The realtime fault detection and alarm system for liquid propellant rocket engines used in ground tests is founded.The hardware,software and functional structure of the system are firstly designed and analyzed,and then the integrated decision-making method is proposed for realtime fault detection.The system has not only been tested with a large amount of test data and online simulations,but also has been verified in 2 actual ground tests.Results show that the system founded can detect the faults occurred in...