Deepglider Reliability Development

Deepglider 可靠性开发

• 批准号: 1153983
• 负责人: Charles Eriksen
• 金额: $ 89.9万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1153983&HistoricalAwards=false
• 关键词: Deepglider; Reliability; Development

This project will carry out further development and testing to bring the advanced prototype for a full ocean depth capable glider to the stage that it can be used for scientific investigation. Deepgliders are designed to dive to as deep as 6 km and return to the sea surface about 250 times in a single mission lasting as long as 18 months and traveling as far as 10,000 km through the ocean. They sample temperature, salinity, and dissolved oxygen along sawtooth paths through the ocean and communicate them to shore via satellite telemetry. Two-way communication allows commands to be transmitted so that autonomous behavior can be controlled remotely from a pilot anywhere with an internet connection. The projected operational cost of each slanting full depth profile is ~$120, almost two orders of magnitude less than what a deep ocean hydrographic cast costs (although deep casts generally measure many more variables). Deepgliders offer sampling persistence and frequency that is unmatched by ships. Their mobility and remote control enables spatial description of the ocean's internal structure that would require an underwater forest of moored sensors to match. Their economy can be exploited to observe the deep ocean far more intensively and extensively than is possible with conventional methods so as to answer fundamental questions about ocean circulation, the role of the ocean in climate, boundary current systems, and omnipresent mesoscale eddies.Three Deepgliders capable of diving to 6 km depth have been constructed to date, two of which have been lost in a total of 5 trial deployments in the tropical Atlantic in the past year. One was adrift at the sea surface with communication difficulties when lost in a mission that had sampled only the upper ocean, while effects of high pressure may not be ruled out in the other loss. Deepglider has reached 5920 m depth, executed a 275 km section to 5250 m depth, used energy at a rate that implies 18 month missions are feasible, and measured temperature and salinity with resolution and stability comparable to what is attained with CTD casts. The purpose of this project is to improve the reliability of Deepglider so that it can achieve design mission endurance and range goals, evaluate the stability and accuracy of its measurements, and develop it into a credible tool for oceanographic research. Several new Deepgliders are to be constructed and used in an extensive program of both laboratory and field tests. Results from a staggered sequence of tests on the currently available Deepglider and the first of the new units will be used to modify the design of the subsequent units. Laboratory tests will include intensive pressure cycle tests of hull integrity and buoyancy engine performance. Field tests will take place at a deep ocean time series site for logistic convenience and the availability of regular high quality shipboard and moored measurements for comparison, most likely the Hawaii Ocean Time-series Study (HOTS) site or the Bermuda Atlantic Time-series Study (BATS) site.Intellectual Merit: This project will bring to readiness a technique that will extend autonomous underwater glider depth range to the water column entirety in nearly the entire ice-free open deep ocean, endurance to more than one year, and horizontal range to 10,000 km. These improvements by factors of 2-6 over present technology are projected to accompany reductions in glider usage cost and only a modest (~25%) increase in glider fabrication cost.Broader Impact: The transition of Deepglider from advanced prototype to reliable oceanographic tool will enable extensive, relatively frequent sampling of the deep ocean?s temperature, salinity, oxygen, and current structure. Affordable means to sample the water column will advance knowledge of ocean circulation and the ocean?s role in climate. The technology will invite the development and addition of other sensors to Deepglider as a versatile platform for ocean observation. It will also lead to commercialization and widespread use of such vehicles.

该项目将进行进一步的开发和测试，以将高级原型带到可充分的海洋深度滑翔机的阶段，以用于科学研究。 Deepgliders的设计可潜入深度6公里，并在一次任务中返回大约250次，持续长达18个月，并穿过海洋10,000公里。他们沿着海洋采样温度，盐度和溶解的氧气，并通过卫星遥测将它们传达给海岸。双向通信允许传输命令，以便可以通过Internet连接的任何地方远程控制自主行为。每个倾斜深度轮廓的预计操作成本约为120美元，几乎比深海水文铸件成本低两个数量级（尽管深层铸件通常测量了更多的变量）。 Deepgliders提供了船只无与伦比的采样持久性和频率。它们的移动性和遥控器可以对海洋内部结构进行空间描述，这将需要停泊的传感器的水下森林匹配。可以利用他们的经济来比传统方法更深入，更广泛地观察深海，以回答有关海洋循环，海洋在气候，边界当前系统中的作用，无处不在的中尺度涡流的基本问题。过去一年。一个人在仅取样上海的任务中丢失的任务时，一个人在海面上漂流，而高压的影响可能不会在其他损失中排除。 DeepGlider已达到5920 m的深度，执行了275 km的截面至5250 m的深度，以一种暗示18个月任务的速度使用的能量，并测量了与CTD铸件相当的温度和盐分，并具有分辨率和稳定性。该项目的目的是提高DeepGlider的可靠性，以便它可以实现设计任务耐力和范围目标，评估其测量的稳定性和准确性，并将其发展为可靠的海洋学研究工具。将在实验室和现场测试的广泛计划中构建和使用几个新的深胶条。从当前可用的DeepGlider和新单元中的第一台测试序列的结果将用于修改后续单元的设计。实验室测试将包括船体完整性和浮力发动机性能的密集压力周期测试。现场测试将在深海时间序列网站上进行，以提供物流的便利性以及定期的高质量船舶和系泊测量以进行比较，最有可能是夏威夷海洋时间序列研究（HOTS）网站（HOTS）站点或百慕大大西洋时间序列研究（BATS）的网站（BATS）站点。该项目将为供应量延长自动绘制，以使整个自动远程远程远程自动绘制，而无需远程远程远程远程远程远程远程远程自动绘制。无冰的开阔海洋，耐力超过一年，水平范围为10,000公里。预计将2-6的因素对2-6的因素进行改进，以伴随滑翔机使用成本的降低，而滑翔机制造成本的降低（约25％）增加（约25％）。BRODER的影响：DeepGlider从高级原型到可靠的海洋学工具的过渡将启用大量的，相对频繁的深海洋温度，盐分，盐酸？saliniency？s saliniency？s saliniency？s saliniency？s的结构，氧气，氧气和当前的结构。采样的负担得起的水柱将提高人们对海洋循环的了解和海洋在气候中的作用。该技术将邀请其他传感器开发和添加到DeepGlider，作为海洋观察的多功能平台。这还将导致商业化和广泛使用此类车辆。