Results 21 to 30 of about 180,865 (340)
Comment améliorer l’enseignement et les apprentissages ?
Revue Internationale d’Éducation de Sèvres, 2006 From a survey conducted in the United-Kingdom, the author shows how the Student Voice movement has developed in schools and has allowed to understand students and the way they learn in a more subtle and refined way.
Julia Flutter
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Buildings, 2022 In order to study the relationship between an aerostatic three-component coefficient (ATCC) and bridge flutter and to quickly evaluate the flutter performance of bridges, we proposed a method based on the empirical formula of the ATCC.
Hui Gao +4 more
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Robust Modal Damping Control for Active Flutter Suppression
Journal of Guidance Control and Dynamics, 2020 Flutter is an unstable oscillation caused by the interaction of aerodynamics and structural dynamics.
J. Theis, H. Pfifer, P. Seiler
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Suppression of Bridge Flutter Using Suction Control
Advances in Civil Engineering, 2021 To verify the effectiveness of the suction-based method for improving flutter stability of long-span bridges, the forced vibration experiments for extracting the flutter derivatives of a section model with and without suction were performed, and the ...
Shibo Tao
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Stall Flutter Control of a Smart Blade Section Undergoing Asymmetric Limit Oscillations
Shock and Vibration, 2016 Stall flutter is an aeroelastic phenomenon resulting in unwanted oscillatory loads on the blade, such as wind turbine blade, helicopter rotor blade, and other flexible wing blades.
Nailu Li +4 more
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The Effect of Laminated Layers on the Flutter Speed of Composite Wing
Journal of Engineering, 2023 The paper presents an investigation to the flutter speed of composite wing for different ply orientation. Structurally the composite wing was idealized as a composite beam load carrying structure. Theodorsen’s expression was used to get the 2- dimension
Ahmed Abd Al-Hussain Ali +1 more
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Flutter speed estimation using presented differential quadrature method formulation
Engineering Applications of Computational Fluid Mechanics, 2019 In this paper the flutter behavior of a typical wing is investigated. The study is performed by presented Deferential Quadrature Method (DQM). The aerodynamic part adopted Wagner functions to model subsonic regime.
Mohammad Ghalandari +3 more
semanticscholar +1 more source
Flutter Regularity of Flying Wing Configuration with All-Moving Wing Tip
气体物理, 2023 The performance requirements of modern fighters meet multiple targets such as high speed, high mobility, stealth, lightweight and so on. The aircraft with a tailless flying wing configuration has the advantages of high aerodynamic efficiency, good ...
Wei-ji WANG +4 more
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European Heart Journal, 2018 Aims Risks of catheter ablation for atrial fibrillation and flutter assessed in retrospective studies, registries, and controlled trials may underestimate ‘real world’ conditions.
G. Steinbeck +5 more
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Flutter analysis of the IAR 99 SOIM aircraft [PDF]
INCAS Bulletin, 2013 Flutter analysis is considered for the minimum altitude at which the minimum designed Mach number is achieved, for the maximum altitude at which the maximum designed dynamic pressure is obtained and for the minimum altitude at which transonic effects ...
Dorin LOZICI-BRINZEI +2 more
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