Atmoventus S-series

The Atmoventus S rockets are our most capable rockets yet, with an expected flight altitude of at least 600 m and up to 6 km when using store bought engines. At a length between 1,6 m and 2,2 m and a structural weight of more than 4,5 kg they are our biggest rockets. The 120 mm diameter of the S-series offers a lot of space inside of the engine bay, in which we will be able to test hybrid and liquid fueled engines in the future. The Atmoventus S rockets carry our onboard computer SHARC, the recovery system and depending on type one or two solid fuel motors.

As we are currently in development of the rocket, all information on this page might change while time goes on. Check the news for updates about big changes.

The rocket body

The rocket body is made from a main tube with a diameter of 120 mm, up to six fins and an aerodynamic nosecone. The load-bearing parts are made from carbon fiber, which is the perfect material for our rocket due to its low weight and high tensile strength. The parts are primarily held together with screws so we can build, service, repair and transport the rocket more easily.

The recovery system

The landing of our rocket takes place in two steps. At apogee, the 50 cm diameter pre-parachute gets deployed by an explosive charge. It helps our rocket on its controlled descend and protects the structure from extreme forces caused by a parachute opening at high speeds. The main parachute is deployed at an altitude of 700-500 m via an electric motor and pulled from the rocket by the first parachute. This second parachute slows our fall to 30 km/h.


The SHARC-carrier is a partially 3D-printed structure to hold all vital components of our flight computer SHARC. It is mounted in the upper section of the body tube right below the parachute and is directly connected to it. Thanks to the solid connection to the parachute, in the case of a catastrophic failure midflight we can recover the computer, including saved flight data, for later analysis.

rocket engines

We can fly using any motor which fits into our engine bay but keeps the rocket below a maximum acceleration of 10 g. We will conduct our Atmoventus S-LTV flights using two I55 38 mm motors to reach an altitude of about 600-700 m and test the TVC and recovery system. The Atmoventus S-H is designed to launch with a M685 motor which carries the rocket to an altitude of up to 6 km. In the future we will start testing hybrid and liquid fueled engines which may reach altitudes beyond 6 km and which will be used in the Atmoventus S-LOXTV rockets.

The launchpad

The launchpad will be built from aluminium beams mounted on a two-wheeled trailer. Four main beams are used as rails for 8 stabilization carts which help the onboard computer with control during the first split seconds of the flight. However, the ramp is far more important when conducting test starts without active thrust vectoring, as the rocket can’t stabilize itself aerodynamically at slow speeds.