Aviation lubricants

Synthetic lubricants are made with neopentyl glycol in the base-stock polyester (24). Excellent thermal stabiHty and viscosity control are imparted to special high performance aviation lubricants by the inclusion of polyester thickening agents made from neopentyl glycol (25,26) (see LUBRICATION AND lubricants). Neopentyl glycol is also used to manufacture polymeric plasticizers that exhibit the improved thermal, hydrolytic, and uv stabiHty necessary for use in some exterior appHcations (27). 

Improved Protection of Magnesium Alloys Against Synthetic Aviation Lubrications at Elevated Temperatures, Rendu, Tawil SAE Paper 880869... 

Aviation oils The bulk of aviation lubricant demand is for both military and civilian gas turbine lubricants. Hydrocarbon oils cannot meet the requirements placed on jet engine oils, primarily lubrication, oxidation and ageing stability. Type 1, the first generation of oils were diesters but over the last 30 years have lost ground to the more expensive polyol esters. Type 2. Some diesters are still used in less demanding applications such as for small private aircraft and turbo-prop engines. Type 2 aviation gas turbine lubricants are produced to a viscosity of 5 cSt at lOO C but for some military applications where low-temperature operability is vital, this is reduced to 3 cSt. 

To simplify industrial lubricant classification, the names of lubricants such as bearing lubricants, compressor lubricants, hydraulic lubricants, gear lubricants, metalworking lubricants, etc., derive from their application. These classifications are consistent with other lubricant categories, i.e. lubricants for internal combustion engines, aviation lubricants and marine lubricants. 

SAE ARP 5996A. Evaluation of Coking Propensity of Aviation Lubricants Using the Hot Liquid Process Simulator (HLPS) Single Phase Flow Technique. SAE International. 

Goode M. (1999) Chemistry and History of TCP Usage in Aviation Lubricating. Health, Safety and Environmental Overview. Great Lakes Chemical Corp. Presented at SAE E-34 Technical Symposium, September 1999. 

ExxonMobil Lubricants and Petroleum Specialties Company is organized along eight discrete business lines Passenger Vehicle Lubricants, Commercial Vehicle Lubricants, Industrial Lubricants, Marine Lubricants, Aviation Lubricants, Basestocks, Petroleum Specialties (wax, process oils and so on), and Asphalt for roads and roofing. 

Rocketdyne, Division of North American Aviation, "Lubricants, Anti-Seize Compounds, and Gasketing Type Sealing Compounds for Rocket Engines," Process Specification No. RA 0112-002, Canoga Park. California (November 12, 1958). 

A. Zeman, H.P. Binder, Determination of spontaneous ignition temperatures (SITs) of aviation lubricants using pressure differential calorimetry (PDSC). Thermochim. Acta 98, 159-165 (1986)... 

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