Radiation and Ablation in Rapidly Expanding Flows

该项目的目的是记录来自一个快速膨胀流区域的辐射光谱，该区域代表了返回舱从迎风面到背风面激波层的通道。这项工作的意义在于，它解决了航天器的一个关键领域，在这个领域，我们的设计技术的不确定性在表面传热方面是300%的数量级，目前的飞行器必须使用大的安全系数来确保生存能力。该项目的产出将是一个辐射参数数据库，这将使人们能够开发出精确的气流模型，预期这将有助于设计更安全、更可靠、结构质量更低的先进航天器。

The aim of the project is to record the spectra of radiation from a region of rapidly expanding flow representative of the passage of the shock layer on a re-entry capsule from the windward to the leeward surfaces. The significance of this work is that it addresses a critical area of spacecraft where the uncertainties of our design techniques are of the order of 300 per cent in terms of surface heat transfer, and current vehicles have to use large safety factors to ensure survivability. The outputs from the project will be a data base of radiative parameters which should enable accurate models of the flow to be developed, which is expected to facilitate the design of advanced spacecraft with greater safety and reliability, and with lower structural mass.