直升机驾驶员夜间飞行观察导航系统

 根据直升机驾驶员夜间飞行观察系统（NVPS)的特点，对NVPS的环境适应性设计、光电传感器选取以及控制系统设计等问题进行仿真分析与计算。在系统热设计中热像仪传感器通过传导、对流或辐射将热传递到壳体上，由系统采取统一的散热措施，给出NVPS中伺服系统的2个主要工作模式，即随动与锁定的控制回路原理。仿真和计算结果表明：设计的NVPS系统中光学系统焦距为14mm，f/#为1.9，瞬时视场为2.13mrad，透射比≥80%；NVPS稳定性能可达到0.1mrad，转弯速度为30°/s，机动飞行期间的锁定误差不超过0.1mrad，对头盔的位置随动误差不超过1.5mrad，系统随动速度可达到250°/s，角加速度可达到500°/s2。

Night vision pilotage system for helicopter pilots

Night vision pilotage systems (NVPS) are used to assist helicopter pilots to realize taking off, landing and hedgehopping at night by providing the high-definition and large-area images. Based on the engineering application requirements and the state of art of the NVPS, the design methods of the NVPS are studied by analyzing and calculating some important issues, such as the design of adaptability to environment, the selection of photoelectric sensors and the design of control systems. The analysis and calculation results confirm the feasibility of the design, and the design shows that it is suitable when it applied in the engineering.