Abstract: The subject application is directed to burners for gas turbine engines that use a pilot flame to assist in sustaining and stabilizing the combustion process. An embodiment of the disclosed burners includes, inter alia, a burner housing, a pilot combustor and a quencher. The burner housing has axially opposed upstream and downstream end portions. Additionally, the housing has at least one main fuel inlet passage and at least one main air inlet passage which are adapted to supply fuel and air respectively to an internal chamber defined in the housing. The pilot combustor is disposed along the axis of the burner housing and has an inlet for receiving a rich fuel and air mixture, a combustion chamber within which the rich fuel and air mixture is combusted into combustion products, and an outlet for exhausting the combustion products from the combustion chamber. The quencher is disposed within the internal chamber of the burner housing along the central axis and positioned at the outlet of the pilot combustor.

Abstract: A system and method, including software implemented techniques, can be used to adjust for sag in stored data values. Charge is applied to multiple memory cells, and each memory cell is charged to a target voltage corresponding to a data value. The memory cells include a reference cell that is charged to a predetermined voltage. A voltage level in the reference cell is detected, and voltage levels from a group of memory cells are also detected. An adjustment is performed based upon the difference between the detected voltage level in the reference cell and the predetermined voltage.

Abstract: Techniques for reducing mount time for a peripheral device connected to an external host device are presented. In some implementations, when a connection is detected, file system data is pre-fetched before a request for such data is sent by the external host device. This allows faster access to the file system data used for initiating read/write communications. In other implementations, in response to a data access command from the external host device, a reply message is delayed from the peripheral device to prevent data access command failures. This delayed response prevents the external host device from pausing before attempting subsequent communication requests.

Abstract: A host processor is coupled to a memory controller and configurable to retrieve from the memory controller information indicative of the health of a non-volatile memory device operatively coupled to the memory controller. A host system uses the information to monitor the health of the non-volatile memory device.

Abstract: Techniques for reducing dismount time for a peripheral device connected to an external host device are presented. Instead of waiting for a dismount procedure to complete, a reply message indicating that dismount operations have been completed is sent to the external host device. This triggers a message from the external host device that the peripheral device is ready to be safely removed. The peripheral device completes the dismount operations including cache and memory cleanup after the reply message indicating that dismount operations have been completed is sent to the external host device. The dismount operations may be completed under battery power if necessary. This enables quicker unplugging of the peripheral device from the external host device and can allow the peripheral device to transition from a first mode into a second mode faster.

Abstract: A host processor is coupled to a memory controller and configured to retrieve from the memory controller at least one attribute of at least one non-volatile memory device operatively coupled to the memory controller. A memory management policy is modified based on the attribute.

Abstract: The subject application is directed to burners for gas turbine engines that use a pilot flame to assist in sustaining and stabilizing the combustion process. An embodiment of the disclosed burners includes, inter alia, a burner housing, a pilot combustor and a quencher. The burner housing has axially opposed upstream and downstream end portions. Additionally, the housing has at least one main fuel inlet passage and at least one main air inlet passage which are adapted to supply fuel and air respectively to an internal chamber defined in the housing. The pilot combustor is disposed along the axis of the burner housing and has an inlet for receiving a rich fuel and air mixture, a combustion chamber within which the rich fuel and air mixture is combusted into combustion products, and an outlet for exhausting the combustion products from the combustion chamber. The quencher is disposed within the internal chamber of the burner housing along the central axis and positioned at the outlet of the pilot combustor.

Abstract: Apparatus and associated systems, methods and computer program products relate to using information stored in a flash memory to adjust the operating voltage supplied to the flash memory. The voltage information indicates a minimum operating voltage at which to operate the flash memory device. In general, operating a flash memory device near a minimal operating voltage may substantially minimize power consumption. The minimum operating voltage for individual flash memory devices may vary from IC to IC, by manufacturing lot, and by manufacturer. In a product, the minimum operating voltage for a particular flash memory may be determined, for example, by a controller built-in to a flash memory reporting (automatically or in response to a query) the minimum operating voltage (e.g., 2.5 V, 3.15 V) to a memory controller or microprocessor. The stored voltage information may further include information to adjust the operating voltage based on temperature.

Abstract: A method for managing data storage is described. The method includes receiving data from an external host at a peripheral storage device, detecting a file system type of the external host, and adapting a caching policy for transmitting the data to a memory accessible by the storage device, wherein the caching policy is based on the detected file system type. The detection of the file system type can be based on the received data. The detection bases can include a size of the received data. In some implementations, the detection of the file system type can be based on accessing the memory for file system type indicators that are associated with a unique file system type. Adapting the caching policy can reduce a number of data transmissions to the memory. The detected file system type can be a file allocation table (FAT) system type.

Abstract: Articles of manufacture and associated methods and systems can be implemented for identifying a condition in which a voltage level being supplied to a data storage device (DSD) may be increased as needed to operate the data storage device. Upon identifying such a condition, the voltage level supplied to the DSD may be increased incrementally. In some implementations, a controller signals a voltage regulator to increment a DSD supply voltage in response to a determination that the present voltage level is insufficient to operate at a desired performance level. The voltage level supplied to a DSD may be adjusted when power is applied to the DSD from an unpowered state, and/or during operation of the DSD. Automatically increasing the voltage supplied to a DSD as needed to support operation may promote high efficiency at low voltages and extended service life at higher voltages.

