COMPUTATIONAL STUDY OF THE ENVIRONMENTAL FATE OF SELECTED AIRCRAFT FUEL SYSTEM DEICING COMPOUNDS

The current fuel system icing inhibitor (FSII) additives used for comm ercial and military aircraft are ethylene glycol mono methyl ether (EG ME) and diethylene glycol mono methyl ether (DiEGME). Propylene glycol is used for wing deicing. Fuel deicing additives are required in mili tary fuels an optional in commercial fuels with wing deicing being wea ther dependent. The acetals and ketals of reduced sugars are being syn thesized and modeled computationally because they are less toxic and m ore environmentally benign than EGME and DiEGME. Each compound is bein g with an emphasis on deicing effectiveness, human toxicity, and envir onmental hazard. This paper reports on three compounds derived from th e sugar mannose.