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Airworthiness Tools and Processes for Complex Rotorcraft Systems Safety

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Applied Vehicle Technology

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From previous publications, and especially during the AVT-245 RSM, the scientific community is recommending being able to make progress in the following thematic areas: •Multi-core Processor Airworthiness Standards •Structural Integrity Standards •Identification and Elimination of Safety / Human Factors Issues Early in the Design •Maturation / Exploration of Model Based Systems Engineering (MBSE) •Alignment of Airworthiness and Acquisition Process Certification of complex systems, using current approaches, is challenging because of the increasingly large areas of uncertainty in behavior ranging from the sub-system non-determinism of multicore processors, through intelligent systems to the emergent properties of complex system of systems. Additionally, future systems may include adaptive behaviors that may be impossible to assure at design-time. Multiple nations are looking at ways to address these hardware and software related challenges through open systems, architecture design / analysis, simulation, and testing. The Research Task Group (RTG) objectives and road-map is prepared and presented by the ET-178 “Airworthiness Strategies for Rotorcraft Complex Systems; Including Mixed Cyber-Physical Systems”.


The RTG group shall develop proposed common guidelines and methodologies using Civil approaches where possible to produce a military optimal process. The study will cover: o Common problems and certification challenges o Certification strategy and methodology o Existing state of art strategy, tools and processes o Technology investment and development efforts The frame of the analysis is limited to Rotorcraft and VTOL application, Manned / Optionally Piloted Vehicles, considering classic (Legacy) and Hybrid Electric Propulsion. This domain is currently in a dynamic evolution on the military side, with the JMR program and the development of new platforms targeting high speeds (> 400km/h). The expected outputs of the RTG are to gather arguments that will support Regulatory Body understanding and facilitate the removal of existing barriers; to promote the use of validated tools to ease the burden of certification and documentation processes. The Group will edit a report on the technology status and expected mid and long term (2035) perspectives. The report should support discussions on the direction of future tool developments/implementation.


The study will cover: o Common problems and certification challenges, to be considering NATO standards processes o Certification strategy and methodology o state of art with respect to Model Based tools for Architecture Centric Virtual Validation of Safety, o Technology investment identified to go further in tools development or validation and identification of development efforts o TRL at the end of the RTG activity should be at level 3-4 and the recommendations should target to have at 2035 fully developed and applicable tools.

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