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Investigation of Aerodynamic and Icing Characteristics of Water-Inertia-Separation Inlets for Turbojet Engines
"The results of an investigation of several internal water-inertia-separation inlets consisting of a main duct and an alternate duct designed to prevent automatically the entrance of large quantities of water into a turbojet engine in icing conditions are presented. Total-pressure losses and icing characteristics for a direct-ram inlet and the inertia-separation inlets are compared at similar aerodynamic and simulated icing conditions. Complete ice protection for inlet guide vanes could not be achieved with the inertia-separation inlets investigated" (p. 1).
Date:
July 26, 1950
Creator:
von Glahn, Uwe & Blatz, Robert E.
System:
The UNT Digital Library
Fabrication and Properties of Hot-Pressed Molybdenum Disilicide
Report presenting an investigation of hot-pressed molbdenum disilicide bodies produced by industrial processes at a temperature of 2950 degrees and a pressure of 3000 pounds per square inch. Results regarding the short-time tensile strength, stress-rupture data, compression strength, air-corrosion resistance, hardness, coefficient of linear thermal expansion, thermal conductivity, and density are provided.
Date:
May 26, 1950
Creator:
Long, Roger A.
System:
The UNT Digital Library
Numerical solution of equations for one-dimensional gas flow in rotating coolant passages
Report presenting a theoretical analysis of the air flow through the blade coolant passages in an air-cooled turbine rotor. The simultaneous effects of area change, compressibility, wall friction, heat transfer, and rotation were included.
Date:
June 26, 1950
Creator:
Brown, W. Byron & Rossbach, Richard J.
System:
The UNT Digital Library
Supplementary analysis of the dynamic lateral stability characteristics of the Bell X-2 airplane as affected by variations in mass and aerodynamic parameters
Report presenting the application of an estimation of the derivative of yawing moment due to rolling to the dynamic lateral stability characteristics of the Bell X-2. Results regarding the airplane with flaps and gear retracted and airplane with flaps and gear lowered are provided.
Date:
June 26, 1950
Creator:
Michael, William H., Jr. & Queijo, M. J.
System:
The UNT Digital Library
The effects of compressibility on the pressures on a body of revolution and on the aerodynamic characteristics of a wing-nacelle combination consisting of the body of revolution mounted on a swept-back wing
Memorandum presenting an investigation of the effects of compressibility on the forces, pitching moments, and surface pressures on a wing-nacelle combination. The leading edge of the wing was swept back 37.25 degrees and the nacelle was a body of revolution with a fineness ratio of 6.5. The effects of compressibility on the surface pressures and on the drag of a body of revolution similar to the nacelle were also determined.
Date:
July 26, 1950
Creator:
Boltz, Frederick W. & Beam, Benjamin H.
System:
The UNT Digital Library
Wing-dropping characteristics of some straight and swept wings at transonic speeds as determined with rocket-powered models
Report presenting data gathered on a lateral-trim change or wing dropping that involves a rapid change of lateral trim with Mach number, which has occurred on several rocket-powered models used in roll investigations at transonic speeds. The data in this report demonstrates that straight wings with airfoil sections 9 percent thick or greater are susceptible to wing dropping between Mach numbers of 0.9 and 1.0. Results for straight, sweptback, and delta wings are provided.
Date:
May 26, 1950
Creator:
Stone, David G.
System:
The UNT Digital Library
Flight Measurements With the Douglas D-558-II (BuAero No. 37974) Research Airplane: Measurements of Wing Loads at Mach Numbers Up to 0.87
Report presenting flight measurements of the aerodynamic wing normal force, bending moment, and pitching moment using strain gains on the D-558-II airplane at Mach numbers up to 0.87 and angles of attack up to 38 degrees. Results regarding Mach number effects and normal-force-coefficient effects are provided.
Date:
December 26, 1950
Creator:
Mayer, John P.; Valentine, George M. & Swanson, Beverly J.
System:
The UNT Digital Library
Investigation of a 42.7 Degree Sweptback Wing Model to Determine the Effects of Trailing-Edge Thickness on the Aileron Hinge-Moment and Flutter Characteristics at Transonic Speeds
Report presenting an investigation in the high-speed tunnel of a 42.7 degree sweptback wing model to determine the effects of aileron trailing-edge thickness on aileron hinge moments and one-degree-of-freedom aileron flutter. Results regarding the hinge-moment characteristics and free-floating characteristics are also provided.
Date:
December 26, 1950
Creator:
Thompson, Robert F.
