Moti Karpel

DOI Number: N/A

Conference number: IFASD-2019-118

Frequency-domain linear aeroservoelastic (ASE) equations of motion, with a unified application in dynamic response to gust, control commands and direct force applications, are presented. The increased-order modeling (IOM) approach is then used to complement the linear solutions with nonlinear effects. The resulting process, implemented in the Dynresp framework software, is demonstrated in various industrial applications and research projects. The parametric flutter margin (PFM) method, based on adding a reference parameter that expands the system stability range, is applied with virtually the same response formulation for linear and nonlinear stability analysis. The more general MIMO version of PFM is shown to be very useful in design studies and overall stability characteristics. The SISO version, however, is shown to be more practical and intuitive as it is based on direct response functions. The computation framework facilitates for convenient inclusion of morphing scenarios and rapid changes in flight conditions using the nonlinear time-domain block. Promising applications to flutter flight tests and high-fidelity fluid-structure interaction are presented.

Read the full paper here

In Categories: Aeroelastic Analysis Frameworks, IFASD 2019
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.