EAGER: Collaborative Research: Laminar Flow Inlet and Inertia Navigation System Innovation for the NSF/NCAR G-V Aircraft

EAGER：合作研究：NSF/NCAR G-V 飞机的层流入口和惯性导航系统创新

• 批准号: 2023961
• 负责人: Rainer Volkamer
• 金额: $ 27万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-04-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2023961&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Laminar; Flow

This EAGER project supports the development of a new inlet for the NSF/NCAR G-V aircraft that will enhance the ability of scientists to measure ambient ions, condensable vapors, and short-lived reactive species in the atmosphere. These types of compounds typically exist in the atmosphere at very low levels, are highly reactive, and are typically lost upon first contact with a surface. Therefore, sampling becomes a critical factor in their measurement. The new inlet will become an important community resource for air sampling from the G-V aircraft. Society will benefit from the improved tools for predicting the sinks of greenhouse gases, the sources of aerosols, and the impact of these on air quality and climate. This effort includes the early stages of the design, construction, and assessment based on computational fluid dynamics simulations, and the Federal Aviation Authority certification of a laminar flow inlet that is pre-requisite for quantitative sampling of condensable vapors and ambient ions; and this effort also explores the feasibility for autonomous startup of an inertia navigation system using differential GPS for inlet-free remote sensing detection of radical species in the open atmosphere. Currently, certified inlets on the G-V aircraft use turbulent air flow regimes that are subject to wall losses, and suitable for the sampling of longer lived species. The autonomous remote-sensing and laminar inlet design will enable the sampling of a multitude of organic and inorganic radical and short lived species not possible with the currently available inlet designs. The new inlet will provide the potential to fill gaps in our understanding of oxidative capacity, and those condensable vapors that add to the early growth of nanoparticles. This research includes the participation of two graduate students and a postdoctoral scholar.Although this EAGER proposal is exploratory and is a high-risk, high-reward effort, the extensive experience of the participating scientists and their existing analytical capabilities reduce both the risk and the required investment.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.

该急切的项目支持开发NSF/NCAR G-V飞机的新入口，该进口将增强科学家在大气中测量环境离子，可凝聚蒸气和短寿命的反应物种的能力。这些类型的化合物通常存在于非​​常低的水平，具有高反应性，通常在与表面首次接触时丢失。因此，采样成为其测量的关键因素。新入口将成为G-V飞机空气采样的重要社区资源。社会将受益于改进的工具，以预测温室气体的水槽，气溶胶的来源以及这些对空气质量和气候的影响。这项工作包括基于计算流体动力学模拟的设计，构造和评估的早期阶段，以及联邦航空管理局对层流入口的认证，这是对可固定蒸气和环境离子进行定量采样的先决条件；而且，这项工作还探讨了使用差分GPS在开放气氛中对激进物种的无遥远遥感检测的惯性导航系统的自主启动的可行性。目前，在G-V飞机上经过认证的入口使用湍流损失的湍流机制，适合对寿命更长的物种进行采样。自动远程感应和层状入口设计将使目前可用的入口设计不可能对许多有机和无机自由基和短寿命物种进行采样。新入口将提供潜力，以填补我们对氧化能力的理解以及增加纳米颗粒早期生长的可凝结蒸气的可能性。这项研究包括两名研究生和一名博士后学者的参与。尽管这项渴望的建议是探索性的，并且是一种高风险，高等的努力，但参与科学家的丰富经验及其现有的分析能力降低了风险和所需的投资。这项奖项反映了NSF的法定任务，反映了经过评估的依据，这是通过评估的范围来进行的。