In this paper,the stability and control of a hingeless helicopter in wind shear were investigated. 研究了无铰直升机在风切变场中的稳定性和操纵性。
Numerical results show that significant reductions of vibratory vertical shears and hub moments in the fixed frame can be obtained for a four-bladed soft-inplane hingeless rotor. 数值结果表明振荡附翼的引入能有效地降低旋翼桨毂的振动载荷。为振荡附翼的振动自适应控制律设计提供了有效的旋翼气动弹性分析方法。
A theory of aeroelastic stability of hingeless rotor blade in hover by using the Galerkin weighted residual finite element method is developed in this paper. 采用伽辽金加权余数有限元素法发展了一种悬停状态下无铰旋翼桨叶气弹稳定性的分析方法。
A hingeless arch example was analyzed with the structural mechanics Solver and traditional method,indicating the high efficiency and accuracy of computer method. 通过用结构力学求解器分析无铰拱实例与常规方法比较,显示了计算机方法的高效性和准确性,指出求解器水平分布荷载功能可能存在的问题。
Based on the summary of the others researches,the applied calculation methods of the lateral stability of catenary single rib hingeless arch that carried the vertical loadings were analyzed. 在总结前人研究成果的基础上,重点探讨了悬链线单肋无铰拱在竖向荷载作用下,横向稳定影响的实用计算方法。
