Results 131 to 140 of about 12,055 (162)
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Close-loop stabilization of a flexible wing aircraft
IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE, 2011The design of the airframe of an aircraft is constrained due to aeroelastic effects (generally related to the wings) that induce flexible modes on the structure, and may lead to structural instability. This paper addresses the problem of active mode stabilization in an aircraft with flexible wings.
Jorge I. Sofrony +3 more
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Flight Dynamics of Highly Flexible Flying Wings
Journal of Aircraft, 2006The paper presents a theory for flight-dynamic analysis of highly flexible flying-wing configurations. The analysis takes into account large aircraft motion coupled with geometrically nonlinear structural deformation subject only to a restriction to small strain. A large motion aerodynamic loads model is integrated into the analysis.
Mayuresh J Patil, Hodges, Dewey H
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Sensor placement for flexible wing shape control
2012 American Control Conference (ACC), 2012In a series of recent papers, shape control of a flexible plate through piezoceramic actuation has been presented. In that work, full-state feedback was assumed. In this paper, we move to sensor placement for design of an observer. Piezoceramic actuators and sensors for strain and velocity will be used. We will compare the performance of three systems:
Cody W. Ray, Belinda A. Batten
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Effect of wing inertia on hovering performance of flexible flapping wings
Physics of Fluids, 2010Insect wings in flight typically deform under the combined aerodynamic force and wing inertia; whichever is dominant depends on the mass ratio defined as m∗=ρsh/(ρfc), where ρsh is the surface density of the wing, ρf is the density of the air, and c is the characteristic length of the wing.
Bo Yin, Haoxiang Luo
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Control of a flexible wing aircraft
2013Modern aircrafts are becoming lighter and more flexible to meet fuel efficiency, endurance and other requirements. The structural modes therefore occur at lower frequencies and there is an increased coupling between the structural and rigid body modes.
Graafmans, J.A.J. +2 more
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Flexible Wing Identification for Aerodynamic Force Measurement on Flapping Wings
Volume 6: 19th International Conference on Micro- and Nanosystems (MNS); 21st International Conference on Multibody Systems, Nonlinear Dynamics, and Control (MSNDC); 37th Conference on Mechanical Vibration and Sound (VIB); 38th Fluid Power and Motion Control Symposium (FPMC)Abstract In this paper we report on our experiment design and data collection on correlating dynamical properties of flexible flapping wings in generating lift. Our goal is to relate the deformations and strain gauge measurements along the wing to the aerodynamic force distribution. Therefore the dynamical characteristics of the wings
Bradley Rayman +3 more
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Propulsive properties of a flexible oscillating wing with time-varying camber deformation
Ocean Engineering, 2021Yongcheng Li, Ziying Pan
exaly
Effectiveness of flexible wing in a flapping flight
The Proceedings of Mechanical Engineering Congress, Japan, 2016Tadateru ISHIDE +6 more
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Metamaterials in flexible wings
Flexible wings of insects can adapt to varying flight conditions, ensure maneuverability, and enable stability of forward, flapping, and backward flights. Yet, the challenging aerodynamics of these wings, from the modeling point of view, and enormous variability in wings’ morphology prevent achieving a complete understanding of their dynamics.openaire +1 more source
Trajectory Tracking Control for a Three-Dimensional Flexible Wing
IEEE Transactions on Control Systems Technology, 2022Zhijie Liu, Wei He, Xinyue Tang
exaly