Gts 8xxgpa 65 traffic advisory system tas and traffic collision avoidance system tcas i. Trimmer line assist handle bolt carriage, 1420 wing nut shield assembly storage warning. Design and development of a 2d electronically scanned, dual. Cartridges are combined as a single, customer replaceable unit cru for easier, faster maintenance. Dualpolarization line replaceable unit lru for airborne phased array radar for atmospheric research jorge l. Repair at backshops is known as fieldlevel maintenance or intermediatelevel ilevel maintenance. The rugged chassis receives signals from external world through the sma connectors. This modular approach allows the various components to be mounted either behind each of the displays, or in remote locations in the aircraft, based upon the needs of the aircraft manufacturer. Once you have installed the fips card fieldreplaceable unit in a cisco nac331033503390 chassis, it becomes fipscompliant and to appropriately handle any problems arising with either the chassis or the fips card, itself, you must rma the appliance with cisco systems and obtain a replacement cisco nac331033503390. In total, 56 lrus will be needed to populate the full airborne phased array antenna. Pdf the needs of aircraft avionics radio line replaceable unit.
The term derives from maintenance that can be done on the flight line, rather than moving the aircraft into a maintenance facility. How to update frusdr field replaceable unitsensor data. This standard establishes nasas minimum requirements for, but not all details of, the design, construction, testing, inspection, maintenance, operation, and personnel licensing of lifting devices and equipment lde listed in section 1. Dualpolarization linereplaceable unit lru for airborne phased array radar for atmospheric research jorge l.
Repair at backshops is known as fieldlevel maintenance or intermediatelevel ilevel maintenance srus are similar in nature to linereplaceable units lrus, but rather than being complete functional units. Designing line replaceable units from the maintainability perspective in designing line replaceable units lrus, due to constraints enforced during the aircraft engine design phase, maintenance personnel find it difficult to execute the routine repairs and overhauling of the aircrafts engine parts. The cards being securely held in place when the cover of the lru is screwed on thereby actuating a spring which transfers force to the circuit cards. Maintenance of supplies and equipment soldiers guide for. Iuid will be instrumental in tracking and reporting the value of items the government owns. The line replaceable unit definition problem request pdf.
The aforementioned study revealed that most of the maintenance time and effort associated with the apq109 was expended in adjustmenttype repairs rather than in the replacement of failed parts or line replaceable units lrus. The lru definition problem is a maintenance policy decision that should be considered as a part of strategic or tactical maintenance planning. A physical item that is replaced is called a line replaceable unit lru. Experimental design and implementation plan power radio frequency lprf display and indicators shop 6625011938861wf multifunction display mfd microwave shop 1270012383662wf dual mode transmitter dmt 12700126867wf low noise assembly lna note. An avionics line replaceable unit lru, of the type having numerous electronic circuit cards disposed therein in a parallel fashion. May 17, 2011 to remove the line replaceable unit 104, one can use, for example, a screwdriver or allen wrench to rotate each of the visual position elements 110 and 1101 by 90 degrees or about 90 degrees in the direction of arrow a, so that their flanges 126 and 1261 extend outwardly from slots 128 and 1281 in fixing blocks 106 and 1061 as shown in fig. Replaceable service parts replacement part spool with 0. Any safety argument must be made with reference to the system level under consideration. Nif laser line replaceable units lrus unt digital library. Line replaceable modules to drive new standards vita.
This testing capability includes testing, fault detection and isolation of a line. Introduction to maintain capital assets, a typical maintenance organization repairs them by replacing failed items repairby replacement. Introduction to maintain capital assets, a typical maintenance organization repairs them by replacing failed items repairbyreplacement. The gea 71 interfaces with various sensors on the aircraft and communicates airframe and engine information via. A first line replaceable unit lru forming at least part of an integrated avionics system, the avionics.
