摘要
2.4m×2.4m跨声速风洞半模测力天平载荷大且极不匹配,在设计上,采用了串联结构,分三个元件段,分别测量轴向力A与偏航力矩Na、俯仰力矩M及法向力N与滚转力矩L分量,在元件与元件之间安排有35mm长的等直段,有效地防止各分量间的相互干扰。专门设计的加载头,刚度极好,保证了天平校准与风洞试验的一致性,提高了风洞试验数据的可靠性。于2002年5月完成了型号试验,试验结果与荷兰的HST风洞的试验结果的一直性较好,半模测力天平的成功研制填补了我国大风洞半模型测力试验的空白。
The load of the half model balance in the 2.4 m × 2.4 m transonic wind tunnel is very heavy and doesn't match with components. In structure design, the half model balance adopts a serial connection, with three component sections, to measure components of A and N (yawing moment), M and N (normal force) and L. Among the components, an equal diameter section (35 mm) is designed to avoid the component interference. A special loader is designed, which guarantees the agreement of balance calibrations and wind tunnel tests, so the reliability of wind tunnel test data is raised greatly. The wind tunnel test is finished in May 2002, and the test polar agrees with the result of the Holland's HST wind tunnel test. Therefore the successful development of the half model balances fills in the blank of half model force measurement test in large wind tunnels at home.
出处
《流体力学实验与测量》
EI
CSCD
北大核心
2004年第2期77-81,85,共6页
Experiments and Measurements in Fluid Mechanics
关键词
跨声速风洞
半模测力天平
研制
雷诺数
应变计
half model balance
strain gage
wind tunnel test
transonic wind tunnel
