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根据该水下滑翔机研究项目负责人俞建成介绍,从本质上说,水下滑翔机是一种水下机器人,主要是用来收集海水水文参数信息的。
这种新型水下机器人具有低功耗、长续航力、高静音等特点,可以对特定海域进行高精度大范围的水体观测,能够有效提高海洋环境的空间和时间测量密度,是现有水下观测手段的有效补充。水下滑翔机主要的应用就是现场观测海洋的环境参数,包括海水的温度、盐度、溶解氧、叶绿素、营养盐等要素。
俞建成称,未来它可以用于为海洋环境预测预报提供实时的现场观测数据、海上环境现场测量评估、特殊海洋现象科学研究等。
资料图:“海翼”号滑翔机下水(图源:北京时间)
如何炼成“深潜第一”
在水下,“海翼”号滑翔机前进时的轨迹可不是直线,而是像海豚游弋时那样是沿着“之”字形的轨迹向前航行。之所以这样是与它的动力系统有关。我们平时看到的船舶大都是依靠船下的螺旋桨旋转所产生的推力前行。在动物界,鱼类是通过尾部的摆动前行,鸭子是靠脚蹼上下打水游动。而“海翼”号很特殊,它没有螺旋桨,体外也没有其他动力装置。它的动力全部来自“肚子”里的一个类似“鱼鳔”一样的油囊,通过吸油和排油改变自身的浮力,同时借助于大翅膀和改变自身重心提供前进动力。
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