Abstract: Articles and associated methods and systems relate to disabling defective flash memory dies in a device containing multiple flash memory dies. Packages containing multiple flash memory dies may be labeled to indicate a flash memory data storage capacity based on the flash memory dies that are not disabled. Various disabling methods may be applied at the die level, package level, and/or board level.

Abstract: Articles and associated methods and systems relate to selecting read interleaving policies independently of selecting write interleaving policies. In various implementations, the selection may be static or dynamic during operation. In implementations that dynamically select read interleaving policies and write interleaving policies, the selection may be based on various operating conditions, such as temperature, power source, battery voltage, and operating mode. Examples of operating modes may include (1) reading or writing to flash memory when connected to an external power source, (2) reading from flash memory when powered by portable power source (e.g., battery), and (3) writing to flash memory when powered by a portable power source.

Abstract: A valve assembly is disclosed for modulating the flow of fuel to a fuel nozzle at a high frequency or in a stepped manner to actively control combustion in a gas turbine engine which includes a valve housing defining an inlet portion for receiving fuel from a fuel source at an initial flow rate and an outlet portion for delivering fuel to a fuel nozzle at the initial flow rate or a modulated flow rate depending upon a detected combustion condition, and a mechanism disposed within the valve housing for modulating the flow rate of fuel to the outlet portion in response to a detected combustion condition.

Abstract: A system is disclosed for actively controlling combustion in a gas turbine engine, which includes a fuel injector for issuing fuel into a combustion chamber of the gas turbine engine. The fuel injector has a dynamic pressure sensor for measuring acoustic pressure within the combustion chamber and a flame sensor for observing flame characteristics within the combustion chamber. The system further includes a high speed valve assembly for controlling flow of fuel to the injector and an electronic controller associated with the fuel injector for commanding the valve assembly to deliver fuel to the fuel injector at a commanded flow rate, based upon input from the sensors in the fuel injector.

Abstract: Improved techniques for performing data transfer with respect to a portable electronic device are disclosed. The improved techniques enable the rate of data transfer to be dependent on at least one battery attribute of a battery utilized by the portable electronic device. As an example, the at least one battery attribute can be associated with a charge level of the battery. In one embodiment, when the charge level of the battery is deemed low, the rate of data transfer can be restricted, thereby reducing the rate of power consumption. Typically, data transfer is performed between the portable electronic device and a host device via a cable. The cable also provides power from the host device to the portable electronic device. Hence, by reducing the rate of data transfer when the charge level of the battery is low, power consumption of the portable electronic device can be controlled so that it is not more than the amount of power capable of being supplied to the portable electronic device over the cable.

Abstract: A hard disk drive based data archive system emulating a tape archive system includes a hot pluggable multi-drive magazine having a housing for holding a plurality of hard disk drives, each drive connected to receive power and data from the magazine in a controlled fashion, and at least one magazine receiving system for physically receiving the magazine and for thereupon providing power, data and control connections to the magazine, such that when the magazine is received within the magazine receiving system, the hard disk drives selectively receive power and data connections via the magazine and receiving system from a host computer. The magazine may be hot-disconnected from an active computing system environment and removed to an archive rack wherein each disk drive is periodically checked to ensure functionality and to provide some limited-bandwidth data retrieval functions via a network connection to the archive rack.

Abstract: A hard disk drive based data archive system emulating a tape archive system includes a hot pluggable multi-drive magazine having a housing for holding a plurality of hard disk drives, each drive connected to receive power and data from the magazine in a controlled fashion, and at least one magazine receiving system for physically receiving the magazine and for thereupon providing power, data and control connections to the magazine, such that when the magazine is received within the magazine receiving system, the hard disk drives selectively receive power and data connections via the magazine and receiving system from a host computer. The magazine may be hot-disconnected from an active computing system environment and removed to an archive rack wherein each disk drive is periodically checked to ensure functionality and to provide some limited-bandwidth data retrieval functions via a network connection to the archive rack.

Abstract: Disclose is a burner for a gas turbine combustor that uses a central bluff body flame holder and a quarl to shape the recirculation zone in order to stabilize the combustion process. The burner includes, among other elements, a cylindrical main body and a flame holder. The flame holder is disposed within a fuel-air mixing chamber and includes a base portion and an elongated bluff body. The base portion engages with the main body of the burner in a supporting manner and the elongated bluff body extends in an axially downstream direction from the base portion through the internal mixing chamber so as to position a combustion ignition point downstream of the internal mixing chamber. In a representative embodiment, the burner further includes a quarl device disposed adjacent to the downstream end portion of the burner main body. The quarl device defines an interior recirculation chamber and a burner exit.

Abstract: A hard disk drive based data archive system emulating a tape archive system includes a hot pluggable multi-drive magazine having a housing for holding a plurality of hard disk drives, each drive connected to receive power and data from the magazine in a controlled fashion, and at least one magazine receiving system for physically receiving the magazine and for thereupon providing power, data and control connections to the magazine, such that when the magazine is received within the magazine receiving system, the hard disk drives selectively receive power and data connections via the magazine and receiving system from a host computer. The magazine may be hot-disconnected from an active computing system environment and removed to an archive rack wherein each disk drive is periodically checked to ensure functionality and to provide some limited-bandwidth data retrieval functions via a network connection to the archive rack.