Safety Considerations for Electrified Propulsion Aircraft
ARP8677
This SAE Aerospace Recommended Practice (ARP) discusses particularities to be considered when performing the safety assessment of electrified propulsion aircraft. Its main focuses are:
• The failure modes of electrified propulsion components
• Methods to evaluate failure rates of electrified propulsion components
• Effects of failures on example electrified propulsion system and aircraft architectures
• Particular risks, common causes, and zonal considerations specific to electrified propulsion
The guidance in this document may be used to generate inputs for system and aircraft safety assessment activities.
Rationale: While it is considered that existing system safety assessment methodologies are appropriate to assess the safety of electrified propulsion aircraft, the adequate deployment of such methodologies requires an understanding of the novelties introduced by electrification. Furthermore, some of the safety demonstration methods typically deployed for gas turbine and piston engine aircraft propulsion may not be adequate for electrified propulsion.
