| Citation: | MIAO Lei, ZHAO Zhongliang, LI Hao, et al. Development and application of virtual flight balance measurement device for aircraft with lateral jet[J]. Journal of Aerospace Power, 2024, 39（6）：20230384 doi: 10.13224/j.cnki.jasp.20230384
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To meet the requirements of virtual flight wind tunnel testing for aircraft with lateral jet, the measurement device composed of two independent four-component wind tunnel balances, transmission shaft and supporting crossbeam, etc, was applied to respectively measure the aerodynamic loads of the front/rear two parts model at the same time. By finite element software, the sensitivity of each balance, the interference of transmission shaft and the influence of high-pressure gas on balance were analyzed. The results showed that the transmission shaft had little effect on the force component of the balance, the interference on the pitch moment was about 2.5% and that on the yaw moment was 8%, the impact of pressure on the front balance was less than 2% and that on the rear balance was less than 9%. Based on the static calibration formula of each balance, an aerodynamic load calculation method suitable for measurement device was generated. The correctness of the method was verified through simulated loading. Finally, the performance of the measurement device for aircraft with lateral jet was verified through the wind tunnel tests. The results of static calibration and wind tunnel tests showed that static calibration data were consistent with finite element analysis results, the measurement device had stable performance and accurate measurement values, so it can meet the requirements of virtual flight test research.
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