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Advanced rotorcraft aeromechanics studies in the French-German SHANEL project

Costes, Michel and Raddatz, Jochen and Borie, Sylvie and Sudre, Laurent and D'Alascio, Alessandro and Embacher, Martin and Spiegel, Pierre, Pierre (2009) Advanced rotorcraft aeromechanics studies in the French-German SHANEL project. 35th European Rotorcraft Forum, 22.-25. Sep. 2009, Hamburg, Deutschland.

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Abstract

The present paper gives an overview of the SHANEL research project (partly supported by the French DGAC and the German BMWA) which was started at the end of 2006 between the German and French Aerospace Research Centres DLR and ONERA, the University of Stuttgart and the two national helicopter manufacturers, Eurocopter and Eurocopter Germany. This program represents the continuation of the binational CHANCE project, involving the same partners. The objective of the project is to enhance and further validate the CFD tools: the structured multi-block elsA software of Onera and the unstructured TAU code of DLR, for computing the aerodynamics of the complete trimmed helicopter, accounting for the blade elasticity by coupling with blade dynamics and structural mechanics tools. A coupling activity between the FLOWer code of DLR and the HOST tool of Eurocopter is also completed to achieve the free flight trim of a complete helicopter. In this program particular attention is being given to wake conservation, to the modelling of elaborated complex shapes such as rotor hubs and consequently to interactional phenomena, with the global objective of improving the prediction of helicopter performance and noise. Rotorcraft noise prediction chains were rationalized, enhanced and compared. The validation activity of the flow solvers elsA and TAU is progressing from the CHANCE results and is now focussing on more complex problems such as the simulation of a rotating rotor head mounted on its fuselage, of a complete helicopter in steady mode through the use of actuator discs and engine boundary conditions, the time-accurate simulation of a complete trimmed helicopter in forward-flight, and the numerical simulation of Blade Vortex Interactions. All along the research program the updated versions of the CFD and acoustic codes are systematically delivered to industry. This approach, also followed during the former CHANCE project, is chosen to speed up the transfer of capabilities to industry and check early enough that the products meet the expectations for applicability in the industrial environment of Eurocopter.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Advanced rotorcraft aeromechanics studies in the French-German SHANEL project
Authors:
AuthorsInstitution or Email of Authors
Costes, MichelONERA
Raddatz, JochenDLR
Borie, SylvieEurocopter SaS
Sudre, LaurentEurocopter SaS
D'Alascio, AlessandroEurocopter Deutschland
Embacher, MartinIAG, Universität Stuttgart
Spiegel, Pierre, PierreDLR
Date:September 2009
Status:Published
Keywords:helicopter, SHANEL, CHANCE, CFD, elsA, TAU, FLOWer, HOST, rotorcraft aerodynamics, blade elasticity, trimmed helicopter, time-accurate simulation, blade vortex interactions, actuator disc, rotor head
Event Title:35th European Rotorcraft Forum
Event Location:Hamburg, Deutschland
Event Type:international Conference
Event Dates:22.-25. Sep. 2009
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Jochen Raddatz
Deposited On:05 Jan 2010 10:15
Last Modified:12 Dec 2013 20:44

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