Rocket motor nozzle flow geometry is considered through its influence on the thrust vector control (TVC) performances. Extensive research is conducted using theoretical and software simulations and compared with experimental results. Cold and hot flow test equipments are used. The main objective of the research is to establish the methodology of flow geometry optimisation on the TVC hardware system. Several geometry parameters are examined in detail and their effects on the system performances are presented. The discovered effects are used as guidelines in the TVC system design process. A numerical method is presented for the determination of dynamic response time upper limit for the TVC system based on the gas flow dynamics performances.
The paper discusses the temperature changes in mechanical jet tabs in a
system of rocket motor thrust vector control, estimated by the simulation and
experimental tests methodology. The heat transfer calculation is based on
complex computational fluid dynamics simulations of both the nozzle and
external tab flows, as the comprehensive integral flow zones with high flow
parameters gradients. Due to a complexity of the model for flow calculations,
the experimental estimation of the calculated results is carried out. The
temperature is measured by jet tabs embedded thermocouples, and conducted
through the rocket motor static tests. A good agreement of the calculated and
measured results is achieved. The main aim of the developed method is to
establish an approved calculation tool for designing new TVC systems in order
to avoid disadvantages due to overheating.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.