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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Validation of the Theoretical Model for Dimensioning the Propellant Characteristics in a Laboratory Scale Hybrid Rocket Motor Bench
Submission Author:
Rodrigo De Melo Silveira , SP
Co-Authors:
Rodrigo De Melo Silveira, Isabel Matos, Lia Pimont, Paula Cristina Fernandes, Leonardo Henrique Gouvêa, Pedro Lacava
Presenter: Rodrigo De Melo Silveira
doi://10.26678/ABCM.ENCIT2020.CIT20-0405
Abstract
Hybrid rocket propulsion represents a promising alternative for aerospace systems due its low cost and high safety by using inert fuel grain. Preliminary tests of rocket motors on a laboratory scale test bench represent a good alternative for cost reductions and a possibility to study the application of new fuel blends. The purpose of this work is to validate a simulation procedure that uses theoretical analysis of the parameters of a pre-existing test bench and then evaluate the applicability for other different fuels. Validation methodology consists of inputting appropriate propulsion parameters at NASA CEA (Chemical Equilibrium with Applications) tool and at MATLAB® routine in order to obtain parameters measured from previous tests made at the test bench. The workbench consists of the motor itself, the gaseous oxygen and gaseous nitrogen (used for purging oxygen after burning) supply lines, a control panel, a data acquisition board, and a computer that controls it. Preliminary results so far show that theoretical obtained values of chamber pressure and thrust are compatible with experimental measurements.
Keywords
Aerospace engineering, hybrid rocket propulsion, Propulsion parameters, test bench, hybrid rocket motor
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