A post-processing tool for experimental data is developed to rebuild the instantaneous and local distributions of the fuel port diameter and the fuel regression rate throughout the port conduct during a firing test. The main objective is to use the developed methodology to be able, at a given instant during the firing test, to simulate a hybrid rocket engine configuration and to validate the related numerical modeling. The methodology is based on the coupling between the instantaneous fuel mass flow rate obtained by a ballistic reconstruction technique and the port diameter measurement throughout the port conduct after the firing test. The ballistic reconstruction method is adapted and applied to an experimental hybrid rocket, using hydrogen peroxide/high density polyethlylene propellants, with a catalytic injector (HYCAT). Firstly, a set of representative firing tests is selected from the HYCAT hybrid rocket engine testing campaign. Secondly, an analytical approach leads to instantaneous evolutions of the fuel port diameter and the fuel regression rate profiles throughout the fuel port conduct. The rebuilt profiles of the instantaneous port diameter show the ability of the methodology to restore the space and time distribution of the fuel port diameter. Nevertheless, the fuel regression rate distributions show some limitations of the methodology even though the average is coherent with the ballistic reconstruction trends.

开发了一种用于实验数据的后处理工具，以在燃烧测试期间重建整个进气口行为的燃油口直径和燃油消退率的瞬时和局部分布。主要目标是使用开发的方法，能够在射击测试期间的给定时刻模拟混合动力火箭发动机的配置并验证相关的数值模型。该方法基于通过弹道重建技术获得的瞬时燃料质量流量与燃烧测试后整个端口进行的端口直径测量之间的耦合。弹道重建方法适用于使用过氧化氢/高密度聚乙烯推进剂和催化注射器（HYCAT）的混合动力火箭实验。首先，从HYCAT混合火箭发动机测试活动中选择了一组代表性的射击测试。其次，一种分析方法导致了整个燃料端口行为中燃料端口直径的瞬时变化和燃料回归速率曲线。瞬时端口直径的重建轮廓显示了该方法恢复燃料端口直径的空间和时间分布的能力。尽管如此，即使平均水平与弹道重建趋势保持一致，燃料回归率分布仍显示出该方法的某些局限性。瞬时端口直径的重建轮廓显示了该方法恢复燃料端口直径的空间和时间分布的能力。尽管如此，即使平均水平与弹道重建趋势保持一致，燃料回归率分布仍显示出该方法的某些局限性。瞬时端口直径的重建轮廓显示了该方法恢复燃料端口直径的空间和时间分布的能力。尽管如此，即使平均水平与弹道重建趋势保持一致，燃料回归率分布仍显示出该方法的某些局限性。