The Effect of PHM Technologies on Aerocraft Operational Integrity

Aerocraft operational integrity (AOI) is a fundamental requirement for aerocraft operational suitability (AOS) and aerocraft operational effectiveness (AOE), and it provides a more comprehensive overview of the general quality characteristics of an aerocraft. Prognosis and Health Monitoring (PHM) technologies are widely used in aerocraft systems. This paper briefly introduces the basic concept and expression methods of aerocraft operational integrity and some of the basic PHM technologies. The paper then analyzes in detail the mechanisms by which PHM technologies improve aerocraft operational integrity, including how they improve the degree of aerocraft operational integrity, inherent readiness rate, and inherent health degree. Finally, the paper presents the improvement processes of aerocraft operational integrity based on PHM technologies, which follow aerocraft health state analyses, residual service life prediction, and maintenance decisions.