Improved Design Processes for an Increasingly Demanding Industry
Expected performances for modern aircraft engines have been steadily increasing. Because fuel costs are still one of the largest expenses for airlines, significant fuel efficiency improvements are required for new engine programs. In parallel, rising environmental concerns lead to new, more stringent regulations in terms of noise and gas emissions for new turbomachines.
Current market needs are pushing the aerospace propulsion industry to scale their production lines efficiently. Airline customers are facing reduced margins; new engines need not only better performance, but also to demonstrate improved maintainability, to increase their time-on-wing, and reduced development cycle cost.
Designing turbomachines for maximum performance, while verifying off-design operability and satisfying current regulations, is a multidisciplinary effort involving aerodynamic, structural, acoustic and thermal considerations. Propulsion manufacturers are scrutinizing all aspects of the engine lifecycle to support the aggressive cost reduction objectives expected by the market. This, in turn, is driving manufacturers to transform their development processes and engineering software tools.
The capability to perform multiphysics analyses through all stages of the engineering design cycle is, therefore, of paramount necessity. The Dassault Systèmes SIMULIA portfolio offers aerodynamic, acoustic, thermal, and structural simulation capabilities with the superior connectivity of the 3DEXPERIENCE platform. Our portfolio enables engine makers to make informed design decisions, optimize engine performance, increase certification confidence and compress their development timelines.
Although the primary focus for engine makers is performance, engine noise has been reduced for each new engine generation. In the light of many institutions like NASA, ACARE and ICAO noise disturbance will need to be further reduced to limit impact of flights on the community. As main contributors of flight noise, engine makers need to identify countermeasures to fan and jet noise to reach the ambitious target set for the future.
Dassault Systèmes and the SIMULIA brand offer a unique software package to simulate aerodynamic noise generated in the bypass area. A detailed digital model of the engine enables the generation of accurate tonal predictions, as well as all interactions leading to broadband noise, in a single simulation. The following video highlights the typical analysis and insights gained using our engine noise workflow.
Engine interact with the aircraft as system of system. Areas like Pylon, Nacelle and thrust reverser have impact on both entities. Solving integration issues is a complex task due to the shared responsibilities as well as the size and complexity of the model necessary. Furthermore measurement come very late in the development and are usually part of the flight tests.
Dassault Systèmes and the SIMULIA brand offer a full set of capabilities to identify potential issues earlier and reduce costly late stage redesign activities. Current capabilities enable analysis of cross wind influence simulation, pylon design and performance and jet/high lift interaction. The featured video summarizes a case study on a thrust reverser leveraging high fidelity flow simulation capability.
Through the service life of an engine it is likely that it will be hit by a lightning strike once. Simulating such high intensity events and dimensioning accordingly the parts guaranteeing the security of the travellers is necessary to get an engine certified. Dassault Systèmes solution CST covers all spectrum of industrial application to help adjusting your design for electromagnetic events.