Accession Number : AD0864828

Title :   Evaluation of the AEL Free Water Detector for Accuracy of Ratings.

Descriptive Note : Interim technical rept. 2 Dec 68-31 Jul 69,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX

Personal Author(s) : Johnston, Robert K. ; Brown, Robert D. ; Fernandez, Frank, Jr

Report Date : DEC 1969

Pagination or Media Count : 41

Abstract : The accuracy of the Aeronautical Engine Laboratory (AEL) free water detector results was evaluated on samples on JP-5 fuel with controlled free water content, prepared in a 20-gpm pumping loop and in a batch-blending system. In the loop tests, AEL ratings were unaffected by fuel flow variables or sampling time but were affected by sample size and sampling method. Ratings on 500-ml line samples were about three times the amounts of water injected. In the batch-blending system, ratings on 500-ml samples were about twice the amounts of water injected in closed-system operations. When moisture exchange between fuel and atmosphere was permitted, the numerical agreement between ratings and water contents was closer, as would be expected since the AEL standards were established on that basis. Closed-system sample ratings were affected linearly by sample volume, with 275 ml giving the best agreement of AEL rating and water content. Results on inhibited fuels were less clear-cut. (Author)

Descriptors :   *DETECTION), (*JET ENGINE FUELS, WATER), (*WATER, FLUORESCENCE, CHEMICAL CONTAMINATION, FUEL ADDITIVES.

Subject Categories : Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE