Title: Application of FDKL method for order reduction of RFA unsteady aeroelastic models
Abstract:An efficient time domain reduced-order aeroelastic model is presented based on the Roger's Rational Function Approximation model and the Frequency-Domain Karhunen-Loeve Method. Using frequency respons...An efficient time domain reduced-order aeroelastic model is presented based on the Roger's Rational Function Approximation model and the Frequency-Domain Karhunen-Loeve Method. Using frequency responses of the Roger's model, the method generates a real, orthogonal set of aeroelastic modes. These KL modes are optimal in the solution space with a minimum possible number of modes. When invoked with Galerkin's error minimization, they generate a reduced-order aeroelastic model. The proposed method is demonstrated using an aeroelastic model of a representative commercial airplane with 638 state variables. It is shown that the aeroelastic results of the reduced-order model match extremely well with the results obtained from the full-order model in both open-loop and closed-loop analyses. The new aeroelastic model can be efficiently used in repeated analysis of dynamic loads, optimization, and closed-loop designs.Read More
Publication Year: 2001
Publication Date: 2001-06-11
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot