Results 41 to 50 of about 126,211 (195)
A dynamical interpretation of flutter instability in a continuous medium
, 2010 Flutter instability in an infinite medium is a form of material instability corresponding to the occurrence of complex conjugate squares of the acceleration wave velocities.
Andrea Piccolroaz +16 more
core +1 more source
Flutter Mechanism of a Thin Plate Considering Attack Angles
Applied SciencesIt is well known that the flutter performance of a section is sensitive to the changing wind angles of attack. Exploring the thin plate’s flutter mechanism under different angles of attack is excellent, which helps understand inner flutter ...
Chengjun Yan, Qi Wang, Bo Wu, Lin Huang
doaj +1 more source
Flutter Condition Estimation for 3-D Cantilever Plate Using Fully Coupled Fluid – Structure Interaction [PDF]
Engineering and Technology Journal, 2014 The aeroelastic responses and the flutter condition of 3-D flexible cantilever plate were estimated by developed fully coupled fluid-structure interaction(FSI) approach.
Hayder Sabah Abd Al-Amir +2 more
doaj +1 more source
Study on coupled mode flutter parameters of large wind turbine blades
Scientific ReportsAs the size of wind turbine blades increases, the flexibility of the blades increases. In actual operation, airflow flow can cause aerodynamic elastic instability of the blade structure.
Yong Zhuang, Guangming Yuan
doaj +1 more source
Study on the asymmetric extension state's flutter characteristics of a telescopic wing UAV
Hangkong gongcheng jinzhanTelescopic wing UAVs not only exhibit excellent flight performance across a wide speed range but can also utilize asymmetric wing extensions for flight control. This study focuses on a UAV with asymmetrically extendable wings.
YANG Jian +4 more
doaj +1 more source
Frequency- and time-domain methods related to flutter instability problem [PDF]
Građevinski Materijali i Konstrukcije, 2014 Bridge flutter phenomenon presents an important criterion of instability, which should be considered in the bridge design phase. This paper presents different bridge flutter methods which can be used to solve the flutter problem.
Šarkić Anina +2 more
doaj +1 more source
Atypical atrial flutters [PDF]
Europace, 2002 Typical atrial flutter is due to a counterclockwise macro-re-entry circuit localized in the right atrium with a surface ECG pattern showing predominantly negative F waves in the inferior leads and positive F waves in V1. Recently it has been proposed to classify atrial flutter on the basis of its cavo-tricuspid isthmus dependence rather than on the ECG
P, Ricard +6 more
openaire +2 more sources
Isthmus Dependent Atrial Flutter Cycle Length Correlates with Right Atrial Cross-Sectional Area
Indian Pacing and Electrophysiology Journal, 2009 Background: Right atrial flutter cycle length can prolong in the presence of antiarrhythmic drug therapy. We hypothesized that the cycle length of right atrial isthmus dependent flutter would correlate with right atrial cross-sectional area measurements.
Kousik Krishnan +6 more
doaj
The high efficiency and accuracy prediction analysis of the flutter envelope
Hangkong gongcheng jinzhan, 2023 It is significant to efficiently and accurately determine the flutter boundary of various aircraft configura-tions in the aircraft design. In this paper, the linear unsteady aerodynamic method and nonlinear unsteady aerody-namic method are adopted for ...
CHENG Fang, LI Junjie
doaj +1 more source
Neurology, 2013 A previously healthy 30-year-old man presented with gradually worsening oscillopsia 2 weeks after an unusual headache; there was ocular flutter on examination (video on the Neurology ® Web site at [www.neurology.org][1]) without other findings. Brain MRI was unremarkable.
Saiko, Nasu +3 more
openaire +2 more sources