Results 11 to 20 of about 159,512 (410)

Neural network-based aeroelastic system identification for predicting flutter of high flexibility wings [PDF]

open access: yesScientific Reports
Flutter is an extremely significant academic topic in both aerodynamics and aircraft design. Since flutter can cause multiple types of phenomena including bifurcation, period doubling, and chaos, it becomes one of the most unpredictable instability ...
Qing Guo   +4 more
doaj   +2 more sources

Association of typical atrial flutter and cavotricuspid isthmus ablation on clinical recurrence after cryoballoon ablation for atrial fibrillation

open access: yesFrontiers in Cardiovascular Medicine, 2023
Typical atrial flutter commonly occurs in patients with atrial fibrillation (AF). Limited information exists regarding the effects of concurrent atrial flutter on the long-term outcomes of rhythm control.
Joo Hee Jeong   +17 more
doaj   +1 more source

Research Progress and Prospect of Thermal Flutter of Hypersonic Vehicles

open access: yesHangkong gongcheng jinzhan, 2022
Hypersonic vehicle is subjected to severe aerodynamic load and aerodynamic heating during the flight.Thus structural dynamic stability and response caused by aerodynamic force and aerodynamic heating should be fully considered in the design process of ...
CHEN Haoyu   +3 more
doaj   +1 more source

Full-Span Flying Wing Wind Tunnel Test: A Body Freedom Flutter Study

open access: yesFluids, 2020
Aiming at the experimental test of the body freedom flutter for modern high aspect ratio flexible flying wing, this paper conducts a body freedom flutter wind tunnel test on a full-span flying wing flutter model.
Pengtao Shi   +4 more
doaj   +1 more source

Atrial Flutter

open access: yesInterpretation of the Electrocardiogram in Small Animals, 2020
was attempted in eight patients with drug refractory type I atrial flutter. In seven of eight patients, a zone of prolongation and fragmentation of the endocardial electrogram was found in the low posterior part of the right atrium.
N. Saoudi   +3 more
semanticscholar   +1 more source

Research on Feature Extracted Method for Flutter Test Based on EMD and CNN

open access: yesInternational Journal of Aerospace Engineering, 2021
Due to the inevitable deviations between the results of theoretical calculations and physical experiments, flutter tests and flutter signal analysis often play significant roles in designing the aeroelasticity of a new aircraft.
Hua Zheng   +3 more
doaj   +1 more source

Flutter test of rudder with real servo actuator in continuous transonic wind tunnel

open access: yesXibei Gongye Daxue Xuebao, 2022
Flutter wind tunnel test is an important approach of investigation of transonic flutter characteristics of flight vehicle. Comparing with the blow-down wind tunnel, the long-running and low dynamic pressure capabilities of continuous transonic wind ...
HAN Jiangxu   +5 more
doaj   +1 more source

Nonlinear Flutter Analysis for a Long-Span Suspension Bridge

open access: yesShock and Vibration, 2021
The wind-induced flutter of the long-span suspension bridge structure is extremely harmful to the bridge. Therefore, it is necessary to study the nonlinear problem of wind-induced flutter.
Jieshan Liu   +3 more
doaj   +1 more source

Incremental healthcare cost burden in patients with atrial flutter only

open access: yesFrontiers in Cardiovascular Medicine, 2023
BackgroundLimited information is available on the costs related to atrial flutter only. This study provides a comprehensive estimate of the cost in patients with atrial flutter only versus matched patients without any atrial arrhythmia.MethodsPatients ...
Kathryn M. Kim   +3 more
doaj   +1 more source

Experimental Investigations on Nonlinear Flutter Behaviors of a Bridge Deck with Different Leading and Trailing Edges

open access: yesApplied Sciences, 2020
Recently, the nonlinear flutter behavior of long-span suspension bridges has attracted attention. Unlike the classical theory of bridge flutter, the stable limit cycle oscillations (LCO) have occurred for some bluff aerodynamic configurations when the ...
Wenjie Li, Shujin Laima
doaj   +1 more source

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