Aircraft oems racing to catch up with health-monitoring solutions mro network electricity pictures


Aircraft and engine health-monitoring solutions are at the heart of predictive maintenance and the “on-condition” maintenance model. Knowing when a part is likely to fail, or when degradation in its performance will affect the life of another component, allows engineers to perform corrective actions that avoid costlier and time-consuming work later on.

Although predictive maintenance is a relatively modern trend, to some extent health monitoring always has been performed, for instance, with quick visual checks at a gate or more detailed borescope inspections in the hangar. chapter 7 electricity test However, big advances in the gathering and analysis of sensor data have transformed the practice, allowing many more operating parameters to be assessed and giving support teams the ability to check live inflight data.

“Boeing’s data scientists, analytics professionals and Boeing’s own engineering-services teams are partnering to develop more algorithms and the technology platforms that effectively handle big data of all varieties as the world of technology evolves,” says Dawen Nozdryn-Plotnicki, the company’s director of advanced analytics for digital aviation and analytics.

Airman users can access real-time information and recommendations via a web portal for Airbus aircraft equipped with an onboard maintenance system and air-to-ground communications such as the aircraft communications addressing and reporting system or air traffic services unit. electricity and magnetism quiz questions The core module of “Airman-web” monitors aircraft events, including systems, while an optional module connects to the maintenance information system and allows aircraft data requests.

Another use for the data, which overlaps with predictive maintenance, is to create optimal maintenance programs. Rather than conduct heavy checks strictly according to the standard maintenance planning document, airlines can use service-history data to create a workscope that better fits their needs and allows for more efficient shop visits and better-timed heavy-check intervals.

In the 1990s, Rolls-Royce started working data-based predictive maintenance into its TotalCare support packages. Since then, the amount of engine data transmitted before and after each flight has rocketed from kilobytes to terabytes, while machine learning and artificial intelligence have allowed new ways of analyzing it. z gas el salvador numero de telefono As a result, the OEM says its health-monitoring solutions now affect 70% of an airline’s direct operating costs, up from 4% when they were introduced. origin electricity faults This is because health monitoring now improves aircraft availability and efficiency rather than just reducing engine maintenance costs.

“Our latest EHM [engine health-monitoring] systems can reach parts we haven’t reached before and deliver much greater detail on request,” explains Axel Voege, Rolls’ head of digital operations for Germany. “We can now monitor line-replaceable units, such as variable-stator vane actuators and sensors—small parts but still crucial to making sure our engines are ready and available for flight—and predict when they need replacement rather than respond to their failure.”

Although OEMs such as Rolls continuously expand their health-monitoring capabilities, MRO provider Lufthansa Technik believes there are limitations to the interpretation of data provided by the manufacturers’ systems. Often, Lufthansa Technik notes, this is because alert rules are not customized to the peculiarities and specifics of an operator’s fleet. gas water heater reviews 2013 As a result, after following overhauls to OEMs’ recommendations, post-overhaul engine performance can fall short of targets, with big differences even among engines of the same build and vintage.

To solve this, Lufthansa Technik developed its own health-monitoring tool and created models that adapted general thermodynamic equations to specific engine data actually recorded in the test cell. The next step was to create a “digital twin” of an engine by scanning and measuring all its constituent parts and feeding the results into a computer. electricity estimated bills OEMs also have pursued the digital-twin concept, but Lufthansa Technik says its health-modeling tool goes further by evaluating a larger data set.

The engine control unit, for example, transmits status bits that signal the condition of different subsystems such as those that measure exhaust gas temperatures. In the event of an error in the measurement section, this is a critical piece of information. Usually, these status bits remain unused even though they are available in the raw data, but Lufthansa Technik’s tool accounts for them and can generate alerts on that basis.

The reach and utility of health monitoring clearly will continue to grow and in several different directions. Smaller, more robust sensors should allow “plug-and-play” solutions where operators can choose to slot new sensor types into their engines with minimal fuss. There will be more interaction with onboard units, so support teams can remotely request specific parameters both in flight and on the ground. And new software and algorithms will be used in analyzing more data and combining it in different ways to improve forecasting ability.

The potential for combining different data inputs is enormous, with Rolls already providing an example on the A350’s Trent XWB. As with other engines, turbine gas-temperature (TGT) readings are a common impetus for servicing. However, humidity also plays a role and can make an engine appear to need maintenance earlier than is necessary. gas weed strain Using coding apps within the Microsoft Azure cloud (Rolls collaborates with Microsoft to improve the former’s digital services), the OEM’s health-monitoring technology can access humidity data for every airport served by the Trent XWB and adjust for the effect on TGT readings.

In 2019, Airbus plans to release Skywise Health Monitoring, which will be designed to leverage the big data collected through Airbus’ Skywise open data platform to help airlines manage unscheduled maintenance more efficiently. Detailed information about the new service is sparse, but Airbus says it will facilitate rapid troubleshooting and offer additional functions such as prioritizing corrective actions.

Airbus points out durability and reliability are critical when it comes to structural sensors. “New-generation sensors are coming on the market which could replace traditional non-destructive inspection equipment used for specific maintenance tasks, and Airbus is continuously evaluating possible use cases on both metallic and composite structures,” adds Baker.