1. Dynamic stability and control laws of a hingeless rotor helicopter were studied.

2. Through comparative study of hingeless arch bridge , two-hinged arch bridge and three-hinged arch bridge, the influence of connection condition of arch on mechanical condition is discussed.

3. 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.

4. A method is given for the calculation of the stability and the control of a helicopter with hingeless rotor under lateral gust.

5. 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.

6. In this paper, the stability and control of a hingeless helicopter in wind shear were investigated.

7. The experimental results verify that the feasible theory can be used to investigate the effects of structural parameters of hingeless rotor on aeroelastic stability.