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An overview of DLR compound rotorcraft aerodynamics and aeroacoustics activities within the CleanSky2 NACOR Project

Wentrup, Marc and Yin, Jianping and Kunze, Philipp and Streit, Thomas and Wendisch, Jan-Hendrik and Schwarz, Thorsten and Pinacho, Jean-Paul and Kicker, Klaus and Fukari, Raphael (2018) An overview of DLR compound rotorcraft aerodynamics and aeroacoustics activities within the CleanSky2 NACOR Project. In: AHS Forum 2018. AHS Forum, 14-17.May 2018, Phoenix, Arizona.

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Official URL: https://eventegg.com/ahs-forum/

Abstract

The challenge of increasing range and speed of a rotorcraft is encountered in the scope of the European CleanSky2 “Fast Rotorcraft” project by Airbus Helicopters with the compound helicopter design RACER (RapidAndCostEfficientRotorcraft) for which the box wing and the tail parts designs are respectively protected by patent. This paper presents the DLR contributions to the RACER development. This includes the aerodynamic design of the wing and tail section as well as an overall assessment of performance and noise. In a first step the aerodynamic properties of the configuration are evaluated both isolated and with consideration of the main rotor and lateral rotor interferences by the use of actuator discs. In the second step, the investigated possibilities to improve the configurations performance are described. These include airfoil design for improved high lift performance of the wing and tail section, an optimization of the box wing circulation distribution on the upper and lower wing. Additionally, the intersection fairings were improved and the efficiency of the trim flaps was evaluated. In this regard, it could be determined for which cases an isolated approach is appropriate and when the rotor interference should be considered. At the end the evaluation of the aero acoustics of the configuration is conducted. The applied configuration shows good aerodynamic characteristics with some further cruise and off design optimization potential.

Item URL in elib:https://elib.dlr.de/123744/
Document Type:Conference or Workshop Item (Speech)
Title:An overview of DLR compound rotorcraft aerodynamics and aeroacoustics activities within the CleanSky2 NACOR Project
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wentrup, Marcmarc.wentrup (at) dlr.deUNSPECIFIED
Yin, JianpingJianping.Yin (at) dlr.deUNSPECIFIED
Kunze, PhilippPhilipp.Kunze (at) dlr.deUNSPECIFIED
Streit, Thomasth.streit (at) dlr.deUNSPECIFIED
Wendisch, Jan-HendrikJan-Hendrik.Wendisch (at) dlr.deUNSPECIFIED
Schwarz, ThorstenThorsten.Schwarz (at) dlr.dehttps://orcid.org/0000-0003-1034-6120
Pinacho, Jean-PaulJean-Paul.Pinacho (at) airbus.comUNSPECIFIED
Kicker, KlausKlaus.Kicker (at) airbus.comUNSPECIFIED
Fukari, RaphaelRaphael.Fukari (at) airbus.comUNSPECIFIED
Date:May 2018
Journal or Publication Title:AHS Forum 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CleanSky2, NACOR, RACER, compound helicopter, compound rotorcraft
Event Title:AHS Forum
Event Location:Phoenix, Arizona
Event Type:international Conference
Event Dates:14-17.May 2018
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 for Aerodynamics and Flow Technology > Helicopter, BS
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Wentrup, Marc
Deposited On:12 Dec 2018 10:01
Last Modified:31 Jul 2019 20:21

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