科研之友
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摘要
This work presents the design and validation results for a quasi-static morphing helicopter rotor blade with an adaptive tip. The adaptive tip can increase its local span by 100% while maintaining a constant chord, effectively doubling the airfoil area of the morphing section leading to an overall increase in the full rotor radius. The technology components include a morphing honeycomb-like core structure that has a Poisson's ratio of zero as it extends and an elastomer-matrix-composite skin that is bonded to the core structure. Design analyses along with experimental validation on hardware specimens are presented. The validated model is used in a numerical optimization to design a system that will self-actuate under a rotor's normal operating conditions. Feasibility of the design is demonstrated in terms of hardware fabrication methods and overall performance to satisfy system design goals.
- 出版日期2015-6
