Service Life Determination for the UH-60A (UTTAS) Helicopter Elastomeric Bearings

Abstract

A method for predicting the endurance life of the elastomeric bearings on the UTTAS helicopter rotor is presented. The critical layers, based on elastomer strain, are determined analytically for these two bearings. Representative standard laboratory test specimens, bonded with the specified elastomers are subjected to the same static and typical dynamic strains, and tested to failure. Two resulting S-N curves are reported, one for each of the two rotor elastomeric bearings. A short verification of Miner's cumulative damage theory is also conducted and reported. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1980
Accession Number
ADA091756

Entities

People

  • Ernest P. Gaudette

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Actuators
  • Air Force
  • Aircrafts
  • Army Aviation
  • Computer Programs
  • Engineering
  • Failure Mode And Effect Analysis
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Finite Element Analysis
  • Geometry
  • Materials
  • Mechanics
  • Natural Rubber
  • New Jersey
  • Remotely Piloted Vehicles
  • Test And Evaluation

Readers

  • Aerospace Engineering
  • Structural Health Monitoring of Composite Structures.
  • Surface Coatings Technology.