Lrus are modular by design so you can have the aircraft up and running while the faulty lru is being repaired. Line replaceable modules to drive new standards, with its roots in the dynamic personal computer pc, rugged eurocard, and legacy vxi markets, the pxi specification is providing the guidance for a new generation of higher performance, lower cost test equipment. A shop replaceable unit sru or shop replaceable component src is a modular component of an airplane, ship or spacecraft that is designed to be replaced by a technician at a backshop. To maintain capital assets, a typical maintenance organization repairs them by replacing failed items repairbyreplacement. Salazar, eric loew, peisang tsai, jothiram vivekanandan and wen chau lee national center for atmospheric research ncar 3450 mitchell lane boulder, co 80301, usa v. Apc surge module for cat6 or cat55e network line, replaceable, 1u, use with prm4 or prm24 chassis protects an ethernet data port from damaging transients. To remove the line replaceable unit 104, one can use, for example, a screwdriver or allen wrench to rotate each of the visual position elements 110 and 1101 by 90 degrees or about 90 degrees in the direction of arrow a, so that their flanges 126 and 1261 extend outwardly from slots 128 and 1281 in fixing blocks 106 and 1061 as shown in fig. When assessing an electrical fault, the airline maintenance team must look through each of those pages to identify the wdm diagram pages that are applicable to the airplane tail number. Avionics line replaceable unit with frameless spring ramp.
Defining line replaceable units request pdf researchgate. Loadstar configures sps by lru line replaceable unit, aircraft type and customer part number and distributes them through the arinc 615a softwares highspeed ethernet link to a data loader, such as teledynes pdl615msd, which enables maintenance to perform multidisk or electronic data. Pdf for the local aircraft maintenance industry, radio line replaceable unit lru has been essential in aircrafts airworthiness but. Many of these lrus are optomechanical assemblies that are roughly the. Srus are similar in nature to line replaceable units. Request pdf on jan 1, 20, jorge eduardo parada puig and others published the line replaceable unit definition problem find, read and cite all the research you need on researchgate. Volume 247, issue 1, 16 november 2015, pages 310320. Publications and training solutions course syllabus.
An lru may be a printed circuit board, black box, component, major component, alternator, carburetor, avionics, tank engine, road wheel assembly installed weapons, and so forth. When considering where to mount a linereplaceable unit lru, you must consider how delicate or robust the lru is. According to the invention, the line replaceable unit comprises. This handbook is intended to aid acquisition organizations in procuring intermittent fault. Field replaceable unit fru is a component, part, or assembly that can be easily removed from a system and replaced by the user or technician without having to send the entire system to a repair facility. It also incorporates wavelogic 3 extreme coherent optical processors to increase transport. It provides simple, scalable metro dci in a rackandstack 1ru formfactor. A linereplaceable unit lru, lower linereplaceable unit llru, citation needed linereplaceable component lrc, or linereplaceable item lri is a modular component of an airplane, ship or spacecraft or any other manufactured device that is designed to be replaced quickly at an operating location 1st line. The item that is replaced is called the line replaceable unit lru, and the so called lru definition problem is the problem of deciding on which item to replace. It can also be a very timeconsuming process an electrical wiring manual may have 75 pages between a line replaceable unit and its associated connector.
Defective capital assets may be quickly restored to their operational condition by replacing the item that has failed. Design and development of a 2d electronically scanned. Defining line replaceable units eindhoven university of. Designing line replaceable units from the maintainability perspective in designing line replaceable units lrus, due to constraints enforced during the aircraft engine design phase, maintenance personnel find it difficult to execute the routine repairs. Trimmer line t s i t l o m6x1 knob bolt storage warning. Line replaceable units lru are a general term for components, of complex systems such as aircraft, that can be replaced quickly, and generally with a minimum of tools. Mounting device for a line replaceable unit in an aircraft. Stop the unit and disconnect the power source when not in use. A shopreplaceable unit sru or shopreplaceable component src is a modular component of an airplane, ship or spacecraft that is designed to be replaced by a technician at a backshop. Line replaceable unit lru, and the socalled lru definition problem is. Cisco nac appliance fips card fieldreplaceable unit. Salazar, eric loew, peisang tsai, jothiram vivekanandan and wen chau lee national center for atmospheric research ncar 3450. Metrics pilot project for military avionics sustainment.
