Multi-wheel gear assemblies of future aircraft are not compatible with pavements rated in the ACN-PCN system given by the International Civil Aviation Organization (ICAO). The Aircraft Classification Number (ACN) or the aircrafts detriment exceeds the Pavement Classification Number (PCN) representing the pavements load bearing capacity. This problem is especially relevant to flexible pavements on an ultralow subgrade strength. The paper discusses the structural detriment of multi-wheel gear assemblies of B747-400 and B777 aircraft in relation to their ACN. The impact of the loads is evaluated by means of a BISAR multi- layer analysis. Based on these computations and by taking ICAO's ACN for B747-400 as a reference, an estimation of B777's ACN has been made. For the covering abstract of the proceedings see IRRD 864230.


  • English

Media Info

  • Features: References;
  • Pagination: p. 61-75

Subject/Index Terms

Filing Info

  • Accession Number: 00663393
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-87262-925-2
  • Files: ITRD
  • Created Date: Aug 24 1994 12:00AM