EP2135422B1 - Procédé et dispositif de maintenance dans un aéronef - Google Patents

Procédé et dispositif de maintenance dans un aéronef Download PDF

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Publication number
EP2135422B1
EP2135422B1 EP08787915.1A EP08787915A EP2135422B1 EP 2135422 B1 EP2135422 B1 EP 2135422B1 EP 08787915 A EP08787915 A EP 08787915A EP 2135422 B1 EP2135422 B1 EP 2135422B1
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EP
European Patent Office
Prior art keywords
aircraft
maintenance
ground
infrastructure
network
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Active
Application number
EP08787915.1A
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German (de)
English (en)
French (fr)
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EP2135422A1 (fr
Inventor
Frédéric Saugnac
Christian Fremont
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Airbus SAS
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Airbus SAS
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Publication of EP2135422A1 publication Critical patent/EP2135422A1/fr
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808—Diagnosing performance data
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/0004—Transmission of traffic-related information to or from an aircraft
    • G08G5/0013—Transmission of traffic-related information to or from an aircraft with a ground station

Definitions

  • the present invention relates to a method and maintenance device in an aircraft.
  • an avionics system includes a set of tools and embedded databases, in particular to computerize tools, including diagnostic tools, maintenance tools, and documents, such as fault diagnosis manuals or manuals. aircraft operations.
  • tools are now for example now implemented by software or databases.
  • figure 1 a diagram of the maintenance operations carried out in the aircraft and in the ground maintenance base according to a known solution.
  • the maintenance relies on a system, in particular a Central Maintenance Computer 100 ("Central Maintenance Computer”), which collects, consolidates and reports the faults of the replaceable entities of the aircraft LRU 105 ("Line Replacable"). Unit "in English terminology) to assist the flight crew and maintenance personnel in the maintenance procedures.
  • Central Maintenance Computer Central Maintenance Computer 100
  • LRU 105 Line Replacable
  • the faults of the replaceable entities of the aircraft 105 are the subject of alarm management by a computer 110.
  • the central maintenance computer 100 transmits to the company of attachment of the aircraft, including to the maintenance control center MCC (acronym for "Maintenance Control Center” in English terminology), a maintenance message 115 .
  • MCC maintenance control center
  • a maintenance message 115 a maintenance message 115 .
  • a screen 120 is connected to the alarm management computer 110 to display the faults of the replaceable entities of the aircraft 105.
  • logbook in English terminology.
  • This logbook related to the aircraft is filled either by the drivers ("technical logbook” in English terminology) or by cabin crew (“Cabin Logbook” in English terminology).
  • the crew manually entered the mistakes made on the logbook 125 and the flight conditions in which the mistakes occurred.
  • the logbook is retrieved 130 from the aircraft in order to be read on the ground by the MCC 135 maintenance control center. Then, a maintenance technician goes on the plane in order to analyze the faults identified and make a diagnosis 140.
  • the technician then goes to the ground maintenance base to obtain the fault isolation procedure 145.
  • the technician At the end of the fault isolation, the technician returns to the base on the ground in order to obtain the repair procedure 155 and possibly order a replacement part at the spare store.
  • tests 165 are performed to verify the operation after the repair and an acceptance procedure 170 is performed consisting of declaring the aircraft to be able to fly.
  • Another known solution is to memorize in embedded storage media (databases) all fault isolation procedures and all the repair procedures to remove the return trips of the maintenance technician between the aircraft and ground maintenance base.
  • the set of fault isolation procedures and the set of repair procedures represent a large volume of data, which can wait for several gigabytes of data.
  • the tools and documentation are loaded into the computer (s) of the aircraft by a technician in charge of keeping these tools and documents up to date (or synchronizing the embedded databases with the databases on the ground). It is equipped, for example, with a laptop with the latest version of tools and data in memory and goes on the plane to load and update tools and data.
  • an airline typically has a large fleet of aircraft which results in a high cost of maintenance of the tools and documents of the aircraft of its fleet as well as an important configuration management of the data to the ground intended for to be loaded on board aircraft.
  • the present invention aims to remedy at least one of the disadvantages of the techniques and processes of the aforementioned prior art.
  • the invention proposes a method of maintenance in an aircraft, notably allowing the reduction of maintenance costs, the rapid return of the aircraft in operation, the updating of the data and the tools of the aircraft in a manner secure without requiring the intervention of a technician.
  • the invention thus relates to a maintenance method in an aircraft, the aircraft comprising an avionic system, the avionic system comprising a set of operating entities, the avionics system being connected to a ground infrastructure according to at least one support communication, the avionics system communicates with the ground infrastructure in a synchronous communication mode, the synchronous communication mode of establishing a communication link between the avionics system and the ground infrastructure, dedicated to communication between them.
  • the invention provides an aircraft maintenance method for minimizing the cost of maintenance, including limiting the maintenance technician's back and forth between the aircraft and the ground infrastructure and improving access to relevant information. for the maintenance operations of the entire aircraft.
  • test commands in particular issued by a ground maintenance technician using the ground infrastructure, so as to test, as soon as possible, the operating entities of the aircraft with a view, for example, to identify malfunctions of operating entities of the aircraft.
  • the avionics system is connected to the ground infrastructure via at least one communication medium, for example a mobile telephone network, a wireless communication network, a satellite network.
  • a communication medium for example a mobile telephone network, a wireless communication network, a satellite network.
  • the maintenance procedure relies on such a communication medium to view the maintenance data stored in the ground infrastructure and to obtain maintenance data, including the isolation and repair procedures of operating entities. malfunctioning to benefit from updated versions of these procedures.
  • At least one computer tool is shared between the ground infrastructure and the avionics system on board. This tool allows you to perform actions remotely between the ground and the edge. It is thus usable by a single operator installed at a fixed place.
  • the method comprises a step of transmitting at least one malfunction information of said at least one operating entity to the ground infrastructure.
  • the maintenance process is accelerated. Indeed, the malfunctions of the aircraft are emitted to the ground infrastructure of so that the maintenance technicians are informed, for example, before the landing of the aircraft, faults occurred in the entities of operation.
  • the method comprises a preliminary step of diagnosing the dysfunction of said at least one operating entity.
  • the method used in the aircraft makes it possible to recognize a malfunction or fault in at least one of the operating entities.
  • the method comprises a step of isolating the malfunction from the maintenance data obtained.
  • the avionics system and the ground infrastructure are connected by a secure connection, in particular by a virtual private network.
  • the invention also relates to a maintenance device in an aircraft, the aircraft comprising an avionics system, the avionics system comprising a set of operating entities and being connected to a ground infrastructure according to at least one communication medium, the avionic system communicating with the ground infrastructure in a synchronous communication mode, the synchronous communication mode of establishing a communication link between the avionics system and the ground infrastructure, dedicated to communication between them.
  • This device has the same advantages as the maintenance method briefly described above.
  • the present invention finally provides a computer program comprising instructions which, when executed by a computer lead it to implement each of the steps of the maintenance process as described above.
  • an electronic maintenance system capable of carrying out maintenance operations, in particular to replace the paper process by an electronic process.
  • This maintenance system is based on an aircraft on-board infrastructure, that is to say an avionics system comprising in particular a set of functional entities of the aircraft, for example replaceable entities of the aircraft, housing applications for crew and maintenance, ground infrastructure to prepare, customize and manage the data to be used on board for example to perform maintenance operations or obtain data from the aircraft for use on the ground and a connection infrastructure for exchanging data between the ground infrastructure and the on-board infrastructure and for updating the tools and data stored in the on-board infrastructure.
  • an avionics system comprising in particular a set of functional entities of the aircraft, for example replaceable entities of the aircraft, housing applications for crew and maintenance, ground infrastructure to prepare, customize and manage the data to be used on board for example to perform maintenance operations or obtain data from the aircraft for use on the ground and a connection infrastructure for exchanging data between the ground infrastructure and the on-board infrastructure and for updating the tools and data stored in the on-board infrastructure.
  • the ground infrastructure is, for example, present in the maintenance base of the airline of attachment of the aircraft.
  • the figure 2 illustrates an overview of the system used in the invention.
  • This ground infrastructure includes a set of processing units interconnected via a telecommunications network.
  • This network also includes a connection 210, for example an Internet connection in order to be connected to the servers of the aircraft manufacturers or to any third party 215.
  • the ground infrastructure is also connected via a communication network 220 (connection infrastructure) to the aircraft avionics network.
  • the communication network 220 relies for example on a wireless communication medium, for example WIFI or Wimax, a mobile communication medium for example GSM / GPRS or UMTS or a satellite communication medium.
  • the aircraft can be connected to the ground by a wired connection in case of troubleshooting in the event of unavailability of the radio communication.
  • the ground infrastructure network includes a server 225 capable of transmitting data to an aircraft and receiving data from a satellite aircraft, and a server 230 capable of transmitting data to an aircraft and receiving data. data from an aircraft using a wireless communication medium or mobile phone.
  • a portable medium 235 such as a laptop, a USB ("Universal Serial Bus" in English terminology), a CD / DVD, to exchange data with the aircraft .
  • a portable medium 235 such as a laptop, a USB ("Universal Serial Bus" in English terminology), a CD / DVD, to exchange data with the aircraft .
  • the aircraft's infrastructure is a mobile network capable of communicating with the ground infrastructure of the connecting company so as to create a continuity between the on-board infrastructure and the infrastructure in question. ground.
  • the on-board infrastructure communicates with the ground infrastructure according to a synchronous communication mode, this type of communication enabling interactive navigation of documentary sites containing the airplane documentation for example.
  • Synchronous communication consists in establishing a link or communication channel between the avionics system and the ground infrastructure, dedicated to the communication between them, ie it is available when for example one wants to consult data in the ground infrastructure from the aircraft where we want to obtain information stored in the ground infrastructure.
