Nonlinear Aeroelastic Analysis of a Rolling Wraparound Fin

作者：Na Hyoung Jin^*; Kim Chun Gon; Lee In; Kim Jung Young; Bae Su Bin

来源：Journal of Spacecraft and Rockets, 2017, 54(5): 1041-1049.

DOI：10.2514/1.A33516

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.

• 出版日期2017-9