This study is addressed to design and build a nozzle for a second stage of a solid propellant APCP (Ammonium Perchlorate Composite Propellant) based as a part of an EETAC grand. We will use the simulator Moon2.0 to design basics nozzle parameters. A series of material tests should be done in order to validate the technology based on composite materials such as Carbon FOAM, graphite and ceramics. In this final bachelor work, we try to check if this design is useful for a project like the low cost Wiki-Launcher less than 100 kg mass that puts in LEO orbit a femto-satellite of less than 100 grams mass.