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Application of a channel design method to high-solidity cascades and tests of an impulse cascade with 90 degrees of turning

Description: From introduction: "A technique for application of the channel design methods of reference 11 to the design of high-solidity cascades with prescribed velocity distributions as a function of arc length along the blade-element profiles is presented herein."
Date: November 30, 1951
Creator: Stanitz, John D. & Sheldrake, Leonard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Solution of the Direct and Inverse Potential Problems for Arbitrary Cascades of Airfoils

Description: Methods are given of determining the potential flow plast an arbitrary cascade of airfoils and the inverse problem of determining an airfoil having a prescribed velocity distribution in cascade. Results indicated that Cartesian mapping function method may be satisfactorily extended to include cascades. Numerical calculation for computing cascades by Cartesian mapping function method is considerably greater than for single airfoils but much less than hitherto required for cascades.
Date: December 1944
Creator: Mutterperl, William
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of effective momentum thickness in describing turbine rotor-blade losses

Description: Report presenting a discussion of the use of an effective rotor-blade momentum thickness in describing rotor-blade loss characteristics. A derivation of the necessary equations is presented for obtaining momentum thickness for given overall turbine performance, stator performance, and rotor geometric quantities.
Date: May 14, 1956
Creator: Stewart, Warner L.; Whitney, Warren J. & Miser, James W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy flow in a hadronic cascade: Application to hadroncalorimetry

Description: The hadronic cascade description developed in an earlierpaper is extended to the response of an idealized fine-sampling hadroncalorimeter. Calorimeter response is largely determined by the transferof energy E_e from the hadronic to the electromagnetic sector via \pi0production. Fluctuations in this quantity produce the "constant term" inhadron calorimeter resolution. The increase of its fractional mean, f_\rmem^0= \vevE_e/E, with increasing incident energy E causes the energydependence of the \… more
Date: May 17, 2006
Creator: Groom, Donald E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Geology and Mineral Resources of the Northern Part of the North Cascades National Park, Washington

Description: Introduction: This report was started as part of a study of the North Cascade Primitive Area, an area of about 830,000 acres, which adjoined the Canadian border on the north and which extended from Mount Shuksan on the west to Rock Mountain on the east. In the fall of 1968, Public Law 90-544, 90th Cong., reclassified the North Cascade Primitive Area and certain other national forest lands and created the North Cascades National Park, the Ross Lake National Recreation Area, and the Pasayten Wild… more
Date: 1972
Creator: Staatz, Mortimer Hay; Tabor, Rowland W.; Weis, Paul L.; Robertson, Jacques F.; Van Noy, Ronald M. & Pattee, Eldon C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lift and Moment Equations for Oscillating Airfoils in an Infinite Unstaggered Cascade

Description: Aerodynamic coefficients similar to those of the isolated airfoil are obtained as functions of the cascade geometry and the phasing between successive blades; the phasings considered are zero, 90 degrees, and 180 degrees. These aerodynamic coefficients are plotted for the special case when all the airfoils are vibrating in bending in phase (360 degree phasing). It is shown that the effect of cascading for this case is to reduce greatly the aerodynamic damping.
Date: October 1954
Creator: Mendelson, Alexander & Carroll, Robert W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stall Propagation in a Cascade of Airfoils

Description: Note presenting an experimental investigation of stall propagation in a stationary circular cascade in which high-speed schileren and interferometer photography is used is described. Results regarding a circular cascade were provided, which indicated that the number of cells increased as the flow through the rotor was throttled.
Date: June 1958
Creator: Kriebel, Anthony R.; Seidel, Barry S. & Schwind, Richard G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental investigation of blade flutter in an annular cascade

Description: Report presenting an investigation of the stall operation of an annular cascade under varied conditions of geometry and air flow. Controlled variables included angle of attack, blade chord and spacing, number of blades in the cascade, and air velocity. Results regarding stalling flutter, vibratory stress, aerodynamic damping characteristics, nature of vibrations, and presence of rotating stall are provided.
Date: November 1955
Creator: Rowe, J. R. & Mendelson, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design and performance of an experimental axial-discharge mixed-flow compressor 3: over-all performance of impeller and supersonic-diffuser combination

Description: Report presenting an investigation of an axial-discharge impeller in combination with a 16-vaned supersonic diffuser cascade over a range of flow conditions at equivalent tip speeds varying from 800 to 1600 feet per second. Results regarding the overall performance of the combination, starting of diffuser cascade, use of flow bleedoff to aid starting, radial distribution of flow angle, flow characteristics within diffuser, and efficiency of diffuser cascade are provided.
Date: April 30, 1951
Creator: Wilcox, Ward W. & Robbins, William H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A visualization study of secondary flows in cascades

Description: Flow-visualization techniques are employed to ascertain the streamline patterns of the nonpotential secondary flows in the boundary layers of cascades, and thereby to provide a basis for more extended analyses in turbomachines. The three-dimensional deflection of the end-wall boundary layer results in the formation of a vortex within each cascade passage. The size and tightness of the vortex generated depend upon the main-flow turning in the cascade passage. Once formed, a vortex resists turnin… more
Date: 1954
Creator: Herzig, Howard Z.; Hansen, Arthur G. & Costello, George R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Conformal Transformation of an Airfoil Into a Straight Line and Its Application to the Inverse Problem of Airfoil Theory

