An Adjoint-based Optimization Method for Helicopter Fuselage Backdoor Geometry
Zhang, Qinyin and Lee, Jen-Der and Wendisch, Jan-Hendrik (2010) An Adjoint-based Optimization Method for Helicopter Fuselage Backdoor Geometry. 36th European Rotorcraft Forum 2010, 7.-9. Sep. 2010, Paris, Frankreich.
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For utility and transport helicopters with rear loading backdoors, the afterbody area is usually one of the largest drag contributing areas of the fuselage. For this reason, numerical simulations have been performed to assess the possibilities of fuselage drag reduction by the means of local shape modification at the afterbody region. Within this study an automatic optimization chain with gradient-based optimization technique and surface parameterization/deformation tools has been established and applied to the backdoor geometry of a modified GOAHEAD configuration. This paper will present the first numerical results of the ongoing shape optimization studies. As it turns out, local shape modification on the backdoor geometry can lead to a reduction of the separation region there and to a drag reduction of the helicopter fuselage.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||An Adjoint-based Optimization Method for Helicopter Fuselage Backdoor Geometry|
|Keywords:||Aerodynamische Formoptimierung, Reduzierung des Luftwiderstands|
|Event Title:||36th European Rotorcraft Forum 2010|
|Event Location:||Paris, Frankreich|
|Event Type:||international Conference|
|Event Dates:||7.-9. Sep. 2010|
|Organizer:||L'Association Aéronautique et Astronautique de France|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L RR - Rotorcraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L RR - Rotorcraft Research|
|DLR - Research theme (Project):||L - The Virtual Aerodynamic Rotorcraft|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Helicopters|
|Deposited By:||Qinyin Zhang|
|Deposited On:||25 Jan 2011 13:54|
|Last Modified:||25 Jan 2011 13:54|
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