Water entry of slender segmented projectile connected by spring

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dc.contributor.authorWu, Zhengyang
dc.contributor.authorZhang, Chengchun
dc.contributor.authorWang, Jing
dc.contributor.authorShen, Chun
dc.contributor.authorYang, Liang
dc.contributor.authorRen, Luquan
dc.date.accessioned2020-09-22T13:26:18Z
dc.date.available2020-09-22T13:26:18Z
dc.date.issued2020-09-16
dc.description.abstractAn object that enters the water experiences a large impact acceleration at the initial stage of water entry, which can cause structural damage to objects that are dropped or launched into the water. To reduce the peak impact acceleration, a spring-connected segmented projectile with compressible nose was designed. Through inertial measurement unit and high-speed camera, the influence of the nose compressibility on the initial impact acceleration was qualitatively investigated. The experimental results demonstrate that the introduction of a spring between the nose and the main body of the projectile can significantly suppresses the peak acceleration during the early stage of impact (0–50 ms). Furthermore, the maximum impact acceleration experienced by the main body is only related to the maximum compression of the nose without considering the spring stiffness. In addition, using the spring exerts a slight effect on the non-dimensional pinch-off times of the cavity but increases the initial velocity required for the occurrence of cavity pinch-off events on the side of the main bodyen_UK
dc.identifier.citationWu Z, Zhang C, Wang J, et al., (2020) Water entry of slender segmented projectile connected by spring. Ocean Engineering, Volume 217, December 2020, Article number 108016en_UK
dc.identifier.issn0029-8018
dc.identifier.urihttps://doi.org/10.1016/j.oceaneng.2020.108016
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15827
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCavity dynamicsen_UK
dc.subjectImpact acceleration reductionen_UK
dc.subjectWater entryen_UK
dc.subjectSpringen_UK
dc.subjectSegmented projectileen_UK
dc.titleWater entry of slender segmented projectile connected by springen_UK
dc.typeArticleen_UK

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