Analysis of Flutter Characteristics of Blunt Leading Edge Wedge-Shaped Wing
To study flutter characteristics of aircraft wings,ZONA 7 and ZONA 7U lifting surface methods were used to calculate flutter boundaries based on the blunt leading edge wedge-shaped delta wing model,and compared with the test results,the flutter boundaries calculated by ZONA 7 method are higher than the test value,which has hidden dangers in design.The ZONA 7U method can conservatively predict the flutter boundary and improve the design reliability.The ZONA 7U method is used to analyze the influence of leading-edge radius on flutter characteristics.The analysis shows that the flutter speed increases with the increase of the leading-edge radius,and the flutter frequency increases first and then decreases.The results show that the flutter velocity increases with the increase of Mach number,and the flutter frequency changes little with the increase of Mach number.
blunt leading edgewedge-shaped wingflutter characteristicZONA 7U methodleading-edge radius
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