Accession Number : ADP000017

Title :   Mechanics Problems in Composite Main Rotor Blade Design,

Corporate Author : ARMY RESEARCH AND TECHNOLOGY LABS MOFFETT FIELD CA

Personal Author(s) : Foye,R. L. ; Baker,D. J. ; Petrie,S. P. ; King,A. O.

Report Date : SEP 1982

Pagination or Media Count : 25

Abstract : Over 50 all-composite helicopter main blades have been designed to date. More than 15 of these have reached either limited or full production status. Eight others are approaching production. This paper reviews the different design concepts and analyses that have been applied to many of these blades. Various design and analytical solutions to the problems of root end and drag link attachments, spar and blade transition sections, and tip weight and tip cap attachments are described. (Author)

Descriptors :   *Rotor blades, *Composite materials, *Mechanical properties, Helicopters, Experimental design, Structural analysis, Finite element analysis, Stresses, Failure(Mechanics), Fatigue(Mechanics), Shear properties, Stress concentration, Equations, Fractography, X rays

Subject Categories : Helicopters
      Laminates and Composite Materials
      Statistics and Probability
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE