An underwater bionic flexible flapping wing propulsion device

Abstract

The invention discloses an underwater bionic flexible flapping wing propelling device. The device is composed of a motor, a transmission gear, a bracing wire wheel set, a fin ray mechanism, an outer framework and a skin. The outer framework is installed on pressed rods of the fin ray mechanism and covered with the skin. The fin ray mechanism is composed of the multiple pressed rods and inhaul cables to flap and is high in rigidity and capable of transmitting large power and bringing the performance of materials into full play. The structure of the flexible flapping wing propelling device is simple and light and quick and convenient to use, and the motor drives the transmission gear through a coupling to rotate. The moment is transmitted to the bracing wire wheel set through a reduction gear, the bracing wire wheel set rotates to pull the multiple inhaul cables, so that the fin ray mechanism is pulled to swing up and down, the outer framework fixed to the fin ray mechanism and the skincovering the outer framework move and deform along with the swing of fin rays, and streams are pushed to generate stable periodical thrust. The flexible flapping wing propelling device has the beneficial effects of being simple in control, large in deformation range, small in noise and high in stability.

Description

technical field [0001] The invention relates to an underwater propulsion device, in particular to an underwater bionic flexible flapping wing propulsion device. Background technique [0002] The efficient swimming method of fish has always been the goal pursued by human beings. With the continuous deepening of the research on underwater propulsion devices, more and more researchers have begun to study underwater bionic propulsion devices. Compared with the traditional propeller propulsion method, the fish swimming process has the advantages of low noise, high maneuverability and high efficiency, which can meet the requirements of underwater vehicles to cope with complex sea conditions. Therefore, underwater bionic propulsion technology has become an important research direction of underwater propulsion technology. [0003] According to the different thrusting parts of fish, the propulsion mode of fish swimming can be divided into body and tail fin propulsion mode and centra...

AI Technical Summary

Problems solved by technology

However, these materials still have certain limitations. Due to the limited degree of deformation of the shape memory alloy, the fin surface driven by it cannot swing greatly. Although the pneumatic actuator can achieve a relatively large deformation, the size of the air actuator and large inertia, making it more difficult in practical applications

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