3-D Burnback Analysis of Finocyl Grain Configuration with Variational Design Method
Variational design method is adopted to tackle the issue of lengthy simulation time and complex burning surface topology in the process of burnback analysis for finocyl grain configuration. Firstly, the characteristic function of fin entity is defined as the generalized description of different types of finocyl grains; Secondly, 3-D graphic scaling transform is performed to decrease the geometric size of grain and save the computation time; Then, to avoid omission and duplication during burning area statistics, a new color-marked burning surface area algorithm is put forward and the flow of finocyl grain variational design is summarized as the universal solution to this type of grain; Finally, two examples are given for the validation, the results show that: 31.8％ of simulation time is saved through the graphic scaling transformation; the results of proposed method are compared with the UG simulation results and experiment results in the reference, and the maximum errors are 2.4％ and 3.1％ separately, while the consuming time is only 1/245 of UG. The high accuracy and efficiency of the method get well verified. This method can handle a variety of finocyl grains, and has found a wide application in solid rocket motor design.
finocyl grain solid rocket motor grain burnback analysis variational design solid modeling
CaiQiang Bao Futing Hu Haifeng Liu Yang Ding Lin
School of Astronautics, Northwestern Polytechnical University, Shaanxi, Xian, China,710072 School of Astronautics, Northwestern Polytechnical University,Shaanxi,Xian, China, 710072 School of Astronautics, Northwestern Polytechnical University, Shaanxi, Xian, China, 710072 School of Astronautics,Northwestern Polytechnical University, Shaanxi, Xian, China, 710072
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
1072-1075
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）