The high intensity radiated fields (HIRF) certification process as currently implemented is comprised of an inconsistent combination of factors that tend to emphasize worst case scenarios in assessing commercial airplane certification requirements. By examining these factors which include the process definition, the external HIRF environment, the aircraft coupling and corresponding internal fields, and methods of measuring equipment susceptibilities, activities leading to an approach to appraising airplane vulnerability to HIRF are proposed. This approach utilizes technically based criteria to evaluate the nature of the threat, including the probability of encountering the external HIRF environment. No single test or analytic method comprehensively addresses the full HIRF threat frequency spectrum. Additional tools such as statistical methods must be adopted to arrive at more realistic requirements to reflect commercial aircraft vulnerability to the HIRF threat. Test and analytic data are provided to support the conclusions of this report. This work was performed under NASA contract NAS1-19360, Task 52.
Consistent Approach to Describing Aircraft HIRF Protection
1995
93 pages
Report
No indication
English
Transportation Safety , Air Transportation , Aircraft hazards , Certification , Commercial aircraft , Electromagnetic fields , Radiation effects , Radiation protection , Threat evaluation , Finite difference theory , Finite element method , Maxwell equation , Method of moments , Statistical analysis , Vulnerability
AIRCRAFT CERTIFICATION: HIRF PROTECTION REQUIREMENTS FOR CIVIL AIRCRAFT SYSTEMS
SAE Technical Papers | 1990
|Aircraft and Subsystem Level HIRF Test Methods
SAE Technical Papers | 1990
|IEEE | 1993
|British Library Conference Proceedings | 1993
|