Line-replaceable unit

Abstract: A data communication analysis and simulation tool capable of simulating in real time the transmissions and data responses of at least one line replaceable unit communicating on at least one communication bus with at least one line replaceable unit under test, comprising a computer operating under a real time operating system and having available memory and means for accepting user input, and a programmed simulator resident in said computer comprising a plurality of processes to effectuate the simulation of the transmissions and data responses of at least one line replaceable unit. The programmed simulator allocates a portion of the available memory as a shared memory segment serving as a central database and supporting inter-process communication. The programmed simulator further generates graphical and textural images in response to communicated data from the line replaceable unit under test and user input to a monitor coupled to the computer. The programmed simulator inputs digital and analog inputs and updates the data transmissions in real time, inputs communication data and outputs digital outputs in real time, and maintains data validity and freshness in real time. It allows entry of named engineering unit data to be transmitted and displays received data in engineering units. The simulator is automatically configured for transmission from user defined text file simplifying adaptation. Further, the simulator allows user defined configuration and monitor conditions to be inputed and saved by the user.

Abstract: MIT Lincoln Laboratory and M/A-COM are jointly conducting a technology demonstration of affordable Multifunction Phased Array Radar (MPAR) technology for Next Generation air traffic control and national weather surveillance services. Aggressive cost and performance goals have been established for the system. The array architecture and its realization using custom Transmit and Receive Integrated Circuits and a panel-based Line Replaceable Unit (LRU) will be presented. A program plan for risk reduction and system demonstration will be outlined.

Abstract: 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.

Abstract: MIT Lincoln Laboratory and M/A-COM are jointly conducting a technology demonstration of affordable Multifunction Phased Array Radar (MPAR) technology for Next Generation air traffic control and national weather surveillance services. Aggressive cost and performance goals have been established for the system. The array architecture and its realization using custom Transmit and Receive Integrated Circuits and a panel-based Line Replaceable Unit (LRU) will be presented. A program plan for risk reduction and system demonstration will be outlined.