Results 21 to 30 of about 177,434 (388)
Research Progress and Prospect of Thermal Flutter of Hypersonic Vehicles
Hangkong 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
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Research on Feature Extracted Method for Flutter Test Based on EMD and CNN
International 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
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Flutter test of rudder with real servo actuator in continuous transonic wind tunnel
Xibei 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
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Nonlinear Flutter Analysis for a Long-Span Suspension Bridge
Shock 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
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Incremental healthcare cost burden in patients with atrial flutter only
Frontiers 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
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Mayo Clinic Cardiology, 2020 The heart is made up of 4 chambers (Figure 1). Blood enters the heart from the body into the right atrium and then travels into the right ventricle, which pumps blood to the lungs where it collects oxygen.
Melissa Boyer, B. A. Koplan
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Thinner biological tissues induce leaflet flutter in aortic heart valve replacements
Proceedings of the National Academy of Sciences of the United States of America, 2020 Significance Percutaneous valve replacement procedures enable the deployment of bioprosthetic heart valves through a catheter, which offers a minimally invasive option to treat valvular heart disease. Although these bioprostheses typically employ thinner
Emily L. Johnson +9 more
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Applied 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
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Performance Evaluation of a Piezoelectric Energy Harvester Based on Flag-Flutter
Micromachines, 2020 In the last few decades, piezoelectric (PZT) materials have played a vital role in the aerospace industry because of their energy harvesting capability.
H. Elahi +6 more
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Current Biology, 2005 For many conservationists, butterflies are some of the key species that can indicate the quality of an environment not only for themselves but for many other, often less visible, species. Some of their specific needs are often well known, but movements around their habitat and important factors within it are less understood. To help address this issue,
openaire +2 more sources