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Morphing hull concept for underwater vehicles

机译：水下航行器的变形船体概念

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摘要

Morphing or adaptive structures may be of interest in underwater vehicle design due to their potential for optimizing the operational envelopes of complex vehicles. Adaptive structures have been researched heavily and put to use extensively in the aerospace industry. This paper examines a possible use and benefit associated with morphing structures with unmanned underwater vehicles (UUVs). The growing resume of applications associated with UUVs as well as their unique abilities make them an excellent subject of study for morphing concepts. This paper focuses on possible uses of flexible hull morphing, specifically the benefits associated with such adaptability in terms of range, endurance, and speed. This research proposes a UUV system which has a flexible hull wrapped around a standard pressure hull. The annulus created between the pressure hull and the flexible hull is used for the storage of expendable energetics, in this case diesel fuel. Storing fuel in the newly created annulus also eliminates the need to waste space within the pressure hull storing fuel and thus the pressure hull may also be shrunk. This paper focuses on the benefits of morphing where the shape of the flexible hull remains the same but the diameter of the outer hull is shrunk in concert with the consumption of fuel thus decreasing the drag profile of the vehicle, resulting in increased vehicle range. Two different UUV missions were outlined: (1) constant speed survey and (2) slow speed survey with high speed excursion. For the slow speed survey mission, semi-submersible heavy vehicles carrying in the range of 50,000 kg of fuel could realize increases of range close to 40% when compared to a similarly sized vehicle without the adaptive capabilities. Small vehicles on the other hand, show limited benefits of diameter morphing, gaining less than 5% in range over the non-adaptive system. Excursion missions during which a surveying operation must be augmented with some sort of high speed maneuver show more significant benefits with a morphing system. The results show that diameter morphing is not viable in all situations, yet the concept shows promise for certain long range/long endurance UUV missions, as well as missions that require occasional high speed operation.
机译：变形或自适应结构由于其潜在的优化复杂车辆的运行范围的潜力而可能在水下车辆设计中受到关注。自适应结构已被大量研究，并已在航空航天工业中广泛使用。本文研究了无人水下航行器（UUV）与变形结构相关的可能用途和益处。与UUV相关的应用程序的不断增长的简历及其独特的功能使它们成为变形概念的优秀研究主题。本文着眼于柔性船体变形的可能用途，特别是与这种适应性有关的范围，耐用性和速度方面的好处。这项研究提出了一种UUV系统，该系统具有包裹在标准耐压船体周围的柔性船体。在压力壳和柔性壳之间产生的环面用于存储消耗性能量，在这种情况下为柴油。将燃料存储在新创建的环带中还消除了浪费压力壳体内存储燃料的空间的需要，因此压力壳体也可能收缩。本文着重讨论变形的好处，即柔性船体的形状保持不变，但外船体的直径随着燃料的消耗而缩小，从而减小了车辆的阻力分布，从而增加了车辆的行驶距离。概述了两个不同的UUV任务：（1）恒速测量和（2）高速偏移的慢速测量。对于慢速调查任务，与没有自适应功能的类似尺寸的车辆相比，载运50,000公斤燃油的半潜式重型车辆可以实现近40％的射程增加。另一方面，小型车辆显示出直径变形的好处有限，与非自适应系统相比，其射程增加不到5％。在巡回任务中必须使用某种高速机动来增强测量操作，这表明使用变形系统具有更大的优势。结果表明，直径变形并非在所有情况下都是可行的，但是该概念表明了对某些远距离/长寿命UUV任务以及偶尔需要高速运行的任务的希望。

著录项

  • 来源
    《Ocean Engineering》 |2014年第1期|92-102|共11页
  • 作者

    Timothy F. Miller; Farhan S. Gandhi; Russell J. Rufino;

  • 作者单位

    Applied Research Laboratory, The Pennsylvania State University, PO Box 30, State College, PA 16804, USA;

    Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Jonsson Engineering Center, Room 2049, 110 8th Street, Troy, NY 12180, USA;

    Boeing Rotorcraft Systems, Philadelphia, PA 19078, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Morphing; UUV; AUV;

    机译：变形;UUV;水下机器人;

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