Fighting Flutter - Aviation Safety
2006年2月12日 · Flutter can involve a wing, ailerons, elevators/ruddervators and other aircraft structures. For an aircraft wing, flutter may occur when the aircraft is accelerated to a speed where, when even slightly disturbed, the wings flex, and the resultant vibrations do not have sufficient damping, or are in fact intensified by inherent resonance ...
Aeroelastic analysis and flutter control of wings and panels: A …
This section will introduce the current research status and results of aeroelastic flutter of large aspect ratio wings, swept wings and wings with externally mounted wings under different airflow velocity ranges.
How are aircraft wings protected against flutter - aerodynamic ...
2017年10月28日 · This is flutter. The ways to counteract the flutter, as found here (section Flutter Fixes), are: Move the center of gravity of the wing closer to the center of twist. Raise the frequency of the flutter by making the wing stiffer and lighter (better energy dissipation).
Abstract: An interactive computer program was developed for wing flutter analysis in the conceptual design stage. The objective was to estimate flutter instability boundaries of a typical wing, when detailed structural and aerodynamic data are not available. Effects of change in key
The Incredible B-2 Wing Flutter Video and What It Means.
2017年12月29日 · This remarkable video of a Northrop Grumman B-2 Spirit stealth bomber undergoing wing flutter testing on June 14, 1995 is fascinating for a number of reasons.
Neural network-based aeroelastic system identification for …
2025年1月3日 · Wing flutter is a form of self-excited vibration with non-attenuated amplitude generated by an interaction of aerodynamic force, elastic restoring force, and inertial force...
Aeroelastic analysis and flutter control of wings and panels: A …
2021年11月27日 · This paper reviews the recent advances in aeroelastic analysis and flutter control of wings and panel structures. The mechanism of aeroelastic flutter of wings and panels is presented.
Feed-Forward Neural Network-Based Prediction of Flutter
2025年1月9日 · The study employs modal representation to transform wing flutter analysis into a linear set of ordinary differential equations, subsequently converting them into an eigenvalue problem to examine stability characteristics. The paper describes a typical two-dimensional airfoil model with a control flap, as depicted in Fig. 1.
the regime for which the aeroelastic flutter simulations are conducted. This data is meant to aid our subsequent analysis of the aeroelastically pitching foil. We then discuss pitching airfoils and focus on three key parameters: the reduced velocity, the equilibrium angle-of-attack, and the location of the hinge point.
Research on the flutter characteristics of folding wings with …
2024年12月1日 · This study on a variable-sweep folding wing with an adjustable outboard wing sweep angle has demonstrated that, under an appropriate hinge stiffness, altering the outboard wing sweep angle can enhance the critical flutter speed for morphing wing.