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NACELLE STRAKE DESIGN FOR A SHORT TAKE-OFF AND LANDING CONFIGURATION WITH TURBOPROPS

Keller, Dennis and Rudnik, Ralf and Hasan, Yasim (2016) NACELLE STRAKE DESIGN FOR A SHORT TAKE-OFF AND LANDING CONFIGURATION WITH TURBOPROPS. European Congress on Computational Methods in Applied Sciences and Engineering 2016, 5-10 Juni 2016, Hersonissos, Greece.

Full text not available from this repository.

Abstract

The scope of the presentation is to discuss the integration effects of turboprop nacelles on a high-lift wing with an internally blowing plain flap system with Reynolds-Averaged-Navier-Stokes computations. It is shown that the resulting nacelle vortices can significantly reduce the maximum angle of attack and maximum lift coefficient at zero thrust conditions. In order to limit the negative impact, an inboard nacelle strake was designed with the aim of maximizing the lift coefficient of the landing configuration at zero thrust. To reach this goal, a sensitivity study on basic geometric strake parameters was carried out. The best nacelle strake is able to improve the maximum lift coefficient by 17 lift counts and the maximum angle of attack by three degrees. The study also revealed further potential of improvement due to an outboard strake. Using an outboard strake, which is not properly designed but simply mirrored from the inboard one leads to an additional improvement of 13 lift counts and 4 degrees in maximum angle of attack. Furthermore, it is shown that the installation of an inboard strake does not negatively impact the high-lift performance at a moderate thrust level.

Item URL in elib:https://elib.dlr.de/108082/
Document Type:Conference or Workshop Item (Speech)
Title:NACELLE STRAKE DESIGN FOR A SHORT TAKE-OFF AND LANDING CONFIGURATION WITH TURBOPROPS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Keller, DennisDennis.Keller (at) dlr.dehttps://orcid.org/0000-0002-1471-9433
Rudnik, RalfRalf.Rudnik (at) dlr.deUNSPECIFIED
Hasan, YasimYasim.Hasan (at) dlr.deUNSPECIFIED
Date:June 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aerodynamics, Engine Integration, Propeller, CFD, High-Lift, Active Flow Control, Circulation Control
Event Title:European Congress on Computational Methods in Applied Sciences and Engineering 2016
Event Location:Hersonissos, Greece
Event Type:international Conference
Event Dates:5-10 Juni 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Keller, Dennis
Deposited On:29 Nov 2016 10:54
Last Modified:29 Nov 2016 10:54

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