  • the communication between the aircraft and the ground infrastructure is ensured as long as one is not dependent on having or not a channel availability.
  • the communication can be initiated via the on-board infrastructure or via the ground infrastructure.
  • the communication network 220 connecting the on-board infrastructure of an aircraft and the ground infrastructure makes it impossible to carry all the tools and software data on board, but only the essential tools, other data that can be accessed by connection when necessary.
  • a maintenance technician in the aircraft can access the data stored in the ground infrastructure to perform maintenance operations, without going back and forth between the aircraft and the maintenance base.
  • the maintenance technician in the aircraft can perform updates of tools and data stored in the infrastructure of the aircraft.
  • the maintenance technician can update the tools and data in the aircraft from the ground, also known as remote update operation ("remote update" in English terminology).
  • remote update operation also known as remote update operation ("remote update" in English terminology).
  • the maintenance technician can update the status of the aircraft logbook at the end of the maintenance.
  • the pilot or the maintenance operator can consult the ground servers in real time in order to have access to all the servers of the company of attachment of the plane and to simultaneously update the data and tools on board, an operation also called remote operations ("remote operations" in English terminology).
  • a ground technician can order the performance of tests on the avionics system prior to carrying out maintenance operations by issuing commands via the communication network 220.
  • the maintenance technician by example, prior to landing the aircraft, to perform tests to identify the replaceable entities of the aircraft malfunctioning.
  • VPN virtual private network
  • VPN Virtual Private Network
  • a server 300 here on the ground, of the airline, is connected to a link server 320 of the infrastructure on board the aircraft via a virtual network 305.
  • the server of the plane 310 comprises an ANSU network server ("Aircraft Network Server Unit” 315) also connected to the link server 320.
  • ANSU server 315 At the ANSU server 315 are connected, in particular a server interface unit 325, various edge terminals 330, 335, 340 by means of an electronic network routing unit ESU ("Ethernet Switch Unit" according to the English terminology). 345.
  • ESU Electronic Network Switch Unit
  • the electronic storage unit is connected to a Satcom satellite network, the latter being able to be itself connected to the server of the airline.
  • the link server 320 is able to be connected via a network connection, for example a virtual private network, to a server 300 of the airline using different communication media, in particular the mobile telephone network for example, the GSM network ( "Global System for Mobile Communications" in English terminology) / EDGE / UMTS ("Universal Mobile Telecommunications System” in English terminology) / HSDPA ("High Speed Downlink Packet Access” in English terminology) or a network wireless, for example the WIFI 802.11 a / b / g network or a satellite network for example the HSD network ("high speed data Satcom" in English terminology).
  • GSM Global System for Mobile Communications
  • EDGE / UMTS Universal Mobile Telecommunications System
  • HSDPA High Speed Downlink Packet Access
  • the computer network of the aircraft is connected to the ground computer network of the airline of attachment of the aircraft.
  • a medium is selected from the plurality of available communication media, in particular depending on the availability of media of communication or the throughput of communication media.
  • the servers 300 and 330 encapsulate and then decapsulate the data via encryption and encryption mechanisms.
  • These communication supports are capable of providing a high throughput so as to allow the transmission of large amounts of data between the ground infrastructure and the on-board infrastructure of the aircraft in a reasonable time, and in particular to make it possible to the aircraft's ground infrastructure to the aircraft's computers, the latest versions of the tools, data and documents, the loading operation being commanded by a technician on board the aircraft or by a technician at the aircraft ground from the ground infrastructure.
  • this type of connection allows, from the aircraft to reach through Internet connections, servers connected to the ground infrastructure of the airline as the server of the aircraft manufacturer or some major equipment components of the airplane or its cabin.
  • electronic maintenance makes it possible to troubleshoot and maintain an airplane in good flight condition at any time and regardless of its location.
  • remote access in English terminology
  • the maintenance technician aboard the aircraft will access via a connection called remote access (" remote access” in English terminology), including secure for example data present in the company's ground infrastructure, such as the TSM repair manual, the AMM Maintenance Manual (acronym for “ Aircraft Maintenance Manual” ) or the IPC (Acronym for "Identification Part Catalog” in terminology).
  • Anglo-Saxon that identifies the reference of a part to be changed and order it at the replacement store.
  • the technician has via the communication network 220, including the use of a secure VPN type channel, access to the manuals stored in the ground infrastructure, these manuals being the latest versions, such as illustrated in figure 4 , thus limiting the maintenance technician coming and going between the aircraft and the maintenance ground infrastructure.
  • the technician aboard the aircraft goes through remote commands, including consultation commands, access the fault isolation procedure, also called malfunction, diagnosed 145, and the repair procedure isolated fault 155 and possibly the spare parts store, via the communication medium 220.
  • the fault isolation procedure also called malfunction, diagnosed 145
  • the repair procedure isolated fault 155 and possibly the spare parts store via the communication medium 220.
  • this network connection is a synchronous connection.
  • a technician on the ground can, prior to the arrival of the aircraft on the ground, issue commands, via the communication network 220, to the on-board infrastructure in order to realize a certain number of tests in order to diagnose, isolate and repair faults as quickly as possible.