Description: "A method of conformal transformation is developed that maps an airfoil into a straight line, the line being chosen as the extended chord line of the airfoil. The mapping is accomplished by operating directly with the airfoil ordinates. The absence of any preliminary transformation is found to shorten the work substantially over that of previous methods. Use is made of the superposition of solutions to obtain a rigorous counterpart of the approximate methods of thin-airfoils theory" (p. 1).
Date: December 1944
Creator: Mutterperl, William
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Participant Intimacy - a Cluster Analysis of the Intranuclear Cascade

Description: The intranuclear cascade for relativistic nuclear collisions is analyzed in terms of 'clusters' consisting of groups of nucleons which are dynamically linked to each other by violent interactions. The formation cross sections for the different cluster types as well as their intrinsic dynamics are studied and compared with the predictions of the linear cascade model ('rows-on-rows').
Date: August 1, 1980
Creator: Cugnon, J.; Knoll, J. & Randrup, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A preliminary experimental investigation of a submerged cascade inlet

Description: Report presenting an experimental investigation of a submerged air inlet incorporating a cascade of airfoils for turning and diffusing the entering air. Variables associated with submerged air inlets and airfoil-cascade designs were considered, including changes to the ramp plan form and angle for the submerged inlet and the cascade-axis inclination, cascade-blade angle, solidity, and inclination of the center line of the duct for the cascade.
Date: March 25, 1949
Creator: Christiani, R. Duane & Randall, Lauros M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Secondary Flows in Annular Cascades and Effects on Flow in Inlet Guide Vanes

Description: Qualitative discussion is presented of the general nature of secondary flows in stationary annular cascades with thin wall boundary layers and radial design variation of circulation. Deviations from ideal mean outlet flows (based on blade-element performance) exist in potential-flow region of vanes because of conditions imposed by end-wall boundaries, displacement of wall boundary layers toward blade suction surfaces, and irrotationality requirement. As a consequence of existence of nonuniform … more
Date: August 24, 1951
Creator: Lieblein, Seymour & Ackley, Richard H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Simplistic View of Hadron Calorimetry

Description: All too often we rely on Monte Carlo simulations withoutworrying too much about basic physics. It is possible to start with avery simple calorimeter (a big cylinder) and learn the functional form ofpi e by aninduction argument. Monte Carlo simulations provide sanitychecks and constants. A power-law functional form describes test beamresults surprisingly well. The prediction that calorimeters responddifferently to protons and pions of the same energy was unexpected. Theeffect was later demonstra… more
Date: November 16, 2006
Creator: Groom, Donald E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Stall Propagation in Axial-Flow Compressors

Description: Note presenting a theory of stall propagation in a cascade of airfoils of high solidity, which includes the effects of finite blade chord and of the boundary-layer response to changes in angle of attack. For a stationary circular cascade and a single-stage axial-flow compressor, the theory predicts propagation velocities within 25 percent over a wide range of wave lengths.
Date: June 1956
Creator: Stenning, Alan H.; Kriebel, Anthony R. & Montgomery, Stephen R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Optimum Flow Distribution for Multicomponent Isotope Separation in a Single Cascade

Description: The separation of isotopic mixtures containing three components in a gaseous diffusion cascade operating over an infinite reservoir is discussed. The flow distribution yielding the smallest total flow per unit product was found and compared with the flow distributions in some other theoretical cascades. Curves are presented to show the number of stages required, the total flow and the concentration gradients for both light and middle isotope separation. (auth)
Date: January 17, 1962
Creator: Murphy, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nucleon-Meson Cascade Calculations: Transverse Shielding for a 45-Gev Electron Accelerator (Part III)

Description: In two previous reports nucleon-meson cascade calculations were carried out for several cases of interest in the design of the transverse shield for the proposed 45-Bev linear electron accelerator at Stanford University. Results are now given for two additional cases. (auth)
Date: March 28, 1963
Creator: Alsmiller, R. G., Jr.; Alsmiller, F. S. & Murphy, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Watermill facing the sun]

Description: Photograph of a watermill facing the sun in front of a clear sky. It is either sunrise or sunset at the time of capture as there are many long shadows in the image. The watermill sits on a hill, with the water below it. The water wheel is sitting in shadow down to the right, and a small cascade down to the left.
Date: [1939..1989]
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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First measurement of the degree of fragmentation of the decay out cascade from the superdeformed yrast band in {sup 192}Hg

Description: The decay spectrum of the yrast superdeformed band in {sup 192}Hg comprises a quasicontinuum with discrete lines ranging from 1 to 3.2 MeV. The intensity fluctuations of this quasicontinuum give information on the degree of fragmentation of the decay cascades and on the effect of pairing correlations on the level density {rho}(U) in the normal deformed well (0 < U < U{sub SD}).
Date: December 1, 1996
Creator: Lopez-Martens, A.; Hannachi, F. & Schueck, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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