进气道／发动机相容性试飞中总压畸变数据的采集与处理

摘要

The methods on acquisition and processing of total pressure distortion data in inlet/engine com- patibility flight test were researched. The sensor selection, station distribution, the rake design, and data ac- quisition system construction were specified. General software for dynamic data processing was developed, data processing method and parameter selection were emphasized. Applying the methods to an inlet/engine compatibility flight test project, final results showed that the measuring and processing methods were rea- sonable and feasible, cut-off frequency and filter order and filtering function should be carefully selected in dynamic data processing.%研究了进气道／发动机相容性试飞中总压畸变数据的采集与处理方法，详细介绍了传感器选型、测点布局、受感部设计、测试及采集系统构建的要点，开发了通用动态数据处理软件，并重点研究了动态总压数据处理方法和参数选择问题。通过某型飞机／发动机的进气道，发动机相容性试飞应用及其数据处理表明：提出的测试与采集方案合理可行，工程应用情况良好；动态数据处理中应合理选择截止频率、滤波器阶次以及滤波函数。