It is the philosophy of the present airworthiness regulations for airplane design to define the expected loads during operation in terms of limit loads. The required margin of safety between these limit loads and the ultimate loads has until now been covered by a factor of safety of 1. 5. The proposal is made to rethink the philosophy of having a fixed factor of safety, taking into account the probability of load occurrences and variations in the properties of materials. The load level of limited loads or of extremely rare occurrences could then be defined as maximum loads with a lower factor of safety. Three possible methods of predicting maximum loads are proposed.

  • Supplemental Notes:
    • AGARD Rep N661, Factors of Safety Historical Development, State of the Art and Future Outlook, paper presented at 43rd, 44th and 45th Meeting and Technical Address given at 44th Meeting of Structure and Materials Panel of AGARD 1977.
  • Corporate Authors:

    Advisory Group Aerospace Research and Development

    7 Rue Ancelle
    92 Neuilly-sur-Seine,   France 
  • Authors:
    • Struck, H
  • Publication Date: 1977

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00177431
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Jul 29 1978 12:00AM