The thesis expound dynamics model of a certain minitype helicopter and design control augmentation system ( cas ) for the helicopter . at last , the author design and develop the 3d visualization simulation platform for helicopter , using visual c + + and opengl 论文对某小型直升机建立的动力学模型进行了简要的阐述,并且针对该直升机设计了控制增稳系统,最后,在visualc + +平台下,利用opengl ,对直升机三维动画仿真平台进行设计与制作。