Accession Number:

ADA014998

Title:

Helicopter Fatigue Load and Life Determination Methods

Descriptive Note:

Final rept. Mar 1974-Mar 1975

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Report Date:

1975-08-01

Pagination or Media Count:

74.0

Abstract:

Fatigue life estimation of helicopter dynamic components is a complex process that is currently achieved through many different methods. The objective of this study was to review existing methods and to develop a standardized method that could be used by the Army for reliably predicting operational life. This report presents results of a detailed review of fatigue life methods used by five helicopter manufacturers as determined by site visits and literature reviews. Recommendations for a standardized method are presented in areas of mission spectra definition, flight strain survey techniques, laboratory fatigue strength characterization, and safe-life calculation procedures.

Subject Categories:

  • Helicopters
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE