Helicopter Fatigue Load and Life Determination Methods

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.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1975
Accession Number
ADA014998

Entities

People

  • Alan P. Berens
  • George J. Roth
  • John P. Ryan
  • Richard G. Coy

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Center Of Gravity
  • Computational Science
  • Data Science
  • Failure Mode And Effect Analysis
  • Fatigue Tests (Mechanics)
  • Flight Loads
  • Information Science
  • Instrumentation
  • Literature Surveys
  • Load Distribution
  • Mechanics
  • Standards
  • Statistics
  • Surveys
  • Test And Evaluation
  • Test Methods

Readers

  • Aerospace Engineering
  • Instructional Design and Training Evaluation.
  • Materials Science and Engineering.