Materials (Lightweight Materials and Alloys).
Lightweight materials and alloys have continuously improved in the ratio of weight to load carrying capacity over past generations of aircraft, and this trend is expected to continue and diversify for development of future. The use of new alloys requires processes that are closely linked to the load alleviation technology mentioned above. Structures addressing the types of loads and necessary characteristics of materials will be Produced as “designed composite materials” in place of past reliance on available“raw” materials.
Important guidance for this effort is provided in the latest revision of SAE document ARP 475 (Guidelines for Development of Civil Aircraft and Systems) and ARP 476124 (Guidelines and Methods for Conducting the Safety Assessment Process on Civil Airborne Systems and Equipment).
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