STTR Phase I: Development of a Compact Cloud Spectrometer and Impactor

STTR 第一阶段：紧凑型云光谱仪和撞击器的开发

• 批准号: 9960535
• 负责人: Gregory Kok
• 金额: $ 9.86万
• 依托单位: Droplet Measurement Technologies
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9960535&HistoricalAwards=false
• 关键词: STTR; Phase; Development; Compact; Cloud

This Small Business Technology Transfer Phase I project aims to prove the feasibility of developing a new in-situ instrument for measurement of the droplet size distribution and condensed water mass. This Cloud Spectrometer and Impactor (CSI) would be based on two existing technologies: the light-scattering spectrometer and the counterflow virtual impactor. Features of both instruments would be combined in a lightweight, compact, commercial instrument for measurement of cloud microphysical characteristics on an aircraft platform. Specifically, in Phase I the proposer would design two shrouded inlets for the CSI: one that impacts and evaporates droplets for a measurement of condensed water mass, and one that optically measures the droplet size distribution. A plan for incorporating all the necessary measurement and electronic components within the internal framework of a standard housing used on research aircraft would be developed. Methods for providing sufficient dry carrier gas, even at high-altitude, and would be assessed. Candidate techniques for measuring water vapor after droplets and ice crystals are impacted and evaporated within the CSI inlet would be evaluated. This instrument development focuses on an airborne instrument, but the feasibility of ground-based applications would be explored. Research organizations and industrial companies needing accurate measurements of the size and mass of condensed water will use this instrument. For research organizations, measurements of droplet size distribution and condensed water mass are important for weather forecasting and understanding global climate change. In industry, the application of agricultural chemicals and many coating processes rely on liquid water sprays. The accurate determination of the droplet size and total water content is important for correct application of the material.

这个小企业技术转让第一阶段项目旨在证明开发一种新的现场仪器的可行性，用于测量液滴尺寸分布和冷凝水质量。这种云分光仪和撞击器将以两种现有技术为基础：光散射分光仪和逆流虚拟撞击器。这两种仪器的特点将结合在一个轻便、紧凑的商业仪器中，用于测量飞机平台上的云微物理特性。具体而言，在第一阶段，提议者将为CSI设计两个带护罩的入口：一个用于撞击和蒸发液滴以测量冷凝水质量，另一个用于光学测量液滴尺寸分布。将制定一项计划，将所有必要的测量和电子部件纳入研究飞机上使用的标准外壳的内部框架内。将评估提供足够的干燥载气的方法，即使是在高海拔地区。将评估用于测量在CSI入口内液滴和冰晶被撞击和蒸发后的水蒸气的候选技术。这一仪器的开发重点是机载仪器，但将探讨地面应用的可行性。 需要精确测量冷凝水大小和质量的研究机构和工业公司将使用该仪器。对于研究机构来说，测量液滴大小分布和凝结水质量对于天气预报和理解全球气候变化非常重要。在工业中，农业化学品的应用和许多涂层工艺依赖于液态水喷雾。准确测定液滴尺寸和总含水量对于正确应用材料非常重要。