Then the gradients of flutter speed and frequency of wing with respect to the design variables were deduced with analytical method.
使用解析方式推导得到机翼的临界颤振速度、颤振频率对于设计变量的灵敏度表达式。
2
The sensitivity formulas about natural frequency and flutter damp to structure parameters were discussed, and the math models about optimization design were established.
建立固有振动频率和颤振阻尼对结构参数的敏度公式，设计两种不同优化问题的数学模型。
3
The variation of aerodynamic parameters of cascade NACA0012 and PROF under different reduced frequency shows that the reduced frequency is an important factor that influences the flutter.