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- W63650795 abstract "ABSTRACT A numerical model for studying aeroelastic stability is proposed in this paper with application to the overexpanded rocket engines. Starting from previous results obtained by Pekkari's team [PEK 93], the model is extended to take into account dynamic instabilities. A mono- dimensional model is used to check the effects of the chosen solicitation form on the global stability of a flexible nozzle. We observe that stability is influenced with the initial position of the separation shock. A static instability will be revealed by the presence of a zero value for one modal frequency, whereas a dynamic instability will appear after coalescing modes (similar to well-known flutter phenomena). Finally, a calculation is conducted in coupling two codes, one dedicated to structure dynamics, the second to the fluid phase in order to validate the stability model in the general two-dimensional case of an overexpanded rocket engine." @default.
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- W63650795 date "2000-01-01" @default.
- W63650795 modified "2023-10-15" @default.
- W63650795 title "Numerical Study of the Aeroelastic Stability of an Overexpanded Rocket Nozzle" @default.
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- W63650795 doi "https://doi.org/10.1080/12506559.2000.10511483" @default.
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