Jiří Čečrdle

DOI Number: N/A

Conference number: IFASD-2019-049

Submitted paper describes the methodologies of compliance with whirl flutter-related requirements of FAR / CS 23 and 25 regulation standards. Methodologies are demonstrated on the example of a twin wing-mounted engine aircraft. For the compliance with FAR / CS 23 standard, two approaches are used: 1) standard approach to comply with the main requirement (§629(e)(1)) and 2) optimisation-based approach to comply with the requirement of parameter variations (§629(e)(2)). Standard approach, in which analyses are performed sequentially (state-by-state), is good for the nominal state. Optimisation-based analysis is used to calculate stability margins, which are then used for evaluation of stability reserve in terms of specific parameters. For compliance with FAR / CS 25 standard, the additional requirements to analyse specific failure states and adverse condition states are described.

Read the full paper here

In Categories: IFASD 2019, Whirl Flutte
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.