In this paper, a squid-like jet propeller actuated by piezoelectric pumps is designed, which can realize underwater pulsedjet process. The squid-like jet propeller comprises a bionic mantle and a rigid framework. The bionic mantle is a sealedflexible cavity, and a plurality of piezoelectric pumps are embedded on the bionic mantle to continuously absorbwaterinto the cavity. When the piezoelectric pump works, water is sucked into the flexible cavity, when the pressure inthecavity reaches a certain value, the jet is ejected through the nozzle. Firstly, this paper studies the structural designof thebionic mantle, then studies the influence of the number and the water absorption performance of piezoelectric pumpsaswell as water absorption time on the propulsion performance of the squid-like jet propeller, and then studies thestructural deformation of the bionic mantle and the variation of the parameters of the jet propeller during the pulsedjet process. The squid-like jet propeller can control the pulsed jet cycle and other propulsion performance.
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