Global air traffic is forecast to grow at an average annual rate of around 5% in the next 20 years. This high level of growth makes the need to address the environmental penalties of air traffic all the more urgent. As a result, Europes aviation industry faces a massive challenge to satisfy this demand for increased air travel in an economic and safe way. Therefore, alternative engine configurations need to be researched in order to find a significant and permanent reduction of pollution.

NEWAC is a new European-level programme, under the leadership of MTU Aero Engines, in which major European engine manufacturers, assisted by universities, research institutes and enterprises 40 partners in all - focus on new core engine concepts. NEWAC will develop and validate novel core engine technologies to further close the gap between the current emissions and the ACARE targets. NEWAC is a 71 million Euro programme of which 40 million Euro is funded by the EC.

Four core concepts will be investigated:

  • Intercooled Recuperative Core (SP 2) for the intercooled recuperative aero engine concept (IRA) operated at low OPR and using a LP(P) combustor concept (SP 6)
  • Intercooled Core (SP 3) for a high OPR engine concept based on a 3 shaft direct drive turbo fan (DDTF) with a LDI combustor (SP 6)
  • Active Core (SP 4) with active systems applicable for a geared turbo fan (GTF) using a PERM combustor (SP 6)
  • Flow Controlled Core (SP 5) for the counter rotating turbo fan (CRTF) using a PERM or a LDI combustor (SP 6)

The main NEWAC result will be fully validated novel technologies enabling a 6% reduction in CO2 emissions (Fig. 1)  and a further 16% reduction in NOX (Fig. 2).

Fig. 1: Target for CO2 reduction

Fig. 2: Target for NOx reduction

All new configurations investigated in NEWAC will be specified in detail, compared, assessed and ranked regarding their benefits and contributions to the global project targets (SP 1). As a result, NEWAC will identify the technology routes to environmentally friendly and economic propulsion solutions. The developed components will further result in optimised engine designs based on the NEWAC technologies but also in combination with the results of the EEFAE, SILENCER and VITAL programmes.