Oronos Polytechnique is a multidisciplinary student group with the objective of designing, building and operating high-power rockets. The group represents Polytechnique Montreal at the Intercollegiate Rocket Engineering Competition (IREC), the most demanding international rocket competition. Apart from international visibility, Oronos tries, through its activities, to build a Canadian expertise in the spatial domain and to share the members' passion for sciences and space with the public. It is also an opportunity for future professionals to develop new skills and apply notions learnt in class to concrete and interesting projects.