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(Space Team Aachen Hybrid Rocket)

A "STAHR" is born.

After the successful launches of the CARL rockets, Space Team Aachen now shifts its focus towards a bigger and bolder project. While our previous rockets used commercial off-the-shelf (meaning store bought) solid-propellant engines, this next project shall fly with a hybrid engine designed and developed entirely by Space Team Aachen.

The Space Team Aachen Hybrid Rocket, or "STAHR", is set to be our first rocket to reach an apogee of 10 km or higher. It will be powered by a hybrid engine, meaning its propellants are stored separately and in different states of matter, which increases the overall safety of the propulsion system without lowering its performance. For our design, a combination of liquid nitrous oxide and a solid paraffin fuel has been selected.

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STAHR is designed around the first rocket engine developed by the Space Team Aachen. This engine is laid out to reach an average thrust of 3 kN, which shall launch the rocket at supersonic speeds to an altitude of around 10 km. The engine, and the test bench required to perform engine tests, have been in development since early 2020, with the first “hot fire” tests coming up soon. We expect to perform engine tests up to the launch with our own test bench at both the Shock Wave Lab in Aachen and at a DLR (german aerospace center) site. The launch is currently planned for the year 2024.


The rocket body will be manufactured out of carbon-fibre using state-of-the-art winding and 3D printing techniques. The tank, necessary to store up to 30 kg of oxidizers at pressure above 60 bars, will also be manufactured in house out of CFK, enclosing an aluminium liner. The rocket avionics, which monitor and gather its flight and engine data will be redundant, using both student-developed and commercially available flight computers. The recovery system, which guarantees the rockets safe return to the ground, will once again feature a dual parachute system consisting of a drogue and main chute. Unlike our previous rockets, the used parachutes will not be bought but rather manufactured by the students with
help from our partner institutes.

Mission Objectives




STAHR's hybrid-engine will be designed ground-up and fully custom-made.



STAHR aims to reach 10km, more than thrice the apogee of CARL.

Project Specifications

  • Target altitude: 10 000 m

  • Propulsion: Student Researched and Developed (SRAD) hybrid engine

  • Thrust averaging 3000 N

  • Supersonic flight speed

  • Launch weight: 100 kg

  • Scientific payload

  • Redundant dual-event parachute recovery system


Project Phases Overview

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Our Support

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