Tradeoff Study for Extended Life Helicopter Transmission

Abstract

The report presents the results of a design tradeoff study conducted to determine the operational cost impact of extending and overhaul life of the drive train components from 1200 hours to 3000 and 6000 hours on future Army helicopters. Pertinent Army and BHC publications were reviewed to determine time between overhaul (TBO) limiting factors. An analytical review was also made of a mission profile study conducted on monitored AH-1G, UH-1H, and UH-1C helicopters in Viet Nam to determine an appropriate usage rate, power spectrum, and flight length spectrum for this study.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1972
Accession Number
AD0758465

Entities

People

  • Charles W. Bowen
  • Richard D. Walker

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Airframes
  • Aluminum Alloys
  • Ball Bearings
  • Bearings
  • Cutters
  • Detection
  • Failure Mode And Effect Analysis
  • Friction
  • Geometry
  • Lubricants
  • Lubrication
  • Materials
  • Reliability
  • Roller Bearings
  • Shear Stresses
  • Thin Films

Readers

  • Aerospace Engineering
  • Military Science