21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-5.6.1

ENGINE INTEGRATION ON FUTURE TRANSPORT AIRCRAFT - THE EUROPEAN RESEARCH PROGRAMMES DUPRIN/ENIFAIR

Burgsmueller W., Rollin C.*, Rossow C.**
DaimlerˇBenz Aerospace Airbus GmbH, Germany; *Aerospatiale, France; **DLR, Braunschweig, Germany

Keywords: engine integration, future transport aircraft, the european research programmes, duprin / enifair

The current development of engines with Veryresp. Ultra-High Bypass-Ratios (VHBR/UHBR) offers the opportunity to reduce fuel consumption, emissions and noise. The increasing diameter of these engines however requires a closer coupling with the wing. On this background the CEC-funded program DUPRIN I was started in 1990, followed by phase 2 and the current program ENIFAIR in order to investigate the effects on overall aerodynamic performance. For engine simulation in the wind tunnel turbine powered simulators (TPS) were used, representing different types of engines like turbofan, UHBR and the recently developed VHBR. Low-speed tests on a twin-engine transport aircraft model with turbofan resp. UHBR simulators were done in DNW, VHBR investigations are under preparation. New types of thrust reversers are under development for the VHBR engine, covering hybrid door cascade and hollow door concepts. High speed tests in ONERA S1 are under preparation. Here the model will be split into a half model. The numerical work is currently concentrating on application and validation of different Navier Stokes codes. The paper describes the main contents of the programs and the results, currently available.

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