火箭橇运动计算算法优化与试验验证

对火箭橇试验系统进行了动力学分析，研究了火箭橇运动计算方法，在常规算法基础上对各参量计算方法进行改进，并引入了新的参量能量耗散阻力，进而得到优化算法。取四次不同速度的双轨橇车试验结果分别与常规算法和优化算法计算结果进行比较，得到:常规算法计算结果误差最小为7.67%，误差最大为37.91%，优化后算法计算结果误差最小为0.48%，误差最大为5.0%；取四次不同速度的单轨橇车试验结果分别与常规算法和优化算法计算结果进行比较，得到:常规算法计算结果误差最小为11.78%，误差最大为43.64%，而优化算法计算结果误差最小为0.11%，误差最大为5.31%。结果表明火箭橇运动计算优化算法相比常规算法能有效提高计算结果精度，计算结果对火箭橇试验设计具有一定工程指导意义。 

Optimization and test verification of rocket sled motion calculation algorithm

The dynamic analysis of rocket sled test system was carried out, and the calculation method of rocket sled motion was studied. Based on the conventional algorithm, the calculation method of some parameter was improved, and a new parameter energy dissipation resistance was introduced to obtain the optimization algorithm. Comparing the results of four double-track sled tests with different speeds with the calculation results of the conventional algorithm and the optimized algorithm, it was found that: the minimum error of the conventional algorithm calculation result was 7.67%, the maximum error was 37.91%, and the minimum error of the optimized algorithm calculation result was 0.48%, and the maximum error was 5.0%; comparing the results of four different speed monorail sled tests with the calculation results of the conventional algorithm and the optimized algorithm, it was found that: the minimum error of the conventional algorithm calculation result was 11.78%, and the maximum error was 43.64%, and the calculation result of the optimized algorithm had a minimum error of 0.11% and a maximum error of 5.31%. The results showed that the optimization algorithm of rocket sled calculation can effectively improve the accuracy of calculation results compared with conventional algorithms, and the calculation results have certain engineering guiding significance for rocket sled test design.