General Electric

About: General Electric is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Turbine & Rotor (electric). The organization has 76365 authors who have published 110557 publications receiving 1885108 citations. The organization is also known as: General Electric Company & GE.

Air blast fuel atomizer

Abstract: An air blast fuel atomizer for establishing a highly atomized fuel dispersion at the confluence of two counter-rotating air swirls, wherein a uniform concentration of fuel is disposed on a circumferential shroud and directed to the atomization forces at the lip of the shroud.

Magnetic resonance devices suitable for both tracking and imaging

Abstract: A novel RF coil attached to an invasive device, such as a catheter, is used to detect magnetic resonance (MR) signals for monitoring the position of the device within a subject and for the acquisition of high-resolution magnetic resonance images of the tissue surrounding the device. The novel coil is sensitive to a small volume of MR active tissue during tracking procedures, but is sensitive to a larger volume during imaging procedures. During tracking, the MR signals are detected in the presence of magnetic field gradients and thus have frequencies which are substantially proportional to the location of the coil along the direction of the applied gradient. Signals are detected responsive to applied magnetic gradients to determine the position of the coil in several dimensions. The position of the novel coil, and hence the device, as determined by the tracking system is superimposed upon independently acquired medical diagnostic images. Magnetic Resonance images of the tissue surrounding the novel coil can be obtained by detecting the MR response signals from the novel coil using gradient-recalled, spin-echo or other MR imaging sequences.

Track Registration in Various Solid-State Nuclear Track Detectors

Abstract: In a number of materials energetic, heavy nuclear particles leave trails of radiation-damaged material which can be selectively attacked by chemical reagents to produce tracks visible in the optical microscope. The track-registration characteristics of three such materials---muscovite mica, Lexan polycarbonate, and cellulose nitrate---were investigated using fission fragments and various heavy ions from argon down to helium, each over a wide range of energies. Curves of energy-loss rate $\frac{\mathrm{dE}}{\mathrm{dx}}$ versus particle energy were calculated for each solid, and the experimental results were displayed on the $\frac{\mathrm{dE}}{\mathrm{dx}}$ curves. It was found that for each detector there is a fairly narrow range of $\frac{\mathrm{dE}}{\mathrm{dx}}$ values over which the track-registration efficiency varies from unity to zero. This rapid drop in efficiency with $\frac{\mathrm{dE}}{\mathrm{dx}}$ makes it reasonable to define a critical energy-loss rate ${(\frac{\mathrm{dE}}{\mathrm{dx}})}_{\mathrm{crit}}$ for each detector, which appears to be independent of energy and atomic number. Crude estimates of particle masses can be made using several detectors with different ${(\frac{\mathrm{dE}}{\mathrm{dx}})}_{\mathrm{crit}}$. For example, for particles with energies less than \ensuremath{\sim}3 MeV/amu, the mass must exceed 3, 12, and 28 amu if tracks register in cellulose nitrate, Lexan polycarbonate, and muscovite, respectively. For particles such as fission fragments, with initial $\frac{\mathrm{dE}}{\mathrm{dx}}\ensuremath{\gg}{(\frac{\mathrm{dE}}{\mathrm{dx}})}_{\mathrm{crit}}$, the track lengths are a fair approximation of the particle ranges. Particles incident at a very small angle to a detector surface are registered in mica but not in plastics or glasses. Solid-state track detectors presently offer unique advantages when heavy particles must be studied in the presence of a high background flux of light particles.

Methods and apparatus for rotor blade ice detection

Abstract: A method for detecting ice on a wind turbine having a rotor and one or more rotor blades each having blade roots includes monitoring meteorological conditions relating to icing conditions and monitoring one or more physical characteristics of the wind turbine in operation that vary in accordance with at least one of the mass of the one or more rotor blades or a mass imbalance between the rotor blades. The method also includes using the one or more monitored physical characteristics to determine whether a blade mass anomaly exists, determining whether the monitored meteorological conditions are consistent with blade icing; and signaling an icing-related blade mass anomaly when a blade mass anomaly is determined to exist and the monitored meteorological conditions are determined to be consistent with icing.