Implementation of active and passive loads alleviation methods on a generic mid-range aircraft configuration

Handojo, V.H.; Lancelot, P.M.G.J.; De Breuker, R.

doi:10.2514/6.2018-3573

Implementation of active and passive loads alleviation methods on a generic mid-range aircraft configuration

Title

Implementation of active and passive loads alleviation methods on a generic mid-range aircraft configuration

Author

Handojo, V.H. (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR))
Lancelot, P.M.G.J. (TU Delft Aerospace Structures & Computational Mechanics)
De Breuker, R. (TU Delft Aerospace Structures & Computational Mechanics)

Date

2018-01-01

Abstract

Loads analysis and structural design are core steps of the aircraft design process. To reduce wing loads and with it the wing structural mass, methods of passive and active loads alleviation have been researched in recent years. However, those methods are currently implemented without the consideration of dynamic simulations or unsteady aerodynamics in the optimization process in aircraft predesign. The purpose of this research is to investigate the influence of passive and active loads alleviation methods on the structural mass in aircraft preliminary design. The methods have been applied on the wing of a Generic Mid-Range (GMR) aircraft configuration. The models have been created with ModGen, an in-house program at DLR Institute of Aeroelasticity. The models comprise FE-models for the structure and masses, as well as DLM (Doublet-Lattice-Method) model for the aerodynamics. For the investigation of the influence of the loads alleviation systems, a loop of loads analysis and subsequent structure optimization has been conducted. The loads analysis consists of gust and maneuver simulations. For the passive loads alleviation, an aeroelastic tailoring of the wing structure has been implemented, whereas for the active loads alleviation the ailerons are deflected to redistribute lift during maneuvers and to partially compensate lift increment during gust encounters. With the implemented methods, a first quantification of the influence of loads alleviation methods on the structural mass in aircraft predesign is possible.

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http://resolver.tudelft.nl/uuid:c3d1134e-337c-43c5-a8be-493f7bcb0066

DOI

https://doi.org/10.2514/6.2018-3573

Publisher

American Institute of Aeronautics and Astronautics Inc. (AIAA)

Embargo date

2019-07-01

ISBN

9781624105500

Source

2018 Multidisciplinary Analysis and Optimization Conference