The ATR72 was the first civil aircraft with a composite wing, to be certified JAR/FAR 25 (Joint Aviation Requirements/Federal Aviation Regulations). Using the latest developments composites ACJ 25603, AC20-107A comply with the requirements of JAR/FAR 25; the ATR72 composite outer wing box was certified by the DGAC in September 1989 and by FAA (Federal Aviation Administration) in December 1989. This paper deals with Aerospatiale's innovative approach, focusing on four major certification topics: the determination of allowables from statistical analysis substantiated by tests on cross-ply plain and notched laminates; the fatigue and damage tolerance substantiations performed by analysis to show the non-initiation of fatigue damage and by full-scale test for the no-growth of acceptable manufacturing defects and accidental damages; the development of a probabilistic approach to determine the inspection intervals for accidental impacts in damage-tolerance justifications; the compliance philosophy developed to qualify a second source material (approved by the company in 1992).


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    Title :

    Certification of the composite outer wing of the ATR72


    Additional title:

    Zertifizierung der äußeren Tragflächenverbundkonstruktion der ATR72


    Contributors:
    Tropis, A. (author) / Thomas, M. (author) / Bounie, J.L. (author) / Lafon, P. (author)


    Publication date :

    1995


    Size :

    13 Seiten, 14 Bilder, 15 Tabellen, 11 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Certification of the Composite Outer Wing of the ATR72

    Tropis, A / Thomas, M / Bounie, J L et al. | SAGE Publications | 1995




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