Wire Flyer (WiFly): A cable flying vehicle system for high resolution water column profiling

从深水中的移动船只上对水柱进行剖面测量以实现高的垂直和水平分辨率是困难的。所有当前的解决方案，如CTD拖溜球？移动的船舶剖面仪和起伏的拖曳体受到船速或水深的显著限制，特别是超过100米。因此，很难获得足够分辨率的海洋剖面图，以确定许多相关尺度。私家侦探？该公司要求拨款设计和建造一个多功能的深度独立系统，使用飞行器，利用机翼产生的升力，以受控的方式在拖曳线上上下滑动。先前的工作已经证明了所提出的概念的可行性。缩尺模型试验表明，对于垂直和45度之间的索角，可实现的下滑斜率范围很广。翼片提供了一种新颖的低功率方法，以类似于逆风航行的帆船的方式，沿着缆线推进，其利用了在水中移动的线的自由流速度。试验还表明，使用几种弹簧安装方案，可以有效地隔离拖缆飞体的索振振动。拟议中的1000米系统将包括两个携带传感器的电缆飞行器，以及一个保持电缆紧密的压重物。飞行器将是流线型的，电池驱动的车辆，包含包装电子产品，机翼电机致动器，漂浮，声学通信硬件和被动铰接尾翼。数据收集、记录和控制将由一个小型微处理器和外围电路实现。拟议的运载工具将支持CTD传感器，并具有用于各种其他传感器的有效载荷能力，如荧光计、溶解气体和浊度，适用于广泛的研究。 使用这个项目作为本科工程项目是很有意义的。它将开发潜在的重要技术和方法;涉及工程、科学、项目管理、海上作业等几个不同学科;是一个足够大的项目，需要团队在几个阶段的努力，并有一个合理的范围来管理。这一剖面分析系统在沿海和深水海洋学中有广泛的应用，而且由于每一个自记飞行器都具有灵活的科学有效载荷能力，应该能够支持一系列物理、化学和生物取样系统。

Profiling the water column to achieve both high vertical and horizontal resolution from a moving vessel in deep water is difficult. All current solutions, such as CTD tow-yo?s, moving vessel profilers and undulating tow bodies are significantly limited by ship speed or water depth, especially beyond 100 meters. As a consequence it is difficult to obtain oceanographic sections with sufficient resolution to identify many relevant scales. The PI?s request funding to design and build a versatile depth-independent system using flying vehicles which slide up and down a towed wire in a controlled manner using the lift created by wing foils. Prior work has demonstrated the viability of the proposed concept. Scale model tests have shown a wide range of achievable glide slopes for cable angles between vertical and 45 degrees. The wing foils provide a novel low power method of propulsion along the cable, in similar fashion to a sailboat sailing up wind, that utilizes the free stream velocity of the wire moving through the water. Tests have also demonstrated effective isolation of cable strum vibration from the towed flyer body using several spring mount concepts. The proposed 1000 meter system will consist of two cable flying vehicles carrying sensors, and a depressor weight to keep the cable tight. The flyers will be streamlined, battery powered vehicles containing packaged electronics, a wing motor actuator, flotation, acoustic communications hardware, and a passively articulating tail fin. Data collection, logging and control will be achieved by a small microprocessor and peripheral circuitry. The proposed vehicles will support CTD sensors and have payload capacity for a variety of other sensors, such as fluorometers, dissolved gas and turbidity, applicable for a wide range of studies.Broader Impacts: Using of this project as an undergraduate engineering project makes a lot of sense. It will develop potentially important technology and methodologies; involves several different disciplines of engineering, science, project management, at-sea operations, etc.; is a big enough project to require a team effort over several phases and has a reasonable scope to be manageable. This profiling system has broad application in both coastal and deep-water oceanography, and by having a flexible scientific payload capability on each self-recording flyer vehicle, should be capable of supporting a range of physical, chemical and biological sampling systems.