petroleum-stabilized magnesium-JP-4 slurries. Powders of the following equivalent diameters were investigated: 2.8, 3.8, 7.2, 9.3, 12.0, and 14.8 microns. An analysis of the experimental error and reproducibility of values of apparent viscosity, sedimentation ratio, and redispersibility of the slurries was also made.
Date: April 8, 1954
Creator: Lamberti, Joseph M.
Partner: UNT Libraries Government Documents Department
open access

Effect of Nozzle Secondary Flows on Turbine Performance as Indicated by Exit Surveys of a Rotor

Description: Report presenting detailed circumferential and radial surveys of total pressure and total temperature made downstream of the turbine rotor of a high-speed, high-specific-mass-flow turbine at design operating conditions. The purpose of this testing was to determine the sources and magnitudes of losses in turbines. Results regarding total pressure ratio, total-temperature-drop ratio, contours of efficiency, and location of the losses are provided.
Date: April 5, 1954
Creator: Whitney, Warren J.; Buckner, Howard A., Jr. & Monroe, Daniel E.
Partner: UNT Libraries Government Documents Department
open access

Effect of Reactor Irradiation on the Thermal Conductivity of Uranium Impregnated Graphite at Elevated Temperatures

Description: "An experiment to determine the effect of reactor irradiation on the thermal conductivity of uranium-impregnated graphite at elevated temperatures as described. The results show a decrease in the thermal conductivity saturating at [approximately] 60 percent at a temperature of 700 degrees C; at [approximately] 50 percent at a temperature of 1000 degrees C; and at [approximately] 25 percent at a temperature of 1300 degrees C. It was found that after irradiation at a given temperature, exposure… more
Date: April 29, 1954
Creator: Durand, Richard E.; Klein, David J. & Nykiel, Harry H.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen