The Influence of Wind Shear to the Wind Energy Conversion Device Output Character and Research of the Variable Pitch Optimization 风切变对风能转换装置输出特性影响及变桨优化研究螺旋桨转速与航速比转数与船速比
The test was analysis the cultivar and media of economic character, which using grey relation pitch, the most combination is Pumilus Red Bell of Rock Wood disposal. 试验采用方差分析和灰色关联度分析方法对参试组合的经济性状进行了综合评估和分析,最终筛选出的最适合室内观赏栽培的组合为矮生红铃品种的岩棉栽培。
Character of Controllable Pitch Propeller and Research of Controllable Pitch Propeller Control System 可调螺距螺旋桨推进特性分析及控制系统研究
The control response character was analyzed in forward flight simulation under the step inputs of the collective pitch and push/ pull stick control. 通过仿真计算分析了吊挂前飞状态下总距阶跃操纵输入以及前推杆阶跃操纵输入时直升机及吊挂动力学响应历程。