Results 51 to 60 of about 159,512 (410)

Three dimensional flutter analysis and wind-tunnel experiments of a rectangular sheet supported by a wire (Influence of eccentricity on the flutter characteristics and occurrence condition)

open access: yesNihon Kikai Gakkai ronbunshu, 2016
This paper deals with the flutter analysis of a rectangular sheet supported by a wire in axial flow. In the flutter analysis, Doublet-Point Method based on unsteady lifting surface theory is used to calculate the unsteady fluid force acting on the sheet ...
Keiichi HIROAKI, Masahiro WATANABE
doaj   +1 more source

Ablation of Post Transplant Atrial Flutter and Pseudo-fibrillation Using Magnetic Navigation via a Superior Approach. [PDF]

open access: yes, 2012
Ablation of cavotricuspid ishtmus flutter and atrial tachycardia in a complex substrate has never been reported using remote navigation via superior approach.
Mandapati, Ravi   +2 more
core   +3 more sources

Flutter Boundary Prediction of a Two Dimensional Airfoil in Transonic Flight Regime with the Preset Angles of Attack [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
Angle of attack has impact on transonic flow filed and aerodynamic force, but most of current researches on flutter use zero angle hypothesis, which has no consideration about angle of attack.

doaj   +1 more source

Aircraft Active Flutter Suppression: State of the Art and Technology Maturation Needs

open access: yes, 2017
Active flutter suppression, which is a part of the group of flight vehicle technologies known as active controls, is an important contributor to the effective solution of aeroelastic instability pr...
E. Livne
semanticscholar   +1 more source

Dosimetric sensitivity of an enhanced leaf model (ELM) for individual versus averaged machines

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background With the introduction of a new multi‐leaf collimator (MLC) enhanced leaf model (ELM) in the Varian Eclipse™ treatment planning system, there is currently limited data regarding the dosimetric sensitivity to real‐world variation in the ELM parameters, and its clinical relevance. Purpose To characterize the variation in ELM parameters
Rafail Panagi   +2 more
wiley   +1 more source

Atrial Flutter, The Commonly Misdiagnosed Arrhythmia as Supraventricular Tachycardia or Sinus Tachycardia

open access: yesThe Iraqi Journal of Medical Sciences, 2021
Background: Atrial flutter is a common arrhythmia in structurally normal or abnormal heart. The electrocardiographic features of it can be mistaken for sinus tachycardia or supraventricular tachycardia.
Amar Alhamdi
doaj   +1 more source

Experimentally determined flutter from two- and three-bladed model bearingless rotors in hover [PDF]

open access: yes, 1985
A series of experiments was performed on a 1.8-m-diam model rotor in hover for the principal purpose of investigating the lead-lag stability of isolated bearingless rotors.
Bousman, W. G., Dawson, S.
core   +1 more source

Structured Control Design for a Highly Flexible Flutter Demonstrator

open access: yesAerospace, 2019
The model-based flight control system design for a highly flexible flutter demonstrator, developed in the European FLEXOP project, is presented. The flight control system includes a baseline controller to operate the aircraft fully autonomously and a ...
M. Pusch, D. Ossmann, T. Luspay
semanticscholar   +1 more source

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong   +11 more
wiley   +1 more source

Sedimentation Dynamics of Bodies with Two Planes of Symmetry [PDF]

open access: yesPhys. Rev. Lett. 134 (2025) 014002
We show that bodies with two planes of symmetry can display a range of behaviors even without inertia. Any such body supports a conserved quantity in its dynamics, and is either a settler, a drifter or a flutterer, depending only on its shape. At large time, settlers and drifters, respectively, fall vertically and obliquely, while flutterers rotate ...
arxiv   +1 more source

Home - About - Disclaimer - Privacy