System:
The UNT Digital Library
Flight Investigation of the Aileron Characteristics of the Douglas D-558-I Airplane (BuAero No. 37972) at Mach Numbers Between 0.6 and 0.89
"Abrupt, rudder-fixed aileron rolls have been made with the Douglas D-558-I airplane (BuAero No. 37972) at Mach numbers between 0.6 and 0.89. Rolls were made at aileron deflections between one-eighth and one-half the maximum available deflection. The results obtained indicate that the aileron effectiveness is independent of Mach number and deflection within the range investigated" (p. 1).
Date:
May 26, 1950
Creator:
Thompson, Jim Rogers; Roden, William S. & Eggleston, John M.
System:
The UNT Digital Library
Downwash in Vortex Region Behind Rectangular Half-Wing at Mach Number 1.91
Results of an experimental investigation to determine downwash and wake characteristics in region of trailing vortex system behind a rectangular half-wing at Mach number 1.91 are presented. The wing had a 5-percent thick symmetric diamond cross section beveled to a knife edge at the tip. At small angles of attack, downwash angles were in close agreement with predictions of linearized theory based on the assumption of an undistorted vortex sheet. At higher angles of attack, the flow was greatly influenced by the rolling up of the vortex sheet.
Date:
October 26, 1950
Creator:
Cummings, John L. & Haefeli, Rudolph C.
System:
The UNT Digital Library
Advanced Seminar in Reactor Physics
The following report provides equations that result from a seminar in reactor physics.
Date:
July 26, 1950
Creator:
Smith, Nicholas M.
System:
The UNT Digital Library
Tributyl Phosphate as an Alternate Solvent for Extraction of "25" from spent MTR Fuel Assemblies
Technical report showing how, on a laboratory scale, a one-cycle solvent extraction process using tributyl phosphate (TBP) can be used for the recovery and decontamination of uranium 235 from spent Materials Testing Reactor fuel assemblies.
Date:
September 26, 1950
Creator:
Runion, T. C.; Bamberg, I. L. & Fowler, V. L.
System:
The UNT Digital Library
Studies in Beta and Gamma Ray Spectroscopy
The study of artificial radioactive isotopes is at the present time one of the most important topics in nuclear research. It involves the establishment of a detailed term scheme for the disintegration in question. Not only are the energies of the components of the different beta and gamma radiations of interest, but also their intensities. These data give information concerning the probabilities of transitions between the different nuclear energy levels. From them it is possible to draw conclusions regarding the mechanism of the disintegration and to correlate the spina and parities of the levels.
Date:
January 26, 1950
Creator:
Hayward, Raymond Webster, Jr.
System:
The UNT Digital Library
Present Status of the Bevatron R. F. System
The general method of controlling the radio frequency for the full scale Bevatron will be the same as that used on the 1/4 scale machine. The details of course will be modified to meet the requirements of greater range, higher output voltage and closer tracking tolerances. In addition, there is the added complication introduced by the current ripple.
Date:
April 26, 1950
Creator:
Riedel, J.
System:
The UNT Digital Library
High Energy Excitation Functions in the Heavy Region
The electrostatically deflected beam of the 184-inch cyclotron has been used with the stacked foil and absorber technique to determine the excitation functions. The data are presented graphically and discussed individually for each of the reactions. The results are discussed in terms of compound nucleus formation, transparency effects, and other factors in order to arrive at a qualitative picture for the mechanism of high energy nuclear reactions with heavy nuclei.
Date:
September 26, 1950
Creator:
Meinke, W. W.; Wick, G. C. & Seaborg, G. T.
System:
The UNT Digital Library
Supersonic Flow Around Circular Cones at Angles of Attack
The properties of conical flow without axial symmetry are analyzed. The flow around cones of circular cross section at small angles of attack is determined by correctly considering the effect of the entropy gradients in the flow.
Date:
September 26, 1950
Creator:
Ferri, Antonio
System:
The UNT Digital Library
General method and thermodynamic tables for computation of equilibrium composition and temperature of chemical reactions
From Summary: "A rapidly convergent successive approximation process is described that simultaneously determines both composition and temperature resulting from a chemical reaction. This method is suitable for use with any set of reactants over the complete range of mixture ratios as long as the products of reaction are ideal gases. An approximate treatment of limited amounts of liquids and solids is also included. This method is particularly suited to problems having a large number of products of reaction and to problems that require determination of such properties as specific heat or velocity of sound of a dissociating mixture."
Date:
January 26, 1950
Creator:
Huff, Vearl N.; Gordon, Sanford & Morrell, Virginia E.
System:
The UNT Digital Library