CAJ | 학술논문

在航空发动机性能和工作特性试飞中，燃油流量的准确测量对发动机工作指标和性能计算有着重要的影响。和传统单转子流量计相比，双转子燃油流量计有响应更快、重复性好、精度高、量程更宽广等优点，被广泛地应用在航空领域。通常，航空发动机由于安装空间的原因，燃油流量计的进出口平直段难以满足整流的需要。因此，需要装机后对燃油流量计再次进行校准。本文通过标准流量台对安装试验件的某型双转子流量计进行校准，将试验结果与厂家提供的校准曲线进行对比，发现有一定的偏差。通过对校准结果的不确定度合成，其结果小于2‰。还得到了K因子校准特性曲线图，为双转子流量计的工程应用提供了技术支持。
재항공발동궤성능화공작특성시비중，연유류량적준학측량대발동궤공작지표화성능계산유착중요적영향。화전통단전자류량계상비，쌍전자연유류량계유향응경쾌、중복성호、정도고、량정경관엄등우점，피엄범지응용재항공영역。통상，항공발동궤유우안장공간적원인，연유류량계적진출구평직단난이만족정류적수요。인차，수요장궤후대연유류량계재차진행교준。본문통과표준류량태대안장시험건적모형쌍전자류량계진행교준，장시험결과여엄가제공적교준곡선진행대비，발현유일정적편차。통과대교준결과적불학정도합성，기결과소우2‰。환득도료K인자교준특성곡선도，위쌍전자류량계적공정응용제공료기술지지。
In the flight test of aeroengine performance and operating characteristics,the accurate measurement of fuel flow has important effect on the aeroengine performance measurement and performance calculation.Compared with other types of traditional flowmeters,dual-rotor turbine flowmeter has many merits,such as faster response,good repeatability,higher accuracy,wider range,etc.and is widely used in the field of aviation.Usually,due to the installation space of the areoengine,the straight section of inlet and outlet of fuel flowmeter is difficult to meet the rectifi-cation requirements,and needs to be calibrated after installed.The standard test table is used to calibrate a certain type of dual-rotor turbine flowmeter.The calibration test results are compared with the results provided by the manufacturers,and it is found that there is a certain deviation. The synthesized uncertainty of calibration results is less than 0.2%.The K-factor characteristic curve is obtained,which provides technical support for the engineering application of dual-rotor turbine flowmeter.