AMRL Evaluation of the JP-8+100 Jet Fuel Thermal Stability Additive
Abstract
An additive package designed to improve thermal stability of jet fuel by 1000 F (^38 C), known as the JP8+100 additive, or more commonly as the USAF-developed JP8+1OO thermal stability additive, was evaluated to investigate its efficacy in reduction of thermal deposits formed in aircraft fuel systems. The additive was claimed to reduce deposits generated on fuel-wetted metal surfaces by up to 90%. An AED-designed rig capable of quantitatively evaluating jet fuel thermal stability was used to investigate jet fuels produced by different Australian refineries with various fuel finishing processes. The additive's effect on deposit formation from these fuels was investigated over a range of temperatures and fuel flow conditions giving both total deposit formation data and profiles of carbon and sulphur deposition on heat stressed, fuel-wetted steel tubing. This fuel additive is to be introduced into kAAF aircraft fuel systems that may have substantial levels of existing thermal deposit. An important consideration was thus the additive's ability to clean dirty fuel-wetted surfaces and the possibility of 'clumps' of deposit being washed into the fuel system. Levels of filterable deposit washed from a pre-deposited test section were monitored and the deposit levels were found to fall below levels generated in non-additised fuel. The +100 additive was found to substantially reduce the levels of carbonaceous deposit formed on hot metal fuel-wetted surfaces and performed as claimed in its ability to clean pre-deposited fuel wetted metal surfaces.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2001
- Accession Number
- ADA396761
Entities
People
- Paul Rawson
Organizations
- Defence Science and Technology Group