The STERN (Student Experimental Rockets) Project is a project sponsored by DLR-RM (Raumfahrt Management), with the goal of engaging students in the topic of space transportation.
To this end the students  will design and build a rocket that must at least be capable of supersonic flight and reach a minimum altitude of 3000m. This enables the students to gain experience in all subsystems necessary for a space transportation system, such as propulsion, structures, aerodynamics, control systems, guidance and recovery.

The contribution of ZARM to this project is the ZEpHyR, ZARM Experimental Hybrid Rocket. The rocket is designed to fly to an altitude of about 20km with a payload of about 5kg. It is powered by a hybrid rocket motor, utilising paraffin and LOX as propellants.

The development of the hybrid motor is one of the central topics in this area and provides the opportunity to open further research topics in this area.

Currently, a subscale prototype of the engine is being tested at ZARMs hybrid rocket test stand, to gain experience in the combustion dynamics, fluid management systems and engineering challenges of building a flight hybrid propulsion system in the 2kN range.


The project is supported by the DLR-RM.