Results 31 to 40 of about 159,512 (410)
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
doaj +1 more source
Flutter and resonances of a flag near a free surface [PDF]
J. Fluid Struct., 2020, 96, 103046, 2020 We investigate the effects of a nearby free surface on the stability of a flexible plate in axial flow. Confinement by rigid boundaries is known to affect flag flutter thresholds and fluttering dynamics significantly, and this work considers the effects of a more general confinement involving a deformable free surface.
arxiv +1 more source
Bayesian spectral density approach for identification and uncertainty quantification of bridge section's flutter derivatives operated in turbulent flow [PDF]
, 2021 This study presents a Bayesian spectral density approach for identification and uncertainty quantification of flutter derivatives of bridge sections utilizing buffeting displacement responses, where the wind tunnel test is conducted in turbulent flow. Different from traditional time-domain approaches (e.g., least square method and stochastic subspace ...
arxiv +1 more source
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
doaj +1 more source
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
semanticscholar +1 more source
Probabilistic Prediction of Coalescence Flutter Using Measurements: Application to the Flutter Margin Method [PDF]
arXiv, 2022 Zimmerman and Weissenburger's flutter margin method is widely used to estimate the aeroelastic coalescence flutter speed. In contrast to aeroelastic decay rates, the flutter margin exhibits monotonic decay with respect to airspeed redering it effective in extrapolating the flutter speed using flight test data conducted at pre-flutter airspeeds.
arxiv
Quantum Flutter: Signatures and Robustness [PDF]
Phys. Rev. Lett. 112, 015302 (2014), 2013 We investigate the motion of an impurity particle injected with finite velocity into an interacting one-dimensional quantum gas. Using large-scale numerical simulations based on matrix product states, we observe and quantitatively analyze long-lived oscillations of the impurity momentum around a non-zero saturation value, called quantum flutter.
arxiv +1 more source
Cardiovascular Electrophysiology, 2019 This study evaluated the impact of daily ECG (electrocardiogram) self‐recordings on time to documented recurrent atrial fibrillation (AF) or atrial flutter (AFL) and time to treatment of recurrent arrhythmia in patients undergoing catheter radiofrequency
Isaac L Goldenthal +11 more
semanticscholar +1 more source
Flagmill -A new power generator utilizing flexible sheet-
Journal of Fluid Science and Technology, 2015 The present study proposes “a flagmill”, which is a new power generator utilizing the flutter of a flexible sheet such as a flag. The sheet flutter causes the angular oscillation of the supporting pole. Since the supporting pole is connected to the power
Donghyuk KANG +2 more
doaj +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
doaj +1 more source