The article is devoted to the issues of product requirements management and product quality management in the aerospace industry. The relevance of the topic of requirements management and product quality is shown. The necessity of developing a model containing a formalized requirements management process with implemented quality management procedures is substantiated. The purpose of the research is to highlight the properties of the tasks of managing requirements for products and managing product quality and establishing the relationship between them. The tasks of managing requirements for products are considered on the example of designing a product as a key stage in the formation of requirements for manufactured products. The analysis of the tasks of product quality management is based on the process of quality control of manufactured products, as the process of establishing compliance the actual values of the parameters that describe the product with the requirements for this product. The article presents the structure and properties of the tasks of requirements management systems for products and product quality management based on the tandem model, the rules for the interaction of model elements are also given, and the place of tasks of quality management systems in solving the tasks of the requirements management system is established. The specifics of the key tasks of each of the systems are considered. The relationship between the tasks of quality management and product requirements management using the apparatus of tandem models is shown. The model of representation of the requirements management system and the product quality management system proposed in this article suggests the establishment of boundaries between the processes of these systems. The use of the apparatus of tandem models makes it possible to guarantee compliance with all requirements formed in the process of functioning of quality management and requirements management systems. The results obtained can be used to further formalization of quality management processes in order to form a methodology for designing a digital product quality management system in the aerospace industry.