Abstract
An aerodynamic model necessary for a state equation of an aeroelastic system is proposed. The system is assumed to be a lifting surface in incompressible flow. The model consists of a nonmemory component and a memory component. The former is directly expressed by generalized coordinates. The latter is approximately expressed by using augmented system which is strictly proper and of finite dimension. The augmented system is constructed from Marcov parameters which are derived from an appropriate numerical computation of unsteady aerodynamics. A simple example is given to illustrate the approximation properties of the model. The characteristics of the model are: 1) no complex parameters are necessary to determine the model, 2) system stability of the model is easily guaranteed, and 3) accuracy of the model is good in both the high- and lowfrequency regions.
| Original language | English |
|---|---|
| Pages (from-to) | 163-171 |
| Number of pages | 9 |
| Journal | AIAA Journal |
| Volume | 21 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 1983 |
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All Science Journal Classification (ASJC) codes
- Aerospace Engineering
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A finite state aerodynamic model for a lifting surface in incompressible flow. / Miyazawa, Yoshikazu; Washizu, Kyuichiro.
In: AIAA Journal, Vol. 21, No. 2, 01.01.1983, p. 163-171.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A finite state aerodynamic model for a lifting surface in incompressible flow
AU - Miyazawa, Yoshikazu
AU - Washizu, Kyuichiro
PY - 1983/1/1
Y1 - 1983/1/1
N2 - An aerodynamic model necessary for a state equation of an aeroelastic system is proposed. The system is assumed to be a lifting surface in incompressible flow. The model consists of a nonmemory component and a memory component. The former is directly expressed by generalized coordinates. The latter is approximately expressed by using augmented system which is strictly proper and of finite dimension. The augmented system is constructed from Marcov parameters which are derived from an appropriate numerical computation of unsteady aerodynamics. A simple example is given to illustrate the approximation properties of the model. The characteristics of the model are: 1) no complex parameters are necessary to determine the model, 2) system stability of the model is easily guaranteed, and 3) accuracy of the model is good in both the high- and lowfrequency regions.
AB - An aerodynamic model necessary for a state equation of an aeroelastic system is proposed. The system is assumed to be a lifting surface in incompressible flow. The model consists of a nonmemory component and a memory component. The former is directly expressed by generalized coordinates. The latter is approximately expressed by using augmented system which is strictly proper and of finite dimension. The augmented system is constructed from Marcov parameters which are derived from an appropriate numerical computation of unsteady aerodynamics. A simple example is given to illustrate the approximation properties of the model. The characteristics of the model are: 1) no complex parameters are necessary to determine the model, 2) system stability of the model is easily guaranteed, and 3) accuracy of the model is good in both the high- and lowfrequency regions.
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U2 - 10.2514/3.8047
DO - 10.2514/3.8047
M3 - Article
VL - 21
SP - 163
EP - 171
JO - AIAA Journal
JF - AIAA Journal
SN - 0001-1452
IS - 2
ER -