The design of the experiment and creation of the regression model of the specific impulse liquid rocket engine thrust from 10 to 420 N

For the engine S10 with the thrust 10 N and the engine S400 with the thrust 420 N developed by EADS Astrium, the matrix planning to create the regression models of specific impulse has been built. The experimental results are processed with the help of the specially developed software at the present method of treatment. An adequate regression models of the specific impulse for the engines are created. The analysis of regression models is built in the graphical form. It is concluded that the fuel has an impact on the regression models with an increasing engine thrust. A special software for the experimental design and statistical analysis of the results has been developed and tested.