一种卫星推进系统复合材料氦气瓶设计及验证

在忽略内衬的条件下,对一种卫星推进系统复合材料氦气瓶进行了初步设计,并在考虑内衬的情况下,对初步设计的结果进行了详细设计和改进,获得了气瓶的内衬厚度、螺旋纤维和环向纤维厚度及缠绕角等参数。用有限元法对所设计的氦气瓶进行静力学、稳定性和模态分析,并作了完整的鉴定试验。设计和验证结果表明,基于网格理论的复合材料容器设计法可用于空间高压气瓶的设计,用有限元法对气瓶的力学性能进行分析和验证。两者结合,可有效满足复合材料压力容器设计及其分析的工程需求。

A Design and Its Identification of Composite Overwrapped Helium Tank Applicable to Propulsion System of Satellites

The inertial design of composite overwrapped helium tank for some satellite was made by grid theory when the function of the inner liner was overlooked.And the detailed design and its improvement were done when the inner liner was under consideration.The thickness of the inner liner,thickness and wound angle of the spiral fiber and circumferential fiber for the tank were gained.The statics,stabilization and modal of the designed vessel were analyzed by finite element method,and the complete approval tests were processed.The result of the design and approval showed that the composite overwrapped vessel design based on grid theory was effective and finite element method would be applied to approve the performance of the tank designed.The combination of the two methods could satisfy the requirement of the composite tank design and its analysis in engineering.