CAREER: Origami-Inspired Reconfigurable Surfaces that Enable Controllable Radiative Properties

职业：受折纸启发的可重构表面，实现可控辐射特性

• 批准号: 1749395
• 负责人: Brian Iverson
• 金额: $ 50.48万
• 依托单位: Brigham Young University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-05-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1749395&HistoricalAwards=false
• 关键词: CAREER; Origami; Inspired; Reconfigurable; Surfaces

Modern telecommunications, astronomical discovery, and national security rely on space-based objects (e.g. satellites, probes, spacecraft, telescopes, etc.) that operate in extreme thermal radiation conditions. The goal of this CAREER project is to provide a way to control the amount of heat the surface of a space object radiates by changing the surface shape. Radiation of thermal energy affects surface temperature. Sun motion (e.g. orbit or daily solar cycles) results in a wide range of radiation conditions. This work will provide a way for a surface or component to respond to changes in the sun location and achieve a desired heating or cooling rate. An educational companion to the scientific objectives of this project is the creation of the Broadening Undergraduate Education in Science and Technology (BURST) Program to be implemented for the development of undergraduate researchers. Educational development activities for undergraduate classmen participating in the Spacecraft Group at BYU will culminate in the participation of BURST projects (undergraduate research) to assist students in the pursuit of a graduate education and provide a mechanism to explore the research project. Activities performed with students in the Spacecraft Group include outreach to underrepresented minority high school students by assisting with college preparation, K-12 STEM activities with low-income schools, and the creation of a website for access to data and instructional tools.The goal of this CAREER project is to provide dynamic control of radiative surface properties using origami-inspired surfaces. Actuation of origami can enable control of surface topography and corresponding cavity geometries to regulate net radiative heat transfer in response to changes in the radiative environment. Intrinsic radiative surface properties are static and therefore unable to adapt to changing thermal environments. Dynamically controlling the net radiative heat flux by controlling radiative properties would enable thermal management of surfaces where radiation is a dominant mode of heat exchange with the environment. Origami-inspired surfaces, comprised of tessellations (a tiled plane comprised of one or more geometric shapes), are able to provide an adaptable surface topography to modify the apparent radiative surface behavior. As the tessellations that comprise the unfolded surface collapse on each other during folding, deep grooves are formed which trap radiative energy due to the high-aspect ratio of the cavity. Controlling the cavity angle through mechanical actuation results in control of the degree of black-like behavior. To achieve the goal of providing thermal management through controllable radiative properties, the following objectives in the study of origami-inspired surfaces (e.g. Modified V-groove, Miura-ori, and Baretto Mars) will be pursued: 1) quantify and model emission of thermal radiation; 2) quantify and model absorption of thermal radiation; 3) predict and validate the net heat transfer rate at these surfaces; and 4) establish undergraduate research preparation through training activities that culminate in a research experience. Tools and analysis methods developed by this work will enable design for radiative thermal management through simple actuation methods and provide predictive relations for radiative behavior of angular topographies.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

现代通信、天文发现和国家安全依赖于天基物体(例如卫星、探测器、航天器、望远镜等)。在极端的热辐射条件下工作。这个职业项目的目标是提供一种通过改变表面形状来控制空间物体表面辐射热量的方法。热能的辐射影响表面温度。太阳运动(例如，轨道或每日太阳活动周期)会导致广泛的辐射条件。这项工作将为表面或部件提供一种方法，以响应太阳位置的变化，并实现所需的加热或冷却速度。与该项目的科学目标相辅相成的一个教育项目是创建扩大本科生科学技术教育(Burst)计划，以发展本科生研究人员。为参加杨百翰大学航天器小组的本科生开展的教育发展活动，最终将参加Burst项目(本科生研究)，以帮助学生攻读研究生教育，并提供探索研究项目的机制。与航天器小组的学生一起开展的活动包括通过协助大学准备向代表性不足的少数族裔高中生进行外联，与低收入学校开展K-12 STEM活动，以及创建一个网站以获取数据和教学工具。这一职业项目的目标是利用折纸启发表面提供对辐射表面属性的动态控制。折纸的驱动可以控制表面形貌和相应的空腔几何形状，以调节净辐射换热，以响应辐射环境的变化。固有的辐射表面属性是静态的，因此无法适应不断变化的热环境。通过控制辐射特性来动态控制净辐射热流，将能够对辐射是与环境的主要热交换模式的表面进行热管理。以折纸为灵感的曲面由镶嵌(由一个或多个几何形状组成的平铺平面)组成，能够提供自适应的曲面地形以修改表面的辐射曲面行为。当组成展开表面的镶嵌在折叠过程中彼此坍塌时，由于腔的高纵横比，形成了捕获辐射能量的深凹槽。通过机械驱动控制腔体角度，可以控制类黑行为的程度。为了实现通过可控的辐射特性提供热管理的目标，折纸表面(例如，改进的V型槽、Miura-Ori和Baretto火星)的研究将追求以下目标：1)对热辐射的发射进行量化和建模；2)对热辐射的吸收进行量化和建模；3)预测和验证这些表面上的净传热率；以及4)通过最终形成研究经验的培训活动，为本科生的研究做好准备。这项工作开发的工具和分析方法将使通过简单的驱动方法进行辐射热管理的设计成为可能，并为角度地形的辐射行为提供预测关系。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Passive CubeSats for remote inspection of space vehicles

用于航天器远程检查的无源立方体卫星

• DOI: 10.1117/1.jrs.13.032505
• 发表时间: 2019
• 期刊: Journal of Applied Remote Sensing
• 影响因子: 1.7
• 作者: Walton, Patrick;Cannon, Josh;Damitz, Brian;Downs, Tyler;Glick, Dallon;Holtom, Jacob;Kohls, Nicholas;Laraway, Alex;Matheson, Iggy;Redding, Jason
• 通讯作者: Redding, Jason

Heat transfer, efficiency and turn-down ratio of a dynamic radiative heat exchanger

动态辐射换热器的传热、效率和调节比

• DOI: 10.1016/j.ijheatmasstransfer.2019.118441
• 发表时间: 2019
• 期刊: International Journal of Heat and Mass Transfer
• 影响因子: 5.2
• 作者: Mulford, Rydge B.;Jones, Matthew R.;Iverson, Brian D.
• 通讯作者: Iverson, Brian D.

Total Hemispherical Apparent Radiative Properties of the Infinite V-Groove with Diffuse Reflection

• DOI: 10.2514/1.t5485
• 发表时间: 2018-08
• 期刊: Journal of Thermophysics and Heat Transfer
• 影响因子: 2.1
• 作者: Rydge B. Mulford;Nathan S. Collins;Michael S. Farnsworth;M. Jones;Brian D. Iverson

EFFICIENT MONTE CARLO RAY TRACING FOR APPARENT CAVITY BEHAVIOR

• DOI: 10.1615/ihtc17.380-20
• 发表时间: 2023
• 期刊: Proceeding of International Heat Transfer Conference 17
• 作者: Ernest T. Lee;Ehsan Mofidipour;Matthew R. Jones;Brian D. Iverson

Control of Net Radiative Heat Transfer With a Variable-Emissivity Accordion Tessellation

• DOI: 10.1115/1.4042442
• 发表时间: 2019-03-01
• 期刊: JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
• 作者: Mulford, Rydge B.;Dwivedi, Vivek H.;Iverson, Brian D.
• 通讯作者: Iverson, Brian D.