A Novel Design Scheme for an Ejection Device Inspection Instrument

Inspecting an ejection device of an aircraft has been a long-standing problem due to technical, safety and cost restraints. A novel inspection instrument was designed to meet this need using low-pressure cold gas instead of the high-pressure gas. Dynamic simulation and analysis were carried out to approximate nominal parameters and MCU+CPLD design was used to increase the clock division option of the system to adapt to different ejection velocities to reduce errors. Application feedback from the fields shows that the instrument is easy to operate and reliable, and can check the performance of many types of ejection device, which will improve reliability and accuracy of releasing, the level of protection for the ejection device and effectively guarantee flight safety and the completion of training tasks.