The stmcture features and main manufacturing points of a single—ridge waveguide slotted array antenna are analyzed．Based on this，a precise manufacturing procedure involving various specialized technologies is brought up．And the critical technical measures for the process are also explained．

An ultmsonic testing method for solid propellant of mcket engine is studied．The principle of ultrasonic feature scan imaging and the method of defect testing are presented．The ultrasonic feature scan imaging system for solid propellant is developed and the solid propellant is tested by using low-frequency combined transducers．The experiment shows that the ultrasonic feature scan imaging system can demonsttate the defects of solid propellant successfully by adopting amplitude imaging and depth imaging．

Because of the complexity of aircraft SMCs (sheet metal components)，there is no suitable pubilc domain software available for its FPD (flat pattem development)．The special features of aircraft SMCs are analyzed．An automated FPD system for aircraft SMCs based on CATIA is designed and developed．A set of unique development algorithm comprising of normal cross-section and joggle development techniques is provided．An example is given to illustrate the development of the component．

The characteristics of aerial weapon equipment project are analyzed and the design principle of the process evaluation index system for aerial weapon equipment project is put forward．According to the related knowledge of project management，the process evaluation index system for aerial weapon equipment project is presented and the steps to determine the weight of the index system are discussed by means of using grey relating theory．