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| Hazard Effects of Atmospheric Radiation Environment on Avionics |
| Received:March 05, 2019 Revised:April 30, 2019 |
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| DOI：10.7643/issn.1672-9242.2019.09.020 |
| KeyWord:avionics atmospheric radiation neutron neutron induced single event effect soft error rate |
| Author | Institution |
| CHEN Yu |
AVIC China Aero-polytechonlogy Establishment, Beijing , China;Key Laboratory of Quality Infrastructure Efficacy Research, AQSIQ, Beijing , China |
| LI Ming |
AVIC China Aero-polytechonlogy Establishment, Beijing , China;Key Laboratory of Quality Infrastructure Efficacy Research, AQSIQ, Beijing , China |
| FU Yun |
AVIC China Aero-polytechonlogy Establishment, Beijing , China;Key Laboratory of Quality Infrastructure Efficacy Research, AQSIQ, Beijing , China |
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| Abstract: |
| Objective To investigate the hazard effects of atmospheric radiation environment on avionics at typical civil flight altitudes (8 000 m to 12 000 m). Methods The 14 MeV high-energy neutron source was used to conduct irradiation tests on CPU, DSP, FPGA and memory for avionics. The single event effect sensitivity of each test piece was obtained. The typical value (6000 n/(cm2.s)) of the atmospheric neutron flux at the altitude of civil aviation was adopted to estimate the single event effect rate of typical avionics at cruising altitude. Results The avionics would cause a single particle effect of atmospheric radiation within about 900 hours. Conclusion Under the premise of not taking targeted protective measures, the single event effect induced by atmospheric neutrons will seriously affect the reliability and maintainability of avionics and even endanger flight safety. |
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