THE performance of a gas turbine fuel can be estimated most conveniently by using a single combustion chamber test unit. Such fuel testing has often shown a lack of repeatability that is difficult to ascribe to normal experimental errors only. In reviewing possible sources of error, the uncontrolled variable of atmospheric humidity has been considered. From past records the average specific humidity in the British Isles is 0·006 lb. water per lb. of dry air while the maximum on any day is unlikely to exceed 0·020 lb. water per lb. of dry air.
Mackenzie, K.J. and Boddy, J.H. (1951), "Fuel Testing in Gas‐Turbines: Some Effects of Atmospheric Humidity on the Operation of Combustion Chambers Used for Fuel Testing", Aircraft Engineering and Aerospace Technology, Vol. 23 No. 2, pp. 40-42. https://doi.org/10.1108/eb031997
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