舰载飞机拖曳弹射起飞过程载荷大、时间短，且受航母运动、气流扰动等条件影响，存在复杂的动力学问题。本项目基于多体系统动力学、动态有限元、粘性流体力学和空气动力学理论，建立舰载飞机弹射杆张紧、牵制载荷突卸、弹射滑跑、起落架缓冲器突伸、飞机离舰等弹射起飞全过程动力学分析模型，系统解决牵制载荷突卸瞬间前起落架支柱振动、前起落架缓冲器突伸非线性动态刚度和阻尼特性、舰面气流和航母运动对舰载飞机起飞动力学影响规律、舰载飞机弹射起飞机舰适配性等动力学分析难题，形成一套高精度舰载飞机弹射起飞动力学分析方法，构建模拟真实环境的机-舰-气流动力学综合分析平台，研究获得满足弹射起飞安全准则的主要机舰参数的适配规律。本项目的研究将为舰载飞机起落架和弹射机构设计奠定坚实的动力学理论基础，对制定舰载飞机弹射起飞安全准则、发展我国新一代弹射起飞舰载飞机具有重要的指导意义。

During the catapult launch of the carrier-based aircraft, complex dynamics problems exist because of the large load and short time, as well as the movement of the carrier and the airflow disturbance. This project, which based on multi-body system dynamics, dynamic finite element, viscous fluid flow theory, and aerodynamic theory, establish many dynamic analysis models of the aircraft in the whole process of catapult take-off, including launch bar tensing, the sudden discharge of holdback load, catapult taxiing, fast-extension, and leaving from the carrier, in order to solve many dynamics problems such as the nose gear's vibration caused by the sudden discharge of holdback load, nonlinear stiffness and damping characteristics during the fast-extension process, the influence of airflow distribution and carrier's movement on aircraft's take-off, and aircraft-sea parameter adaptation during the catapult take-off. By doing so, a set of high precision aircraft catapult take-off dynamic analysis methods is established, by establishing aircraft-ship-air dynamics integrated model and analysis environment and analyzing the key parameters' influence on aircraft-carrier parameter adaptation characteristics based on the dynamic analysis results. The studies of the project base the dynamic foundation for designing aircraft's landing gear and catapult mechanism. It is of important guiding significance for making the safety criterion on aircraft's catapult take-off and China's development of a new generation carrier-based aircraft.