TERA2020 Optimisation of NEWAC Configurations
PRESENTER: B. Lehmayr - University of StuttgartCONTRIBUTORS: K. Kyprianidis - Cranfield University, X. Lei - Chalmers University of Technology, A. Alexiou - National Technical University of Athens
Abstract
TERA2020 (Techno-economic, Environmental and Risk Assessment for 2020) for NEWAC is a software tool that spans aero engine conceptual design and preliminary design. It addresses major component design as well as system level performance for a whole aircraft application. It helps to automate part of the aero engine preliminary design process using a sophisticated explicit algorithm and a modular structure.
The second half of the TERA2020 presentation deals with new insights gained by the use of TERA2020; its results and their interpretation. In a first step, a sensitivity analysis for the NEWAC powerplants has been produced with TERA2020. Essentially, the tool was utilised to investigate the response and sensitivity of the TERA2020 integrated powerplant models to certain engine design parameters. Results were produced in the form of exchange rates for the main system descriptors: fuel burn, engine weight, production cost, engine and engine/aircraft noise, and environmental impact. These sensitivity parameters allow for system level assessment of the benefits of the researched NEWAC technologies with respect to the relevant NEWAC engine configurations (Intercooled Recuperative Core, Intercooled Core, Active Core and Flow Controlled Core). Such sensitivity studies are the basis for the application of an optimisation algorithm. TERA2020 is capable of using different parameters either as engine design parameters or as constraints. By using several user-defined performance functions, the NEWAC engines can be optimised with respect to economic considerations as well as environmental impact.
