UH-1 and AH-1 Helicopter Main Rotor Blade Failure and Scrap Rate Data Analysis

Abstract

This report presents the results of an investigation of the impact of the Army's operational environment on UH-1 and AH-1 series main rotor blades. Thirty-nine months of operational data for missions flown in the United States as well as in Southeast Asia under actual combat conditions were reviewed and reported. Blade failures are reported in terms of cause, frequency, repairability, and probability of blade scrappage following removal. The maintenance man-hours associated with each type of repair, the most forward area at which repairs may be accomplished, and the associated downtimes and support costs are reported. Repair, overhaul, and new blade costs are converted to operational costs in dollars per flight hour. The concepts of blades with a high degree of field repairability and 'throwaway' blades are discussed. Target new blade costs at which such concepts become cost effective are developed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1971
Accession Number
AD0881132

Entities

People

  • O. L. Hensley
  • P. V. Carr

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Transportation
  • Aircrafts
  • Combat Areas
  • Computer Programs
  • Contracts
  • Failure Mode And Effect Analysis
  • Foreign Object Damage
  • Governments
  • Helicopters
  • Maintenance
  • Manufacturing
  • Reliability
  • Southeast Asia
  • Surface Transportation
  • Test And Evaluation
  • United States
  • Warfare

Readers

  • Aerospace Engineering
  • Life Cycle Cost Analysis