A High-Speed Launching Mechanism Inspired by a Slingshot Spider’s Web
作者机构：Robotics and Motion LaboratoryDepartment of Mechanical and Industrial EngineeringUniversity of Illinois at Chicago842 W.Taylor St.ChicagoIL 60607USA
出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)
年 卷 期：2022年第19卷第2期
页 面：440-447页
核心收录：
学科分类：08[工学] 0802[工学-机械工程] 0836[工学-生物工程] 0704[理学-天文学] 0702[理学-物理学]
基 金：We would like to thank Dr. Matthew P. Alonso Dr. Michael A. Brown and Dr. Jonathan Komperda for their mentorship on this project and Mycauley Scott-Stirn for helping with welding.
主 题：Slingshot spider Launching mechanisms Catapult Bioinspiration
摘 要：Slingshot spiders use their conical webs to launch themselves at high speeds to catch prey.We built a launching mechanism inspired by the slingshot spider.Our launch mechanisms comprise a steel structure with eye bolts to hold a conical web made from latex rubber tubing.We pull the web by a winch using a lever arm.A quick-release mechanism connects the web to the winch using a tough-grid paracord.When we release the quick-return mechanism,the projectile material consisting of a steel ball achieved an acceleration of 5107 m s^(-2) or 521 times gravity,and a speed of 66.41 m s^(-1).The power per unit mass and energy per unit mass of our prototype was one tenth and one fifth that of the spider’s web respectively.In particular,we found that web structure consisting multiple radial web elements reinforced with circumferential web elements provide enhanced stiffness;as a comparison our web had a stiffness of about eight times that of traditional slingshot with a single radial web element.Our results suggest that adapting designs from nature can lead to potentially superior performance of man-made contraptions.
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