Lubrication System Failure Baseline Testing on an Aerospace Quality Gear Mesh

Abstract

Aerospace drive systems are required to survive a loss-of-lubrication test for qualification. In many cases emergency lubrication systems need to be designed and utilized to permit the drive system to pass this difficult requirement. The weight of emergency systems can adversely affect the mission capabilities of the aircraft. The possibility to reduce the emergency system weight through the use of mist lubrication will be described. Mist lubrication involves the delivery of a minute amount of an organic liquid as a vapor or fine mist in flowing compressed air to rubbing surfaces. At the rubbing surface, the vapor or must reacts to form a solid lubricating film. The aim of this study was to establish a baseline for gear behavior under oil depleted conditions. A reactive vapor-mist lubrication method is described and proposed as a candidate emergency lubrication system.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2000
Accession Number
ADA378073

Entities

People

  • Robert F. Handschuh
  • Wilfredo Morales

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Compressed Air
  • Energy
  • Engineering
  • Failure Mode And Effect Analysis
  • Fatigue Tests (Mechanics)
  • Films
  • Friction
  • Gear Teeth
  • Gears
  • Heat Energy
  • Liquids
  • Lubricants
  • Lubricating Films
  • Lubrication
  • Materials
  • Test Facilities

Fields of Study

  • Engineering

Readers

  • Emergency Management and Homeland Security.
  • Environmental Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Space