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Journal of Experimental Biology 56,155-165 (1972)
Published by Company of Biologists 1972

A Study in Jet Propulsion: An Analysis of the Motion of the Squid, Loligo Vulgaris

W. JOHNSON ¹, P. D. SODEN ¹, and E. R. TRUEMAN ¹

¹ Department of Mechanical Engineering, University of Manchester, Institute of Science and Technology, and Department of Zoology, University of Manchester, Manchester M13 9PL

1. A method is presented which allows the jet thrust and motion of a cephalopod to be calculated from basic information on its shape and material properties.

2. A simple model is used to illustrate the technique, and the results are compared with experimental data for Loligo vulgaris. Agreement between theoretical and experimental results is shown to be reasonably good.

3. This approach could be applied to other cephalopods and other animals using jet propulsion.

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