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Aircraft Design with Maneuver and Gust Load Alleviation
29th AIAA Applied Aerodynamics Conference, 2011of maneuver (MLA) and gust load alleviation (GLA) systems on aircraft performance are evaluated at the conceptual design level. Results suggest that a conventional transonic transport aircraft designed with an aggressive aerodynamic MLA system may achieve some 3% lower direct operating cost (DOC) and more than 4% reduction in fuel consumption relative ...
Jia Xu, Ilan Kroo
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Experimental investigation of an autonomous flap for load alleviation
56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2015This paper presents an experimental aeroservoelastic investigation of a novel load alleviation concept using trailing edge flaps. These flaps are autonomous units, which are self-powered and self-actuated, using trailing edge tabs, thereby demonstrating advantages in comparison with conventional flap systems in terms of wiring and structural ...
Lars Oliver Bernhammer +4 more
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Gust Load Alleviation by L1 Adaptive Control
Proceedings of the 2022 2nd International Conference on Control and Intelligent Robotics, 2022Ao He +3 more
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Launch Load Alleviation for Lightweight, Active Mirrors
51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 18th AIAA/ASME/AHS Adaptive Structures Conference<BR> 12th, 2010Lightweight, active, silicon carbide mirrors can increase the capability of space-based optical systems. However, launch survival is a serious concern for such systems, with the vibrations and acoustic from launch threatening to damage the optics. Therefore, this paper examines launch load alleviation techniques that may increase the probability of ...
Lucy Cohan, David Miller
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Gust Load Alleviation on a Large Transport Airplane
Journal of Aircraft, 2016This study develops an active control technology to reduce the incremental dynamic loads of a large four-engine transport airplane flying through a gust field. The mathematical model of the proposed gust-alleviation system features composite structural motions (for example, rigid-body motions, elastic vibrations, and deflections of control surfaces ...
Yonghui Zhao, Chengyu Yue, Haiyan Hu
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Hybrid adaptive control for gust load alleviation
2015 34th Chinese Control Conference (CCC), 2015This paper develops a hybrid adaptive control (HAC) framework based on fast block least mean square (FBLMS) algorithm for gust load alleviation (GLA). Currently, the GLA control system is usually focusing on the alleviation of structural vibration of aircraft caused by turbulence perturbation.
Bian Qi, Li Ting, Qin Yuemei, Peng Cheng
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On the Effect of Geometric Nonlinearities on Static Load Alleviation
50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2009This paper investigates the importance of nonlinear aeroelastic static analysis in the structural design of high aspect ratio wings. As an indicator of the importance of static nonlinearity, the root bending moment is used. A relatively accurate prediction of the bending moment of a flexible wing is important in early design stages, since it largely ...
Roeland De Breuker +2 more
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Structural Concepts for Passive Load Alleviation
AIAA SCITECH 2022 Forum, 2022Bramsiepe, Kjell +3 more
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Aeroelastic tailoring for gust load alleviation
2016Aerospace Structures & Computational ...
Lancelot, P.M.G.J. (author) +1 more
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Model predictive control for gust load alleviation
IFAC Proceedings Volumes, 2012For economical and ecological reasons aircraft are required to become more efficient by reducing fuel consumption and CO2 emissions. One way to achieve these objectives is to decrease the weight of the aircraft structure. The reduction is, however, limited by the structural requirement that the aircraft must be able to withstand the forces and stress ...
Giesseler, Hans Gerd +3 more
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