scholarly journals A Coupled Aeroelastic Model for Launch Vehicle Stability Analysis

2010 ◽  
Author(s):  
Jeb Orr
Keyword(s):  
Stability Analysis ◽  
Launch Vehicle ◽  
Vehicle Stability ◽  
Aeroelastic Model

scholarly journals The Use of Gramian Matrices for Aeroelastic Stability Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Douglas Domingues Bueno ◽  
Clayton Rodrigo Marqui ◽  
Luiz Carlos Sandoval Góes ◽  
Paulo José Paupitz Gonçalves
Keyword(s):  
Stability Analysis ◽  
Flight Control ◽  
Nonlinear Behavior ◽  
Computational Time ◽  
Benchmark Problems ◽  
Aeroelastic Flutter ◽  
Aeroelastic Model ◽  
Frequency Domain Methods ◽  
Space Formulation ◽  
New Methodologies

Most of the established procedures for analysis of aeroelastic flutter in the development of aircraft are based on frequency domain methods. Proposing new methodologies in this field is always a challenge, because the new methods need to be validated by many experimental procedures. With the interest for new flight control systems and nonlinear behavior of aeroelastic structures, other strategies may be necessary to complete the analysis of such systems. If the aeroelastic model can be written in time domain, using state-space formulation, for instance, then many of the tools used in stability analysis of dynamic systems may be used to help providing an insight into the aeroelastic phenomenon. In this respect, this paper presents a discussion on the use of Gramian matrices to determine conditions of aeroelastic flutter. The main goal of this work is to introduce how observability gramian matrix can be used to identify the system instability. To explain the approach, the theory is outlined and simulations are carried out on two benchmark problems. Results are compared with classical methods to validate the approach and a reduction of computational time is obtained for the second example.

Linear stability analysis of an aeroelastic model of phonation

2006 ◽  
Vol 120 (5) ◽  
pp. 3372-3372
Author(s):  
Zhaoyan Zhang ◽  
Juergen Neubauer ◽  
David Berry
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Aeroelastic Model
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