145 results about "Line-replaceable unit" patented technology

A structural grid is provided with continuous and discontinuous beam members coupled by splices, a front structure coupled to the structural grid, the front structure including a walkway and cables, a radome coupled to the front structure. The structural grid is coupled to a plurality of antenna subassemblies. The antenna subassemblies have a forward housing including an RF manifold coupled to a circulator, an aft housing coupled to the forward housing, containing a line replaceable unit that is serviceable or maintainable through the aft housing.

An apparatus and method for combining the functionality of multiple airborne traffic surveillance systems that operate in the L-band frequency range. The apparatus and method combine the functionality of both a Traffic Alert Collision Avoidance System (TCAS) and a Mode-Select (Mode-S) transponder in an integrated L-band traffic surveillance apparatus having a single processor that is embodied in a single Line Replaceable Unit.

A system server is used to manage communication over a network between the system server and a plurality of physical devices of a passenger entertainment system. The system is configured and operated using software to provide passenger entertainment. The system server comprises software for instantiating a dispatch object to open a framework network addressable unit objects, for instantiating one or more virtual line replaceable unit objects to manage communication between a network address unit and physical devices, and for communicating network messages through the dispatch object to the physical devices. The dispatch object tracks messages to the physical devices utilizing a queue and tracks messages from the physical devices utilizing a queue. The dispatch object maintains the status of related devices. The dispatch object also adds and removes one or more of the virtual line replaceable units. The network addressable unit objects move data from one storage location to another.

A computer is used to manage communication over a network between one or more network addressable units and a plurality of physical devices of a passenger entertainment system. The system is configured and operated using software to provide passenger entertainment services including audio and video on-demand, information dissemination, product and service order processing, video teleconferencing and data communication services. The system includes a system server and a network supporting multiple computer processors. The processors and the server comprise application software that control telephony applications and network services. The server is coupled by way of the network to physical devices of the system. The server comprises software for instantiating a dispatch object to open a framework for one or more network addressable unit objects, for instantiating one or more virtual line replaceable unit objects to manage communication between a network address unit and one or more physical devices, and for instantiating a message processor for moving messages to the one or more network addressable unit objects for delivery to the one or more physical devices. The message processor receives messages containing network routing address from one or more device drivers. The message processor utilizes the network routing address to and a physical device type to access a table and determine the ultimate destination for the message. The message processor has at least one input named pipe and one output named pipe, and utilizes the named pipes to translate messages from a first format to a second format. The message processor logs invalid destination addresses in a storage medium. The message processor instantiates each device driver from a device handler class member.

A prognostic processor for predicting machine failure in avionics electronics comprises prognostic capabilities in a single integrated circuit, with a processor, volatile and non-volatile memory, clock, on-chip and off-chip sensors and transducers, A / D converters, a common I / O interface adapted to be employed in a network of similar prognostic processors, and predictive Failure Analysis (FA) model software, which may be distributed throughout the network. The FA software employs a log file history, with the log file history storing data collected by the prognostic processor, real-time execution of a predictive model, with the ability to update the FA model with data from field failures. The prognostic processor network supports hierarchical processing to work with multiple prognostic processors. The prognostic processor system is applicable to FA monitoring of a wide range of avionics electronic equipment, in particular, Line Replacement Units (LRUs).

A method and system are provided for updating software configurations of line-replaceable unit (LRU) computers in a restricted architecture network such as an in-flight entertainment system (IFES). Operating in an efficient and parallel manner, each of the LRUs independently creates an individual configuration file that identifies current software components. Each of the LRUs transmits its respective configuration file to a configuration server either automatically upon startup or manually upon request. The configuration server updates a system configuration data file with the current configuration files received from the individual LRUs. In a downloading method, a download server sends a list of desired software components to the LRUs. Each of the LRUs independently and simultaneously transfer (download) the needed software from the download server. The LRU independently requests the download server to download the needed software components. To improve scalability and reliability, the file transfers utilize standard protocols, such as FTP.

There is disclosed a system and method for providing an improved common control bus for use in the on-line insertion of line replaceable units (such as circuit board cards) into a backplane of a processor shelf, a modem shelf, or a similar type of equipment. The present invention increases the number of device locations that a common control bus can access. The present invention comprises a complex programmable logic device on a circuit board card that is coupled to a common control bus. The complex programmable logic device is capable of selectively coupling to the common control bus each one of a plurality of device locations on the circuit board card. The complex programmable logic device controls data access to and from each device that is coupled to the common control bus.

