Accession Number:

ADA091756

Title:

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

Descriptive Note:

Final rept. Aug 1978-Apr 1980

Corporate Author:

LORD KINEMATICS ERIE PA

Personal Author(s):

Report Date:

1980-04-01

Pagination or Media Count:

86.0

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 Miners cumulative damage theory is also conducted and reported. Author

Subject Categories:

  • Helicopters
  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE