Results 281 to 290 of about 3,578,244 (328)

Control Allocation for Maneuver and Gust Load Alleviation of Flexible Aircraft

, 2020
As aircraft designs aim for higher aerodynamic efficiency, the structures becomemore flexible, requiring additional features to alleviate the loads encountered from gusts and maneuvers.
J. Hansen, Molong Duan, I. Kolmanovsky, C. Cesnik   +3 more
semanticscholar   +1 more source

Concept of a “Flexible” Combi Aircraft

SAE Technical Paper Series, 1988
<div class="htmlview paragraph">An airframe manufacturer is compelled to include the requirements of the air cargo transport market, existing and anticipated, in the definition of its products- A combi aircraft, derived from the passenger version, requires configuration flexibility. With the addition of an aft located main deck cargo door, six (6)
openaire   +1 more source

Structural model identification of a small flexible aircraft

2014 American Control Conference, 2014
The system identification of a light-weight, high-aspect ratio wing is presented. Experimental data is obtained from a ground vibration test. The input signals are sine sweep wave forces and the outputs are the corresponding acceleration responses of the aircraft.
Claudia P. Moreno, Abhineet Gupta, Harald Pfifer, Brian Taylor, Gary J. Balas   +4 more
openaire   +2 more sources

Flexible aircraft gust encounter simulation using subspace projection model reduction

Aerospace Science and Technology, 2019
Reduced-order modelling of multidisciplinary computational fluid dynamics can enable routine industrial gust load analysis. Key to the herein presented model reduction approach is that it modularly builds upon the widely accepted modal structural reduced-
P. Bekemeyer, S. Timme
semanticscholar   +1 more source

Controller Design for a Flexible Aircraft

2006
The paper presents an overview of modeling the dynamic behavior of a large four-engine flexible aircraft and considers some of the options for control system design. The first part describes how to build an integral model, which can be used for simulating the rigid motion as well as the flexible motion of the aircraft.
M. Hanel, K. H. Well
openaire   +1 more source

Close-loop stabilization of a flexible wing aircraft

IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE, 2011
The 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, Claudia P. Moreno, Peter J. Seiler, Gary J. Balas   +3 more
openaire   +2 more sources

Intelligent design of reconfigurable flexible assembly fixture for aircraft panels based on smart composite jig model and knowledge graph

Journal of engineering design
The current demand for aircraft panel assembly fixtures necessitates agile manufacturing solutions. Traditional welding fixtures struggle to meet diverse panel types, high quantities, and short manufacturing cycles.
Shuang Meng, Wei Fan, Xin Wang, Lianyu Zheng, Zuoxu Wang   +4 more
semanticscholar   +1 more source

Influence of control on flexible aircraft crack growth

Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000
The overall objective of this research is to investigate and assess the leverage generated by flight control loops for reducing fatigue damage and enhancing structural integrity. An analytical state space crack growth model is briefly considered first. Next, a dynamic flexible aircraft model is presented. Stress response from the aircraft is applied as
Sibok Yu, Brett Newman
openaire   +2 more sources

Adaptive fault‐tolerant control for a nonlinear flexible aircraft wing system

Asian journal of control, 2018
Fault‐tolerant control problems have been extensively studied in all kinds of control systems. However, there is little work on fault‐tolerant control for distributed parameter systems.
Yuanyuan Zhang, Jinkun Liu, Wei He
semanticscholar   +1 more source

Nonlinear Aeroelastic Control of Very Flexible Aircraft Using Model Updating

Journal of Aircraft, 2018
A nonlinear modeling strategy is introduced to drive online optimization-based controllers for trajectory tracking and stabilization of very flexible aircraft.
Yi-Nan Wang, A. Wynn, R. Palacios
semanticscholar   +1 more source