Abstract:
An oil scavenge assembly for small gas turbine engine. The assembly includes a rolling element bearing, for supporting a rotating shaft, slip fit within a bearing liner. The bearing liner has a plurality of helical grooves along its surface. A plurality of circumferentially spaced scoops extend inward from the liner and direct the oil expelled from the bearing into the helical grooves.
Abstract:
A system and method for autonomically maintaining group referential integrity across a distributed directory. When a server receives an operation request from a client regarding an entry in the distributed directory, the server sends a request to the particular server containing the entry to be modified that instructs the server to modify the entry, but without performing a referential integrity check. The server then determines whether the request returned successfully. If so, the server sends a request to each server in the network to perform the requested operation on all group references for the entry, but without actually performing the requested operation on the entry itself. If all of these requests return successfully, the server notifies the requesting client that the requested operation has been performed.
Abstract:
The “fuel-air pressure ratio” combustion control system for maintaining a selected fuel-air ratio for a combustion apparatus supplied with air at a substantially constant volumetric rate is improved by means for adjusting the flow rate of fuel in relation to temperature fluctuations of the air. A temperature sensor positioned in the air stream before it mixes with the fuel is connected to a converter which transmits converted temperature signals from the sensor as adjustments of a remote control, secondary valve in the fuel line downstream of a primary valve regulating the flow of fuel. Fuel temperature fluctuations can also be converted into adjustments of the remote control, secondary valve.
Abstract:
A process and apparatus which can be packaged in a warhead for disseminat a finely divided high explosive by means of a burster charge into the atmosphere as an high explosive dust-air cloud bomb. By interposing a damping means between the explosive burster charge and the load of particulate high explosive, the explosion of the HE explosive inside the container by the burster charge is prevented.
Abstract:
A burner surface and creation method are provided. The burner surface includes a frame with a compact layer of unsintered metal and ceramic fibers that have been vacuum cast to a surface of the frame. The layer of unsintered metal and ceramic fibers is not greater than 0.5 inches, and is created without using substantial amounts of polymer pore forming or binding agents. The frame and compact layer additionally include a plurality of apertures that form holes through the burner surface plate. The burner surface plate may be formed by attaching a perforated screen to a fixture, inserting pins through apertures in the screen, introducing a suspension of metal and ceramic fibers into a space above the screen, vacuum casting the metal and ceramic fibers onto the screen to form a layer of metal and ceramic fibers, removing the plurality of pins from the apertures to form a corresponding set of apertures through the layer of metal and ceramic fibers, drying the layer of metal and ceramic fibers to remove moisture, applying colloidal silica to the layer of metal and ceramic fibers, and drying the burner surface.
Abstract:
Combustion control systems for maintaining a selected fuel-air ratio for a combustion apparatus supplied with air at a substantially constant volumetric rate are improved by means for adjusting the flow rate of fuel in relation to temperature fluctuations of the air. A temperature sensor positioned in the air stream before it mixes with the fuel is connected to a converter which transmits converted temperature signals from the sensor as adjustments of a remote control-flow regulator in the fuel line or in the air stream. Thus, if the flow regulator is in the fuel line, a drop in air temperature will cause an increase of the fuel flow rate. Conversely, a rise in air temperature will result in a reduced fuel flow rate. If the flow regulator is in the air stream, a drop in air temperature will cause a decrease in the air flow rate, while a rise in air temperature will result in increased air flow rate. The invention is also applicable to temperature variations of the fuel by using the three basic components: a temperature sensor, a converter and a remote control-flow regulator.
Abstract:
The present invention is a method and apparatus to improve the utilization of flow and power characteristics of a combustion air fan over the full range of burner operation. More specifically, it is an apparatus and a method of operation that uses a high flue-gas-to-air ratio over most of the boiler operating range to maximize thermal efficiency, but which switches to a lower ratio of flue-gas-to-air, or no flue gas in the limiting case, at the high end of the mass flow range of the burner to minimize the size of the fan housing and fan motor. When applied to current generation ULNBs, fan size can be reduced about 50% and operating power consumption can be reduced by about 50% without adversely affecting NOx emissions.
Abstract:
System and apparatus for monitoring vibrational and other detected aspects of a machine. Transducer outputs are scanned through the use of a microprocessor, the memory components of which retain pre-determined set point information. The channel representing a given transducer output is displayed visually on the apparatus for 5 second intervals in combination with a linear form of disply showing monitored transducer values as well as set point values. In the event of detected threshhold level warnings or the like, additional visual indicators representing both system and channel status conditions are energized. The system includes a small, hand-held programmer by which any of a broad variety of functions may be readily entered into the memory of the processor through the simple manipulation of a single potentiometer. During the programming procedure, the values being inserted are displayed on the noted bar chart. Preferably, the chart is present as a linear array of 50 LEDs.
Abstract:
A burner surface and creation method are provided. The burner surface includes a frame with a compact layer of unsintered metal and ceramic fibers that have been vacuum cast to a surface of the frame. The layer of unsintered metal and ceramic fibers is not greater than 0.5 inches, and is created without using substantial amounts of polymer pore forming or binding agents. The frame and compact layer additionally include a plurality of apertures that form holes through the burner surface plate. The burner surface plate may be formed by attaching a perforated screen to a fixture, inserting pins through apertures in the screen, introducing a suspension of metal and ceramic fibers into a space above the screen, vacuum casting the metal and ceramic fibers onto the screen to form a layer of metal and ceramic fibers, removing the plurality of pins from the apertures to form a corresponding set of apertures through the layer of metal and ceramic fibers, drying the layer of metal and ceramic fibers to remove moisture, applying colloidal silica to the layer of metal and ceramic fibers, and drying the burner surface.
Abstract:
Described are techniques for simulation of a data storage system configuration. The simulation state reflects the data storage system configuration in accordance with an application programming interface (API) model. API calls result in reading existing data storage system configuration data and/or modifying the configuration data by execution of one or more low level calls. A daemon may operate in a simulation mode in which the low level calls are simulated rather than resulting in communications with a data storage system when operating in a non-simulation mode. A low level cache is used to store simulated values returned from the data storage system microcode. A high level cache is used to store API call return data. A seed file is used to initialize the simulation state.