Results 21 to 30 of about 692 (185)
Nonlinear Folding Wing Tips for Gust Loads Alleviation [PDF]
Journal of Aircraft, 2015 A recent consideration in aircraft design is the use of folding wing tips with the aim of enabling higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations. This study builds on previous work investigating the effect of exploiting folding wing tips in-flight as a device to reduce dynamic gust loads, but now with ...
Castrichini, Andrea +5 more
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Testing of a Hinged Wingtip Device for Gust Loads Alleviation [PDF]
Journal of Aircraft, 2018 Recent aircraft designs have considered higher-aspect-ratio wings to reduce induced drag for improved fuel efficiency; however, to remain compliant with airport gate requirements, folding wingtips ...
Cheung, Ronald +3 more
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Allocation of distributed flaps for gust load alleviation [PDF]
2017 IEEE Conference on Control Technology and Applications (CCTA), 2017 Increasing the number and functionality of control surfaces provides great potential to improve aircraft performance. This, however, complicates the design of the control allocation system commonly used for flight control. A novel method for linear control allocation is presented which allows considering an arbitrary number of frequency dependent ...
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Gust Loads Alleviation Using Sloshing Fuel
AIAA Scitech 2021 Forum, 2021 There is much interest in developing concepts to reduce in-flight loads resulting from gusts and atmospheric turbulence, as this will lead to lighter aircraft with improved fuel performance and reduced environmental impact. Recent work has considered using sloshing in tanks as a means to increase the effective structural damping in the wings ...
De Courcy, Joe +4 more
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Microtab dynamic modelling for wind turbine blade load rejection [PDF]
, 2014 A dynamic model characterising the effect of microtab deployment on the aerodynamics of its base aerofoil is presented. The developed model predicts the transient aerodynamic coefficients consistent with the experimental and computational data reported ...
Busawon, Krishna +2 more
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Remote Sensing, 2022 We report on the development of a novel direct-detection Doppler wind lidar (DD-DWL) within the strong requirements of an aeronautic feed-forward control application for gust load alleviation (GLA).
Patrick Vrancken, Jonas Herbst
doaj +1 more source
Predictive Control for Alleviation of Gust Loads on Very Flexible Aircraft [PDF]
, 2014 11/03/14 meb. Author retains copyright as beforeIn this work the dynamics of very flexible aircraft are described by a set of non-linear, multi-disciplinary equations of motion.
Palacios, Rafael +11 more
core +1 more source
Aerospace, 2023 SensorCraft is an intelligence, surveillance, and reconnaissance (ISR) system that integrates unmanned flight platforms and airborne antenna arrays. Under gust loads, the high–aspect–ratio, light–wing structure of SensorCraft has considerable bending and
Shuai Hao +5 more
doaj +1 more source
An adaptive aeroelastic control approach using non linear reduced order models [PDF]
, 2014 A systematic approach to the model order reduction of high fidelity coupled fluid/structure/flight dynamics models and the subsequent control design is described. It uses information on the eigenspectrum of the coupled-system Jacobian matrix and projects
Palacios, R. +13 more
core +1 more source
Gust Alleviation of a Large Aircraft with a Passive Twist Wingtip
Aerospace, 2015 This paper presents an investigation into the gust response and wing structure load alleviation of a 200-seater aircraft by employing a passive twist wingtip (PTWT). The research was divided into three stages. The first stage was the design and analysis
Shijun Guo +2 more
doaj +1 more source