光纤光栅在活动发射平台应变测试中的应用研究

Application Research of the Fiber Grating at the Strain Test of the Rocket Launching Platform

为了能够对发射平台在火箭加注和发射过程中的应变进行实时监测,提出一种基于光纤光栅的平台应变测试方法,通过在发射平台关键位置布置光纤光栅传感器,建立一套火箭活动发射平台应变监测系统。系统通过了火箭发射任务的检验,完整获取了2次加注发射过程中的平台应变数据。通过数据分析,并与应变电测结果进行比较,数据有效且可表征火箭起飞前后的各个状态及平台的承载状态。试验结果表明,光纤光栅可用于火箭发射过程中发射平台的应变测试,可为建立平台健康管理系统和平台可靠性评估提供数据支撑。

Fiber grating is applied to monitor the strain of the launching platform in the process of fuel filling and rocket launching in real time.Through fixing lots of fiber grating sensors on key position,a strain monitor system is established.The system endures all the test of the rocket launching,fully gets the strain data of the platform in two launching missions.The test data is effective and can explain the each state of rocket launching and the carrying status of the platform though comparing testing data with the results of strain gages.The testing results prove that the fiber grating can be used in the test of the launching platform in launching.It is also proved that these testing data can be used in the healthy management system and reliability assessment of the mobile launching platform.