STAHR Mission Patch (JPG).jpg
EuRoC 2020 logo.png


(Space Team Aachen Hybrid Rocket)

A "STAHR" is born.

After CARL’s successful launch at the EuRoC 2020, Space Team Aachen’s focus now shifts towards a bigger and bolder project. While our previous rockets used commercial off-the-shelf (COTS) solid-propellant engines, the 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 reach an apogee of 10km to compete in the 30,000 feet category in both European and American competitions. Hybrid engines use propellants stored separately and in different states of matter, which increases the overall safety of the propulsion system while also providing high-performance. For our design, a combination of liquid nitrous oxide and a solid paraffin fuel has been selected.

hybrid cutaway.JPG

In a similar fashion to CARL, the rocket body will be manufactured out of carbon-fiber using state-of-the-art winding techniques. The oxidizer-tank will also be made from carbon-fiber in order to store nitrous oxide at pressures above 60 bars while being as lightweight as possible.

In order to reach the target height as accurately as possible, the avionics will regulate the rocket’s thrust using sensors measuring data from both the engine and the atmosphere, and at the same time managing onboard data and supplying all electrical equipment with power.

STAHR will also carry a payload weighing approximately 4kg, as per the competition’s requirements. A dual-deployment parachute system consisting of a drogue and main chute will ensure that our rocket is recovered safely.

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: 10000 m

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

  • Thrust: 3000 N

  • Maximum speed: more than Mach 1

  • Launch weight: 60 kg

  • Payload: 4 kg scientific payload (3U)

  • Recovery: Redundant dual-event parachute system


Project Phases Overview

EuRoC 2020 logo.png

Our Support

HHV STIftung.png