  • the tools in particular the diagnostic tools, and data can be loaded into the on-board infrastructure in the aircraft, via the communication network 220, the latter being able to carry out exchanges between the aircraft. on-board infrastructure and ground infrastructure according to a means of broadband communication.
  • a communication network 220 capable of communicating between the link server 320 and the server of the company 300 may be set up according to a mobile telephone network and / or according to a wireless communication network, in particular by means of a communication network 220. the use of a VPN secure channel.
  • a ground operator connects to the aircraft from the maintenance center (mcc) on the ground.
  • link server 320 in the aircraft capable of communicating according to a mobile telephone network and according to a wireless communication network.
  • the link server 320 comprises a wireless communication module TWLU 510 ("Wireless LAN Unit" according to the English terminology) able to communicate according to for example WIFI standards a / b / g or Wimax and a mobile phone module 515 such as a GSM / GPRS or UMTS module, these two modules being connected to a triplexer module 520 connected to an antenna 525.
  • TWLU 510 Wireless LAN Unit
  • Wimax wireless local area network
  • a mobile phone module 515 such as a GSM / GPRS or UMTS module
  • an operating system 530 on which is present a router 535 able to route the communication to the TWLU 510 wireless communication module or to the triplexer 520 module directly to use the mobile phone protocol.
  • the communication of the aircraft server with the airline server is managed by a VPN module 540.
  • a firewall module 545 is installed upstream of the VPN module 540, between the data from the network server ANSU 315 and the VPN module 540 so as to protect the server 315. intrusions.
  • the figure 6 illustrates a method of establishing communication between a computer network forming at least in part the infrastructure on board an aircraft and the computer network forming at least in part the ground infrastructure of the airline, according to the invention, based on the architecture represented in figure 5 comprising wireless communication and mobile communication.
  • an ANSU server 315 and a link server 320 comprising, according to the example, a wireless communication module TWLU 510 and a mobile telephone module 515.
  • proxy server 605 (French translation of " proxy server “also called “proxy server”) type RADIUS (" Remote Authentication Dial -In User Service “according to the English terminology) adapted to receive and transmit via a 610 antenna queries and data.
  • proxy server 605 Back translation of " proxy server” also called “proxy server”
  • RADIUS Remote Authentication Dial -In User Service
  • the proxy server is a machine acting as an intermediary between the computers of a local network of the airline and a second network, the computer network of the aircraft.
  • the proxy server 605 is connected via a local area network 615 to other servers 620, 625 RADIUS. Indeed, it should be noted that the RADIUS server can act as a proxy, that is to say, to transmit the client's requests to other RADIUS servers.
  • a RADIUS server provides the link between identification requirements and a user base by transporting authentication data in a standardized manner.
  • the ANSU server 315 In order to carry out data exchanges between the aircraft server and the local network of the airline, the ANSU server 315 generates an aircraft certificate and transmits it to the wireless communication module 510 via the mobile telephone module 515 such as seen previously.
  • the wireless communication module 510 sends a request to the local network of the airline according to the protocol EAP - TLS ("Extensible Authentication Protocol - Transport Layer Security" in the English terminology) in order to exchange certificates and thus create a secure tunnel between the aircraft network and the local network of the airline.
  • This network thus created is a virtual private network.
  • the EAP - TLS protocol uses two certificates for the creation of a secure tunnel which then allows identification: a server side and a client side.
  • This protocol uses a public key infrastructure ("Public Key Infrastructure " in English terminology) to secure identification communications between customers, namely the airline's aircraft servers and RADIUS servers of the airline.
  • identification is performed, in particular by sending a request of the type DHCP ("Dynamic Host Configuration Protocol" in English terminology) to the proxy server of the local network of the airline 305 to inform it of his identity.
  • DHCP Dynamic Host Configuration Protocol
  • the figure 7 illustrates different virtual private networks capable of being created between the computer network of an aircraft and the computer network on the ground, including the network of the airline.
  • a virtual private network based on a mobile communication medium namely the GSM / GPRS or UMTS network.
  • a mobile communication medium namely the GSM / GPRS or UMTS network.
  • any type of mobile phone network can serve as a communication medium for a virtual private network according to the invention.
  • This type of virtual private network for communicating a computer network of an aircraft with a ground network is achieved in particular via a packet radio communication network provider 710 and the Internet or a private local network 715 .
  • a virtual private network based on a wireless communication medium 720, namely for example the WIFI or Wimax network, the latter being in particular the airport network.
  • This virtual private network is also realized via the Internet network or a private local network 715.
  • a virtual private network can be created between a computer network of an aircraft and a ground network when the aircraft is in flight including using a 725 satellite communication.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Computer And Data Communications (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
EP08787915.1A 2007-04-06 2008-04-04 Procédé et dispositif de maintenance dans un aéronef Active EP2135422B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0754395A FR2914803B1 (fr) 2007-04-06 2007-04-06 Procede et dispositif de maintenance dans un aeronef
PCT/FR2008/000476 WO2008139061A1 (fr) 2007-04-06 2008-04-04 Procede et dispositif de maintenance dans un aeronef

