This study is addressed to design and build a nozzle for a first stage of a solid propellant APCP (Ammonium Perchlorate Composite Propellant) based as a part of an EETAC university grant. We will use the simulator Moon2.0 to design the 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 (Low Earth Orbit) orbit a femtosatellite of less than 100 gram mass.