This paper uses a modular approach to validate the modeling process of the Wing and Rotor Aeroelastic Test System (WRATS) tiltrotor using two different rotorcraft comprehensive analyses: RCAS and CAMRAD Ⅱ. The subcomponents used to build the models are first validated using experimental testing and ABAQUS three-dimensional and one-dimensional modeling. The assembled model is then used to predict the whirl-flutter stability boundary for two different configurations that were tested. Results show good agreement between the two analyses and previously measured wind-tunnel data for the first configuration but not as well during for the second configuration. Parametric studies were also conducted to determine the influence of key attributes on the whirl-flutter stability boundary.
展开▼
