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Transonic Flutter Calculations for the AMP Wind Tunnel Model with Engine Pylons and Nacelles

Fick, Peter (2007) Transonic Flutter Calculations for the AMP Wind Tunnel Model with Engine Pylons and Nacelles. DLR-Interner Bericht. DLR IB 232-2007 J 01, 135 S.

Full text not available from this repository.

Abstract

In order to investigate aeroelastic aspects of engine/airframe integration, a simulation chain is set up capable of conducting high-fidelity transonic flutter calculations for aircraft configurations with engine pylons and nacelles. For that purpose, a combination of several software systems is used: DLR’s unstructured TAU code for steady RANS calculations, the Transonic Doublet Lattice Method (TDLM) for unsteady linearized potential flow computations, and a p-k flutter solver for frequency domain flutter analysis. The computational approach is demonstrated for the AMP wind tunnel model. Flutter boundaries are presented and validated with experiment for three different configurations, and are compared to investigate the influence of the inclusion of engine pylons and nacelles onto the predicted flutter boundary. It is shown that the inertial contribution from the engine masses has a significant destabilizing effect. Inclusion of the unsteady nacelle airloads is shown to lead to a further reduction of the flutter stability.

Item URL in elib:https://elib.dlr.de/48069/
Document Type:Monograph (DLR-Interner Bericht)
Title:Transonic Flutter Calculations for the AMP Wind Tunnel Model with Engine Pylons and Nacelles
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fick, PeterUNSPECIFIEDUNSPECIFIED
Date:2007
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:135
Status:Published
Keywords:flutter, aeroelasticity, engine/airframe integration, WNP interference, unsteady transonic aerodynamics, TDLM
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:12 Jun 2007
Last Modified:27 Apr 2009 13:42

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