Real-time monitoring technology of flight test risks throughout the entire process based on a layered safety model

Flight test safety monitoring is an important means to improve the efficiency of test aircraft flight tests and ensure flight test safety. Aiming at the test aircraft flight test risk analysis and safety monitoring needs, this paper proposes a real-time monitoring technology for the whole process of flight test risks based on a hierarchical safety model. Through the extraction and risk level classification of the whole process of flight test safety risks, the flight test safety risk items and risk levels are obtained; then, by constructing a hierarchical safety model for test aircraft, the risk causes of flight test risks are analyzed and complete flight test safety information is captured; then, the knowledge graph is used to store large-scale flight test safety knowledge, and at the same time, a fast retrieval algorithm is used in the real-time monitoring process to realize the rapid identification and efficient retrieval of flight test risks based on telemetry data; finally, a test aircraft safety monitoring software with safety critical parameters as the core is designed to assist monitoring personnel in making decisions, and ultimately achieve the goal of timely discovery, timely warning, and timely disposal of safety risks during the monitoring process.