Development of a Single Hydraulic Fluid for Use in Army Ground Equipment

Abstract

A polyalphaolefin/ester-based fire resistant hydraulic fluid was developed to replace three existing military specification fluids currently used by Army equipment. The single hydraulic fluid (SHF) combines the low temperature operability exhibited by MIL-H-5606 (OHA) and MIL-H-6083 (OHT) with the fire resistance exhibited by MIL-H-46170 (FRH). SHF provides low temperature viscosities of 3500 cSt maximum at -54 deg C, a flash point of 180 deg C minimum, a minimum elastomer swell of 19% for NBR-L rubber, a maximum operating temperature of 135 deg C, and significantly improved corrosion protection. SHF eliminates the use of barium and tricresyl phosphate (TCP) which removes the toxic and environmental hazard restrictions of the current military specification fluids. The developmental formulations meet all performance requirements targeted for a single Army hydraulic fluid. Candidate fluids are currently being tested in armor and artillery as a final evaluation before transitioning of the fluid to the military supply system.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1993
Accession Number
ADA274590

Entities

People

  • Ellen M. Purdy

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Armored Vehicles
  • Army Equipment
  • Chemical Synthesis
  • Corrosion Inhibition
  • Engineering
  • Fires
  • Flash Point
  • Humidity Cabinets
  • Low Temperature
  • Materials
  • Military Research
  • Military Supplies
  • Research Facilities
  • Standards
  • Test And Evaluation
  • Warfare

Fields of Study

  • Engineering

Readers

  • Internal Combustion Engine (ICE) Technology.
  • Military Science
  • Polymer Science and Engineering.