79 research outputs found
Efficient radiation coupling to quantum-well radiation-sensing array via evanescent waves
Devices and techniques for using a prism to couple IR radiation to a quantum-well sensor with a polarization substantially perpendicular to the quantum-well layers
Wavelength division multiplexed optical solitons
A technique of setting powers and shape of beams to allow optical solitons to exist on WDM beams in fibers
Two-dimensional Cascade Investigation of the Maximum Exit Tangential Velocity Component and Other Flow Conditions at the Exit of Several Turbine Blade Designs at Supercritical Pressure Ratios
The nature of the flow at the exit of a row of turbine blades for the range of conditions represented by four different blade configurations was evaluated by the conservation-of-momentum principle using static-pressure surveys and by analysis of Schlieren photographs of the flow. It was found that for blades of the type investigated, the maximum exit tangential-velocity component is a function of the blade geometry only and can be accurately predicted by the method of characteristics. A maximum value of exit velocity coefficient is obtained at a pressure ratio immediately below that required for maximum blade loading followed by a sharp drop after maximum blade loading occurs
Turbine-rotor-blade Designs Based on One-dimensional-flow Theory I : Performance of Single-stage Turbine Having 40-percent Reaction
Experimental Investigation of Effect of High-aspect-ratio Rotor Blades on Performance of Conservatively Designed Turbine
A Two-dimensional Cascade Study of the Aerodynamic Characteristics of a Turbine-rotor Blade Suitable for Air Cooling
Experimental Investigation of a High Subsonic Mach Number Turbine Having High Rotor Blade Suction-surface Diffusion
Investigation of high subsonic turbine with high rotor blade suction-surface diffusio
Method and apparatus for low-loss signal transmission
The present invention relates to the field of radio-frequency (RF) waveguides. More specifically, the present invention pertains to a method and apparatus that provides ultra-low-loss RF waveguide structures targeted between approximately 300 GHz and approximately 30 THz. The RF waveguide includes a hollow core and a flexible honeycomb, periodic-bandgap structure surrounding the hollow core. The flexible honeycomb, periodic-bandgap structure is formed of a plurality of tubes formed of a dielectric material such as of low-loss quartz, polyethylene, or high-resistivity silicon. Using the RF waveguide, a user may attach a terahertz signal source to the waveguide and pass signals through the waveguide, while a terahertz signal receiver receives the signals
Study of Flow Conditions and Deflection Angle at Exit of Two-dimensional Cascade of Turbine Rotor Blades at Critical and Supercritical Pressure Ratios
Comparison of results of experimental and theoretical studies of blade-outlet boundary-layer characteristics of stator blade for a high subsonic Mach number turbine
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