Publications (2)

Publication Number Publication Date
EP2135422A1 EP2135422A1 (fr) 2009-12-23
EP2135422B1 true EP2135422B1 (fr) 2018-01-17

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Application Number Title Priority Date Filing Date
EP08787915.1A Active EP2135422B1 (fr) 2007-04-06 2008-04-04 Procédé et dispositif de maintenance dans un aéronef

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Country Link
US (1) US9367971B2 (ja)
EP (1) EP2135422B1 (ja)
JP (2) JP2010523387A (ja)
CN (1) CN101682614A (ja)
BR (1) BRPI0809183A2 (ja)
CA (1) CA2683306C (ja)
FR (1) FR2914803B1 (ja)
RU (1) RU2475990C2 (ja)
WO (1) WO2008139061A1 (ja)

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FR2888362B1 (fr) * 2005-07-05 2007-10-12 Airbus France Sas Outil de diagnostic pour la reparation d'aeronefs et procede utilisant cet outil
US8341298B2 (en) * 2005-12-02 2012-12-25 The Boeing Company Scalable on-board open data network architecture

Also Published As

Publication number Publication date
CA2683306A1 (en) 2008-11-20
EP2135422A1 (fr) 2009-12-23
BRPI0809183A2 (pt) 2014-09-16
US9367971B2 (en) 2016-06-14
CN101682614A (zh) 2010-03-24
RU2009140981A (ru) 2011-05-20
US20100131149A1 (en) 2010-05-27
RU2475990C2 (ru) 2013-02-20
JP2014028614A (ja) 2014-02-13
JP2010523387A (ja) 2010-07-15
FR2914803A1 (fr) 2008-10-10
WO2008139061A1 (fr) 2008-11-20
FR2914803B1 (fr) 2009-09-18
CA2683306C (en) 2017-08-08

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