Cronos is a hybrid-fueled sounding rocket. It is a student-researched and developed (SRAD) project designed and manufactured by White Noise and Libre Space Foundation (LSF). White Noise is an open-source aerospace engineering team comprised solely of university students. The team collaborates closely with Libre Space Foundation to develop the sounding rocket in an open and participatory manner.
Engineered at hackerspace.gr, at LSF’s headquarters in Athens, Greece, the Cronos project enhances knowledge by enabling University students to hone their hard skills ( in development, electronics, avionics, and mechanics) as well as their soft skills (in creating solid collaborations, communication strategies, and organising the processes in a professional way).
The sounding rocket is designed to lift 4kg of deployable payload mass housed right below the airframe’s nose cone. Its paraffin wax and nitrous oxide hybrid propulsion system is able to produce an estimated 3000 N of thrust for approximately 3s. Thus, it is estimated to reach Mach 0.88 and an apogee of 3km AGL. It is designed so it will be safely recovered after the launch. In order to achieve this when, at apogee, two parachutes will be ejected by utilizing CO2 cartridges so as to safely recover the full rocket, making it, thus, a 100% reusable sounding rocket.
You can read more about the project [here].
Check the following presentation for a detailed overview of the project: <https://www.youtube.com/watch?v=-7EOVi6xYMw>
