In response to the problem of low first pass rate in the selection of jet disc components for biased jet servo valves,this article first identified the main cause of low first pass rate in the selection of jet disc components through stratified investigation,statistics,and analysis.Subsequently,a causal analysis was conducted using the correlation graph analysis method to identify the main factors affecting the first pass rate of screening.Finally,targeted measures were formulated and implemented to optimize the production process of jet disk components,which achieves the goal of the measures.During the effectiveness inspection,the first pass rate of jet disk component screening was significantly improved.
NASA has released a new version of the safety program requirements and technical handbook,established a new safety system framework.The new safety system clarified the safety responsibilities of the acquirers and the contractors,optimized the guiding principles and methods for the demonstration of safety objectives and requirements,integrated the safety analysis methods,and clarified the relationship among demonstration,program management,product design,and major adjustments have been made to the safety verification methods.It is required to adopt systematic and structured safety verification methods to comprehensively verify the implementation of various safety requirements.At the same time,it also updates the safety procedures at each stage during the life cycle.Great improvement of safety has been made for aerospace products of NASA by the development and implementation of the new safety system.The above aspects are worthy of reference for the domestic aerospace industry to optimize the safety system of the aerospace industry.
According to the Satellite-equipped product characteristics on space,the product assurance practices for Camera Subsystem of a Satellite-equipped are summarized.Quality control is carried out in the four stages of product design,manufacture,experiment,acceptance and delivery,the important product guarantee of technology state change control and product data packet planning on this basis are extracted.The above measures effectively improve the product quality and achieve quantitative management of product assurance,which provides a reference for the follow-up product assurance of Camera Subsystem.
CSS Solar Array,as an application object,and the effective control of the quality of product design,as the goal,Top-Down design of QFD is utilized to transform the customer requirements to function decomposition,hardware decomposition,index decomposition,detailed design of the system,detailed design of the components,and key characteristics of the parts.Also,the optimal engineering solution is explored via an iterative optimization of PDCA.At the same time,the reverse analysis of FMEA is used to identify weak links,such as key features of products,technical risks and single point/immeasurability,strengthen reliable design like margin and redundancy,and it guides the formulation of the whole process quality control measures.Through the method of forward and reverse collaborative design analysis,the engineering optimization of design is realized,the source control of design quality oriented to the product life cycle is realized,and the reliability of products is continuously improved.
In order to effectively implement the regulations on the quality management of equipment and the lifelong accountability system for equipment quality responsibility,and establish a sound quality responsibility system,a complete set of methods has been proposed.These methods which under the construction environment of the New Era Equipment Construction Quality Management System(NQMS)include a quality responsibility system construction model,construction structure,responsibility recognition,responsibility weight distribution,and reward and punishment requirements.The contents of the methods have been practiced and achieved the expected results,and are a useful guideline for the step-by-step implementation of quality responsibility in equipment manufacturing units.
