Nonlinear Aeroelastic Analysis of a Rolling Wraparound Fin

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The nonlinear aeroelastic characteristics of a rolling wraparound fin with freeplay nonlinearity are investigated. The aerodynamic forces are computed by solving the Euler equations in a body-fixed rotating coordinate frame. The nonlinear static and normal mode analyses for a rotating wraparound fin are performed using MSC Nastran. The V-g method, the traditional incremental damping approach to compute the flutter velocity, is used for aeroelastic analysis in the frequency domain, and the results are shown to compare with the time-history responses obtained by integration of the equations of motion using minimum state approximation time-domain aerodynamics. The effects of the freeplay nonlinearity and rolling motion of a wraparound fin on aeroelastic characteristics are investigated.
Publisher
AMER INST AERONAUTICS ASTRONAUTICS
Issue Date
2017-09
Language
English
Article Type
Article
Keywords

MISSILE CONTROL FIN; FLUTTER CHARACTERISTICS; CONTROL SURFACE; FREE PLAY; STRUCTURAL NONLINEARITIES; PROJECTILE

Citation

JOURNAL OF SPACECRAFT AND ROCKETS, v.54, no.5, pp.1041 - 1049

ISSN
0022-4650
DOI
10.2514/1.A33516
URI
http://hdl.handle.net/10203/226404
Appears in Collection
AE-Journal Papers(저널논문)
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