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mocoup1eswere10catedatthecente1'ofthetray.The tern.peraturemeasuredbytheIR-HImethodandthe thermocouplesis35oCand33oCat2.5m m30oC， and 28.3oC at 4.6m m，and 25oC and 25oC at 7.5m mabovethefue1surface，respective1y.Thedif- ferenceinmeasuredtempe1'aturebetweentheIR-HI methodandthethermocoup1esdeceasesasthezin- creases.ThediscrepancybetweentheIR-HInlethod andthethermocoup1esexistsbecausetheeachtem- peraturepro五1eisindependent1ymeasuredbyther- mocoup1esandtheIR-HImethod，respective1y，and theprofi1esarelilsteadyduetoairdraftoverthefue1 tray.
6. Conclusions
A newoptica1systemthatcombinestheIRther- mography method with the ho1ography interfer- ometer method has been developed. This IR-HI method，hasbeenusedtosimultaneous1ymeasure the transient 2D temperature and concentration p1'ofilesofthefuelvaporformedaboveavo1atilefuel surface.Theestimatedaccuracyofthismethodisa maximumof30%forn-propanolat40oC，andthe copperblocktemperatureis120oC.Themaximum concentrationerorisoftheorderof300%，andthe temperatureero1' isapproximately40%fordual wavelengthholographicinterferometryifthereading precisionisachievedwithin10%(i.e.aspecialreso- lutionof20μmisnecessaryasamicroscopicmea- surement). The measured concentration using the IR-HImethodagreesfairlywelwiththetheoretical results.ThediscrepancybetweentheIR-HImethod andthethennocouplesexistsbecauseeachtempera- tureprofileisindependentlymeasuredbythether- mocouplesandtheIR-HImethod，respective1y，and theprofi1esareunsteadyduetoairdraftoverthefue1 tray.
ThisresearchwassupportedbytheNASAOficeof Bio10gicalandPhysicalResearch，CombustionSci- ence and Chemically Reacting Systems Program (NAG3-2567).
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