The present invention resides in a system, method and an article of manufacture for transmitting maintenance and diagnostic data from an aircraft. The system has an aircraft, a cellular infrastructures and a data reception unit. The aircraft has an avionics system and a communications unit. The avionics system has a plurality of line replaceable units, and the communications unit is connected to each line replaceable, unit. The cellular infrastructure is in communication with said communications unit after the aircraft has landed. The communication is initiated automatically upon the landing of the aircraft. The data reception unit is connected to the cellular infrastructure.

Apparatus and systems are provided for dual redundant avionics networks wherein a remote data concentrator (RDC) includes, but is not limited to, a line replaceable unit (LRU) input, a first processing lane coupled to the LRU input, a second processing lane coupled to the LRU input, and a processor coupled to the first processing lane and the second processing lane. The first processing lane has a first output. The second processing lane has a second output. The processor has a link coupling the first processing lane with the second processing lane and is configured to route data from at least one of the first output and the second output to an Ethernet. The link is configured to transfer data between the first processing lane and the second processing lane.

A method includes providing a field replaceable unit having a memory device. A first data element including dynamic information associated with the service life of the field replaceable unit is generated. A first tag is generated for the first data element. The first tag is prepended to the first data element to generate a first tagged data element. The first tagged data element is stored in the memory device. A computing system includes a field replaceable unit having a memory device configured to store a first tagged data element, the first tagged data element including a first data element including dynamic information associated with the service life of the field replaceable unit and a first tag associated with the first data element.

A modular, scalable, extensible, In-Flight Entertainment (IFE) data communication system is described. In one embodiment, a server / switch line replaceable unit including at least one server, at least one switching element and a plurality of fiber optic transceivers communicates with a plurality of passenger seat video display units over fiber optic cables. A server, such as, for example, an audio server, a video server, an audio / video server, a game server, an application server, a file server, etc, provides data (e.g., entertainment programming, internet file data, etc.) to the video display unit. In one embodiment, a hybrid switch unit provides flexible communication between one or more servers and the passenger seats.

Systems and methods are provided for data collection in an avionics network. The avionics system comprises a first network switch having an output and a plurality of network inputs and a monitor unit coupled to the output of the first network switch. Each of the plurality of network inputs is configured to couple with a line replaceable unit (LRU). The first network switch is configured to receive a first data from a first LRU via a first network input of the plurality of network inputs of the first network switch, and copy the first data to produce a first copied data. The monitor unit is configured to receive the first copied data from the first network switch. The method comprises the steps of copying the data frames received by a switch from an end system for each of the switches in a deterministic switched network to produce copied data frames at each of the switches in the deterministic switched network, and receiving the copied data frames from a set of switches of the switches in the deterministic switched network at a monitor unit.

A universal on-board system is provided for automatic fault detection and on-the-spot repair instructions that includes a module adapted to be coupled to a wide variety of platforms and Line Replaceable Units.

A system is provided that comprises a vehicle (e.g., aircraft) including a plurality of modules (e.g., line-replaceable units—LRU's) capable of communicating over a plurality of buses (e.g., Mil-Std-1553 buses). The system also includes an advanced wireless open data controller (AWOC) capable of receiving data output onto the buses of the vehicle during operation of the vehicle, such as during flight of an aircraft. The AWOC is also capable of comparing the output data to a database of known events of the modules. Then, when the output data matches a known event for at least one module, the AWOC is capable of identifying an event. The AWOC can package event data including the identified event. A data unit, also included within the system, is capable of transmitting the packaged event data external to the vehicle at least partially over a wireless communication link.

Systems and methods for replacing modules of a personal communication structure are provided. The modules are configured to be field replaceable, such that field service personnel are able to quickly and easily replace modules in locations with high pedestrian traffic. Embodiments of the personal communication structure include a frame and one or more field replaceable units supported by the frame. The field replaceable units may include an RF bay field replaceable unit, a display field replaceable unit, a user interface field replaceable unit, an environmental sensor field replaceable unit, an electronics bay field replaceable unit, and / or a network bay field replaceable unit.

An entertainment system that exhibits advantages of fiber-to-the-seat systems, has improved failure recovery characteristics, and reduces the connection components is disclosed. In one aspect, an inflight entertainment system comprises a plurality of head end line replaceable units physically interconnected in a ring configuration and a plurality of serially-connected networking line replaceable units physically interconnected in a serial configuration, wherein two of the serially-connected networking line replaceable units at the edge of the serial configuration are physically interconnected with two of the head end line replaceable units, respectively, wherein a loop-free head end data path is maintained between active head end line replaceable units by regulating link participation in the head end data path, and wherein one or more loop-free serially-connected networking data paths are maintained between at least one of the two head end line replaceable units and active serially-connected networking line replaceable units by regulating link participation in the serially-connected networking data paths.

The invention discloses a method for predicting spare part demand in an equipment manufacturing process. The method comprises the following steps of: 1, directly acquiring an achieved availability (Aa) index, mean time between failures (MTBF), mean time to repair (MTTR) and mean preventive maintenance time (MPMT) of equipment; 2, acquiring mean waiting time (WT) of system level spare parts; 3, distributing the WT of the system level spare parts and acquiring waiting time WTi of a subsystem; 4, acquiring the waiting time WTij of each of line replaceable unit (LRU) level products which form the subsystem by a Dephi distribution method; 5, acquiring a spare part out-of-stock expected value EBOij and an inventory level sij of the LRU; and 6, acquiring a spare part fill rate according to the inventory level sij. A quantitative relation between spare part waiting time and equipment availability is established and spare part planning is always performed based on a user demand and a manufacturing requirement. Due to the combination of an equal distribution method and a Dephi method, the method has high flexibility and can be suitable for various stages of engineering development.

A unit for use as a solid state drive (SSD) system. The unit may include a number of removable components that can be field serviced without having to replace the entire unit and without having to remove the unit from its operational rack support structure.

Systems and methods of retrofitting a commercial passenger aircraft with a mounting system that secures and protects a line replaceable unit (LRU) are disclosed. An exemplary embodiment is a mounting system for a regulatory compliant passenger power outlet system.

A modular, scalable, extensible, In-Flight Entertainment (IFE) data communication system is described. In one embodiment, the system comprises a hub providing connection between one or more server / switch line replaceable unit including at least one server and a plurality of passenger video display units. A server, such as, for example, an audio server, a video server, an audio / video server, a game server, an application server, a file server, etc., provides data (e.g., entertainment programming, internet file data, etc.) to the video display unit. In one embodiment, the connection between the plurality of server / switch line replacement units, the hub and the plurality of video display units is provided by passive fiber optic links.

An element support and thermal control arrangement for an active array antenna, preferably modular, using line-replaceable units (LRUs), includes a radiating-side liquid-cooled cold plate lying parallel with a liquid-cooled TR coldplate. Antenna elements are supported and cooled by the radiating cold plate, and a beamformer lies between the radiating and TR coldplates. A plurality of column coldplates are attached to the rear of the TR coldplate and define bays or volumes in which power LRUs can be fitted in thermal communication with the TR coldplate, the column coldplates, or both.

A system is provided that comprises a vehicle (e.g., aircraft) including a plurality of modules (e.g., line-replaceable units—LRU's) capable of communicating over a plurality of buses (e.g., Mil-Std-1553 buses). The system also includes an advanced wireless open data controller (AWOC) capable of receiving data output onto the buses of the vehicle during operation of the vehicle, such as during flight of an aircraft. The AWOC is also capable of comparing the output data to a database of known events of the modules. Then, when the output data matches a known event for at least one module, the AWOC is capable of identifying an event. The AWOC can package event data including the identified event. A data unit, also included within the system, is capable of transmitting the packaged event data external to the vehicle at least partially over a wireless communication link.

A line-replaceable unit for a phased array antenna including a thermally conductive housing having a front face and an opposed rear face, at least one open-ended waveguide extending through the housing from the front face to the rear face, at least one first radiating element including the waveguide and adapted to emit energy in a first frequency band; and at least one second radiating element positioned on the front face of the housing and adapted to emit energy in a second frequency band distinct from the first frequency band. The waveguide is dimensioned to pass energy in the first frequency band and is exposed to the environment outside the housing at the front and rear faces to define a cooling duct passing through the housing.