Accession Number : ADA131945

Title :   Advanced Chemical Characterization and Physical Properties of Eleven Lubricants.

Descriptive Note : Interim rept. Aug 82-Feb 83,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX ARMY FUELS AND LUBRICANTS RESEARCH LAB

Personal Author(s) : Present,David L ; Newman,Frank M ; Tyler,John C ; Cuellar,J Pat

PDF Url : ADA131945

Report Date : Mar 1983

Pagination or Media Count : 137

Abstract : Lubricants used in the power trains of helicopter transmissions have required standard tests, such as ASTM-designated methods, definitizing required physical and chemical properties. These initial properties and their subsequent service life variations or degradations, whether causation is internal or external, affect service performance. In order to advance the state-of-the-art lubricant performance predications, tests in the regimes of friction, wear, high-pressure viscosity, particulate contamination and others are now part of standard practice techniques available. Along with these tests, a third generation chemical characterization technique has now been developed which is fast, efficient, accurate, and requires only milligram sample amounts with a minimum of processing. This technique yields accurate compositional data of ester-type lubricants and some antioxidant additives. Other metal-type additives are determined by a combination of Infrared Spectroscopy and boiling point distribution by gas chromatography. (Author)

Descriptors :   *Lubricants, *Oils, *Transmissions(Mechanical), *Helicopters, *Physical properties, *Mechanical properties, *Friction, *Wear, Chemical properties, Gas chromatography, Infrared spectroscopy, Additives, Esters, Antioxidants, Boiling point, Contamination, Particulates, Viscosity, High pressure, State of the art, Performance(Engineering), Chemical composition, Test and evaluation, Life expectancy(Service life), Reliability, Maintenance, Operational effectiveness, Cost effectiveness

Subject Categories : Helicopters
      Organic Chemistry
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE