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针对某型号固体火箭发动机,设计生产了监测发动机,突破了可同时监测温度和界面应力的微型、低功耗内埋式界面传感器的研制和埋置技术,成功搭建了基于界面传感器的发动机界面实时监测系统;利用监测系统对公路运输过程中发动机界面的应力-温度进行了实时监测,得到了公路运输过程中发动机界面的应力-温度变化规律;利用工业CT对经历公路运输后的监测发动机进行无损探伤,验证了传感器与发动机界面的相容性。研究结果表明,在2个发动机截面安装3个成等腰直角三角形分布的界面传感器,同时在另一个发动机截面安装3个成正三角形分布的界面传感器的布置方案监测效果较为理想;公路运输载荷引起的应力变化幅值约为0.003 MPa,远小于界面的允许应力0.6 MPa;经历监测试验后的发动机未发现有界面脱粘现象,传感器和发动机界面相容性较好。研究结果可为型号发动机健康监测系统研制提供技术支持,对提高武器导弹系统的可靠性具有重要意义。
For a certain type of solid rocket motor, we designed and manufactured a monitoring engine, which broke through the development and embedded technologies of miniature and low power embedded interface sensors that can simultaneously monitor temperature and interface stress. The interface of the engine based on interface sensors The monitoring system was used to monitor the stress-temperature of the engine interface during the road transport in real time. The change of stress-temperature of the engine interface during road transport was obtained. The industrial CT was used to monitor the engine undergoing road transport without damage Flaw detection, the sensor and the engine interface to verify the compatibility. The results show that the installation of three isosceles right-angled triangle distributed interface sensors on two engine cross-sections and the installation of three equally-angled distributed interface sensors on the other engine cross-section have better monitoring results. The road transport load causes The magnitude of stress change is about 0.003 MPa, which is far less than the allowable stress 0.6 MPa of the interface. The de-bonding phenomenon of the engine after the monitoring test is not found and the compatibility between the sensor and the engine interface is good. The research results can provide technical support for the development of the model engine health monitoring system and have great significance for improving the reliability of the weapon missile system.