Coordinator's Editorial - 1 August 2008

[Begleittext / Subline: Günter Wilfert ]

At programme start NEWAC has defined ambitious goals: 6% reduction in fuel burn and 16% less NOX emissions. After two years the programme has reached mid term and with the finalisation of the concept and definition phase for the new core technologies it is time to perform a detailed review.

For me personally this is also an important milestone because I am taking over a new responsibility at MTU Aero Engines and handing over the programme lead to Stephan Servaty. The NEWAC management committee was always working very closely and effectively together and always had a very good and friendly team spirit. Stephan will now take over the overall programme management and will introduce himself at the end of this editorial.

Programme reviews are performed every year but a special focus was set to the mid term review. This was organized by Italy's engine manufacturer Avio and was held in June 2008 near Naples. Since 40 million euros of the 70 million euros NEWAC overall budget are being funded by the European Union, EU Scientific Officer Daniel Chiron is assisted by three reviewers: Prof. Roman Domanski from Poland, Jean-Michel Duc from France, and Dr. Dietrich Eckardt from Switzerland. The reviewers were impressed with the current progress of the project and no less with the initial test results. No appreciable slips have so far occurred in any of the sub-programs, and the tabled interim results in part even exceed expectations. 

[Begleittext / Subline: NEWAC Management Committee during a meeting in June 2008 ]

Back: Andrew Rolt (RR, SP1 leader), Jörg Sieber (MTU, chief engineer), Günter Wilfert (MTU, NEWAC coordinator), Martin Dietz (ARTTIC, NEWAC project office) Front: Stefan Donnerhack (MTU, SP2 leader), Nick Baker (RR, SP3 leader), Salvatore Colantuoni (AVIO, SP6 leader), Armel Touyeras (SN, SP5 leader), Stephan Bock (MTU, SP4 leader

Under NEWAC, four new engine concepts are being developed. MTU's activities center on the development of active systems for the "smart compressor" and of cooling air cooling systems. The smart compressor will yield significant improvements in the high-pressure compressor's operating envelope. Air injection for active surge control and active clearance control will improve the efficiency and operating regime of the high-pressure compressor. From exhaustive preliminary testing, fuel economies around 1 percent to 1.5 percent are expected to result. Detailed investigations into active cooling air cooling also are expected to provide about 2 percent fuel savings. Innovative solutions like these are indispensable in the long run but will still take a few years to mature technologically.

In sub programme 3 (SP3) Rolls-Royce is working on an “Intercooled Core” that with the aid of higher pressure ratios is hoped to cut specific fuel consumption by about 3 percent. The target is supported by heat exchanger installation design studies and initial test results on intercooler ducting.  In SP5 the first model tests with tip flow control technologies, aspiration and rub management also substantiated the expectation to cut fuel burn by about 3 % for the Snecma “Flow Controlled Core”. In SP2 the detailed CFD investigations have confirmed the expected improvements for the exploitation of the core exhaust flow and the high efficient radial compressor for the “Intercooled Recuperative Core”. In SP6 three novel combustors are being developed for the various core engine concepts by the Avio led team including Rolls-Royce Deutschland and Turbomeca. First results from new injection systems indicate that the targeted 16 percent reduction in oxides of nitrogen emission could become a reality. .

With the very positive overall assessment of the mid term review the NEWAC team was sent off into the hot phase of the project. Over ten large tests will be set up to confirm the envisaged solutions for achieving the highly ambitious goals. With the rising price of fuel and the broadening environmental discussion the outcome of the NEWAC project is urgently needed for the input to the next generation of engines.


Günter Wilfert

Just a few days ago I have taken over the NEWAC programme management from Günter Wilfert. Some of you will know me since I have been coordinating MTU’s European Level-1 research projects for some ten years. Besides I have been working on a few national research programmes as well.

Concerning NEWAC, I have already learnt about the great team spirit that led to outstanding results after only half the project’s duration and gave rise to the high appreciation expressed by the Commission Services and the NEWAC reviewers after the mid-term meeting. Thus, the aspiration level for our future work is high. I will try to comply with these expectations and I am confident that with this team of highly qualified and engaged experts we will succeed.


Stephan Servaty

[Begleittext / Subline: Stephan Servaty (MTU), new NEWAC Coordinator ]