Structural and Functional Quality Control Model of Led Light Sources Used in Small Spacecrafts

The work is devoted to the development and justification of a structural and functional model for quality control of LED light sources used for small CubeSat spacecraft and methods for its application, taking into account the multifactorial nature of LED light sources and the extreme operating conditions of small spacecraft. Based on a comparative analysis of lighting and aerospace open regulatory documentation, methodological gaps have been identified: the lack of an end-to-end procedure for assessing the suitability (qualification) of LED light sources, the limited applicability of earth-based models for predicting the degradation of product light characteristics in relation to possible long-term space missions of small spacecraft, as well as the limited relevance of selective statistical control, which is characteristic of small spacecrafts. As a solution, a structural-functional model for quality control of LED light sources used for small spacecrafts is proposed, built on the principles of the V-model, where each stage of development on the left side of the letter V (from requirements to detailed design) has a corresponding testing and verification/validation stage on the right side (from component to acceptance testing), ensuring early test planning, strict quality control, and compliance with requirements, but low flexibility. The results of the study form the basis for the development of new approaches to conrol the quality of semiconductor light sources used in aerospace systems.