Análise da geometria e prototipação de uma tubeira cônica de foguetes experimentais a propelente sólido para estudos em laboratório

Abstract

The present work consists in the study of the parameters necessary for the design and construction of a conical nozzle of rocket motors, to verify if the amount of thrust generated by the nozzle is close to that presented by the theory. To do this, a research is carried out with the intention of searching for the theories and hypotheses that validate the study, after this stage a simple algorithm was developed that calculates the dimensions of the nozzle. With all available dimensions the engine body components were machined in steel to perform the static test. The process of validation of the study is given in two stages: first, computational simulations are performed with the intention of verifying the validity of the hypotheses adopted and of estimating the behavior that the nozzle will present in the test condition. In the second consists of the static test where the rocket motor is put into operation, in the part of performing the static test there was the explosion of the rocket motor. The velocity and pressure fields obtained in the simulations were interpreted and discussed, and soon afterwards the two main causes of the explosion are pointed out