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Journal Articles International Journal for Numerical Methods in Fluids Year : 2005

Numerical validation of a stability model for a flexible over-expanded rocket nozzle

Emmanuel Lefrançois
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Abstract

A numerical approach for the aeroelastical stability of an over-expanded rocket engine is proposed in this paper. The main idea is to offer a better understanding of the repercussions likely to appear from the aeroelastic coupling in terms of side loads that may be responsible for damage effects on the engine. After a brief description of the stability model issued from previous works (Pekkari's team) and details upon a numerical fluid–structure coupling code, comparative calculations are conducted. The stability model is then called into question and a finer analysis is proposed to explain its major tendency to over-predict the aeroelastic frequency shift in comparison with numerical coupling results.

Dates and versions

hal-01993676 , version 1 (25-01-2019)

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Emmanuel Lefrançois. Numerical validation of a stability model for a flexible over-expanded rocket nozzle. International Journal for Numerical Methods in Fluids, 2005, 49 (4), pp.349-369. ⟨10.1002/fld.1000⟩. ⟨hal-01993676⟩
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