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为满足某飞机部件高速风洞测力试验的需要,研制了四台部件测力天平,用来同时测量飞机机翼不同部件(全翼、外翼、翼尖弹、弹架组合)所受的气动载荷。由于是全模试验,天平的设计载荷不匹配,安装空间极度受限。设计时,全翼天平采用了机身中部安装方案、外翼天平与机翼加工成一体并且采用了新型多柱梁结构;翼尖弹天平和弹架组合天平采用了杆式天平方案。上述措施不仅满足了天平的测量需要,也确保了天平在模型中的安装位置以及测力的有效性。该部件测力试验已经在中国空气动力研究与发展中心FL-26风洞完成。试验结果表明,天平测力结果准确可靠,精准度高,达到了预期的目标。
In order to meet the need of high-speed wind tunnel force test of a certain aircraft component, four component force balances were developed to simultaneously measure the different components (all wings, outer wings, wing tips and bombs) of the aircraft wings Pneumatic load. Because it is a full-scale test, the design load of the balance does not match and the installation space is extremely limited. The design of the all-wing balance with the central fuselage installation program, outer wing balance and wing processing into one and the use of a new multi-column beam structure; wingtip balance and cartridge combination balance with rod balance program. These measures not only meet the measurement needs of the balance, but also to ensure that the balance in the model of the installation location and the validity of force measurement. The component force test has been completed at the China Aerodynamic Research and Development Center FL-26 wind tunnel. The test results show that the balance force measurement results are accurate and reliable, high precision, and achieve the expected goal.