Print Email Facebook Twitter System noise assessment of an aircraft with coanda flaps Title System noise assessment of an aircraft with coanda flaps Author Blinstrub, J. (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)) Heinze, W (Technical University of Braunschweig) Bertsch, E.L. (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)) Simons, D.G. (TU Delft Aircraft Noise and Climate Effects) Snellen, M. (TU Delft Aircraft Noise and Climate Effects) Date 2016 Abstract An innovative aircraft design of the Collaborative Research Centre (SFB) 880 features a new active high-lift system. This high-lift system is comprised of a droop-nose leading edge device and a Coanda flap as the trailing edge device. It offers very high lift coefficients and thus the ability to operate at airports that have reduced runway lengths, such as regional airports. Consequently, the assessment of aircraft noise is of utmost importance. The overall system noise on the ground is predicted using a parametric aircraft noise prediction tool. Although a parametric noise source model for the Coanda flap does not exist, it is estimated with a conventional Fowler flap model to evaluate the qualitative noise reduction potentials. The new design is compared with a regular aircraft that is equipped with a conventional high-lift system. Both designs are tested on individually calculated continuous decent approaches. The results show that airframe noise of the new aircraft is decreased due to later flap deflection and reduced speed. The engine noise, however, is significantly increased, especially on the glide slope. Hence, it dominates the overall noise on the ground, eliminating the benefits of the airframe noise reduction in the proximity of the airport. It is shown that the noise reduction potentials can only be exploited if the approach trajectory is individually optimized for low-noise. Subject Aircraft noise predictionaircraft designCoanda flapPANAM To reference this document use: http://resolver.tudelft.nl/uuid:0d8665b5-f40a-4682-8ed9-f9be8b02e9b7 Source READ 2016: Warsaw, Poland Event READ 2016, 2016-09-12 → 2016-09-14, Warsaw, Poland Part of collection Institutional Repository Document type conference paper Rights © 2016 J. Blinstrub, W Heinze, E.L. Bertsch, D.G. Simons, M. Snellen Files PDF READ_vFINAL.pdf 1.44 MB Close viewer /islandora/object/uuid:0d8665b5-f40a-4682-8ed9-f9be8b02e9b7/datastream/OBJ/view