| Abstract | The accurate measurement of fuel flow constitutes an important part of gas turbine performance assessment. Prompted by an international engine testing program, and the mandate to improve all aspects of gas turbine performance evaluation, the Engine Laboratory has critically examined the existing fuel flow measuring methods. The report describes all elements of the fuel flow measuring system in detail, with source documentation wherever possible. Since the laboratory employs turbine flowmeters exclusively, the discourse has been limited to that type of flow establishment. Together with an in-house ballistic flowmeter calibrator, and an up-to-date data acquisition and reduction computer system, the present Engine Laboratory fuel flow measuring system provides gas turbine fuel flow assessment of known accuracy. An error analysis, for normal operating conditions, indicated an uncertainty in corrected fuel flow of ±0.75%. Recommendations have been made for improvements in some measurement components. |
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