In response to erroneous dropping of external stores on the dropping mechanism of aeronautical weapons

finite element technique is adopted to conduct analysis to the hook

sector rocker and sector wheel

and fundamental reasons for it are found out

and the installation method of a sub-mechanism is put forward to without changing the structure of the dropping device. The sub-mechanism applicable in micro spaces is designed with computer-aided 3-dimension motion analysis and interference detection techniques.Structural stability of the sub-mechanism is studied in aspects of dropping sequence

energy requirements

rigidity and intensity of the stop as well as thermo-elasticity with computer-aided statics

dynamics

thermo-elasticity and stability engineering analysis (CAE) techniques. Results of calculations

experiments and aerial embarkation flights show that

the theoretical power value consumed by the stop is 10 w

and measured value is 14w; the measured value of tripping voltage is 7V

and the theoretical value of the time sequence is 0.0038s

greatly less than the performance index of the dropping device itself. The sub-mechanism acts safely and reliably

and avoids mutual interference between all moving accessories of the main body

which provides evidence for engineering application.