The development of experimental propulsion projects by undergraduate students introduces new practical knowledge to improve competitiveness in the rocket industry. This work addresses a methodology for testing solid engines based on an embedded and mechanical system at low cost from the modeling of the solid potassium nitrate propellant with candy-rocket sucrose propellant (KNSB). The purpose of this study was modeling of the rocket engine, the design and manufacture of the test bench and the design of the Integrated system to measure the thrust of the rocket engine. Complementarily, the result of an experimental measurement is detailed and compared with the analytical study of the thrust. Using small rockets to study atmospheric precipitation requires several engine tests. For this reason, it is important to study different engines for the academic missions that are proposed in the future. The Universidad Nacional de Ingenieria promotes this research that also participates in the 'CSPACE' launch campaigns organized by the French Space Agency in Tarbes, France and won the Technological Innovation Award from the Peruvian Oil and Energy Mining Society in 2018.