Breakdown of Preservative Fluid MIL-PRF-46170 in Aircraft Hydraulic Systems

Abstract

This document summarized a series of laboratory tests performed to identify material forming on hydraulic system filters of fleet aircraft. Additional information obtained from outside sources is also summarized for background. Laboratory pump testing showed rapid filter dogging with small amounts of preservative fluid (MU-PRF-46l70) in the system. Similar conditions with 100% hydraulic fluid (MIL-PRF-83282) did not clog filters at these rates. Preservative fluid at elevated temperatures showed breakdown, increase in acid number, and chemical attack of test coupons while hydraulic fluid alone does not degrade. Preservative fluid is not compatible with operating aircraft hydraulic systems.

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Document Details

Document Type
Technical Report
Publication Date
Mar 29, 2001
Accession Number
ADA389225

Entities

People

  • Jeffrey W. Moorman

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerial Warfare
  • Air Force
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Backup Systems
  • Control Systems
  • Fighter Aircraft
  • Hydraulic Fluids
  • Leading Edge Flaps
  • Leading Edges
  • Materials
  • Military Aircraft
  • Navy Aircraft
  • Organic Materials
  • Particles
  • Transport Aircraft

Readers

  • Materials Science and Engineering.
  • Petroleum Engineering