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Development and validation of a next-generation conceptual aero-structural sizing suite

Development and validation of a next-generation conceptual aero-structural sizing suite
Development and validation of a next-generation conceptual aero-structural sizing suite
An overview of a novel variable-fidelity aerostructural computational suite targeted for prediction at the conceptual design phase is presented herein. The computational suite consists of two primary modules known as CADac (Computer Aided Design Aircraft) and NeoCASS (Next generation Conceptual Aero-Structural Sizing Suite). The methodology is based upon the integration of geometry construction, aerodynamic and structural analysis codes that combine depictive, computational, analytical, and semiempirical methods, validated in an aircraft design environment. The aerodynamics sub-space is analyzed using methods based upon a Vortex-Lattice Method used to examine large structural deformations, a Doublet Lattice Method in order to predict flutter boundaries in the subsonic speed regime, and, an Euler based method to cater for identification of flutter points in the transonic regime. A quasi-analytical method that provides accurate weights estimation and refined prediction of airframe moments of inertia data has also been introduced, thus facilitating a more comprehensive investigation of the quasi-static aeroelastic problem. To illustrate the new computational system capabilities, the methodology was applied to a complete flexible structural model of the B747-100 transport aircraft. The quasianalytical weight prediction of the NeoCASS suite was found to generate an accuracy of less than 0.5% error compared to published results.
conceptual design, aeroelasticity, computer aided design, computational fluid dynamics
0-9533991-9-2
Bérard, A.
9ffd5c55-945d-4c37-88be-e864f16c908a
Cavagna, L.
4efe830e-23cf-4532-a218-1fdeb46c53ef
Da Ronch, A.
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Riccobene, L.
f78c92b2-b5f5-4538-bd36-1286eaa4ee41
Ricci, S.
4c1b0ccc-bce4-4709-a81c-df703caec186
Isikveren, A.
ee04e646-a95f-4e8e-bd8e-2a9169932b46
Bérard, A.
9ffd5c55-945d-4c37-88be-e864f16c908a
Cavagna, L.
4efe830e-23cf-4532-a218-1fdeb46c53ef
Da Ronch, A.
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Riccobene, L.
f78c92b2-b5f5-4538-bd36-1286eaa4ee41
Ricci, S.
4c1b0ccc-bce4-4709-a81c-df703caec186
Isikveren, A.
ee04e646-a95f-4e8e-bd8e-2a9169932b46

Bérard, A., Cavagna, L., Da Ronch, A., Riccobene, L., Ricci, S. and Isikveren, A. (2008) Development and validation of a next-generation conceptual aero-structural sizing suite. 26th Congress of the International Council of the Aeronautical Sciences, United States. 14 - 17 Sep 2008.

Record type: Conference or Workshop Item (Paper)

Abstract

An overview of a novel variable-fidelity aerostructural computational suite targeted for prediction at the conceptual design phase is presented herein. The computational suite consists of two primary modules known as CADac (Computer Aided Design Aircraft) and NeoCASS (Next generation Conceptual Aero-Structural Sizing Suite). The methodology is based upon the integration of geometry construction, aerodynamic and structural analysis codes that combine depictive, computational, analytical, and semiempirical methods, validated in an aircraft design environment. The aerodynamics sub-space is analyzed using methods based upon a Vortex-Lattice Method used to examine large structural deformations, a Doublet Lattice Method in order to predict flutter boundaries in the subsonic speed regime, and, an Euler based method to cater for identification of flutter points in the transonic regime. A quasi-analytical method that provides accurate weights estimation and refined prediction of airframe moments of inertia data has also been introduced, thus facilitating a more comprehensive investigation of the quasi-static aeroelastic problem. To illustrate the new computational system capabilities, the methodology was applied to a complete flexible structural model of the B747-100 transport aircraft. The quasianalytical weight prediction of the NeoCASS suite was found to generate an accuracy of less than 0.5% error compared to published results.

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More information

Published date: September 2008
Venue - Dates: 26th Congress of the International Council of the Aeronautical Sciences, United States, 2008-09-14 - 2008-09-17
Keywords: conceptual design, aeroelasticity, computer aided design, computational fluid dynamics
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 351731
URI: https://eprints.soton.ac.uk/id/eprint/351731
ISBN: 0-9533991-9-2
PURE UUID: d47cad26-4af7-46ba-b9d6-e9a28730ff9f

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Date deposited: 30 Apr 2013 14:08
Last modified: 18 Jul 2017 04:24

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