Line replaceable unit an overview sciencedirect topics. The gea 71 is a microprocessor based inputoutput line replaceable unit lru used to monitor sensor inputs and drive annunciator outputs for aircraft airframe and engine systems. The subject matter of the invention is a line replaceable unit lru 2 for an aircraft 1. A line replaceable unit lru, lower line replaceable unit llru, citation needed line replaceable component lrc, or line replaceable item lri is a modular component of an airplane, ship or spacecraft or any other manufactured device that is designed to be replaced quickly at an operating location 1st line. Parada puig, robertus johannes ida basten and leonardus adriana maria van dongen topics. Designing line replaceable units from the maintainability.
Virtually all of the nifs active components are assembled in one of the approx4000 electrical and optical lrus that serve between two and eight of nifs 192 laser beam lines. Users may download and print one copy of any publication from the. Ncars earth observing laboratory eol is conducting a 2year project to develop a small, prototype array that will be used as proof of concept for this future airborne radar. The theory is a basis for a long line of research contributions and industrial applications especially for the dfx areas not reported here and. A linereplaceable unit lru, lower linereplaceable unit llru, line replaceable component. The project involved design, development and validation of the hardware along with qualification. The ground vehicular transceiver is a single line replaceable unit lru, while the aviation transceiver is a twolru design that separates the antenna and rf assembly from the modem assembly to offer better aerodynamic performance. Line replaceable unit lru a combination of componentsmodules.
The invention relates to a line replaceable unit lru 2 for an aircraft 1. Iuid will enable the dod to obtain a clean audit opinion through the ability to track and account for items uniquely. If you wish to contribute or participate in the discussions about articles you are invited to join skybrary as a registered user. Us20110166749a1 line replaceable unit for an aircraft. Digital processing line replaceable unit coreel technologies. Pm fbcb2s nextgeneration situational awareness system. Dpap program development and implementation unique. Lrus or line replaceable units are units meaning it might be anything you can replace between the procedures given in the maintenance manual and need no further rework or approval. Line replaceable unit lru a combination of componentsmodules installed in an item of equipment or system that is replaceable in the operational environment that is, under field or combat conditions.
Apart from engine component repairs, engine module maintenance and engine teardown mtu maintenances. Digital processing line replaceable unit dplru digital processing line replaceable unit dp lru is used in aerostat for electronic warfare application. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a. Waveserver was created to provide a serverlike experience for webscale applications. The item that is replaced is called the line replaceable unit lru, and the socalled lru definition problem is the problem of deciding on which item to replace upon each type of failure. Many of these lrus are optomechanical assemblies that are roughly the size of a. Publishers pdf, also known as version of record includes final page, issue. Therefore, by using the system levels set out in the example fig. The chassis or backplanes may contain hundreds to thousands of conductive paths and solder connections. Weed eater 115253326 instruction manual pdf download. Accounting and valuation under secretary of defense for. Line replaceable unit for uav lruuav line replaceable unit for uav lruuav is used in unmanned aerial vehicle uav for electronic warfare application. Varkey quest global maintainability assessment of an engine or unit helps in identifying and validating whether or not the actual design of an engine or unit meets the maintainability characteristics for example, ease of accessibility, the. The national ignition facility nif is designed with its high value optical systems in cassettes called line replaceable units lrus.877 1537 1530 245 729 957 1483 1442 1045 667 1371 304 588 968 73 1082 486 666 1422 137 866 868 1235 1028 1246 226 354 1369 856 1351 649 310 889 893 905 64