Novel Design and Validation Test of Rollable CFRP Blade for UAM

초록

UAM must have large wings or propellers to generate lift, which causes constrained ground operation. In order to solve the spatial inefficiency of blades, we present a novel design concept called the rollable blade that can be rolled and unfolded. For this, CFRP (carbon fiber reinforced plastic) deployable boom is theoretically designed and manufactured and takes the role of support beam structure in the rollable blade system. Second, the length of the transient region during deployment is theoretically estimated for the design of the inner support frame to maintain the stiffness of the blade system in the transient region. Finally, the rollable blade system in the combination of 3 bi-stable CFRP support beam, CFRP skin with NACA0018 airfoil and an internal support frame is designed and manufactured. The repeated deployment cycle test was conducted over 100 times for the validation of the proposed rollable wing.

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