Project HEIDI

Rocket engineering goes into 2nd round

With Project HEIDI, ARIS will compete for the second time at the Spaceport America Cup in New Mexico, USA. The main goal is to incorporate all learnings made with Project TELL (awarded with the Charles Hoult Award for Modeling and Simulation), especially considering reliability as due to a failure in the rocket motor at Spaceport America Cup 2018. This year we are striving to engineer an award winning system again.

Lift-off weight: 23 kg

Length: 2’780 mm

Diameter: 150 mm

Motor: Aerotech M2400 (2400 N)

Payload: tbd

Control: Altitude by airbrakes

Focus of Project HEIDI

This years rocket project focuses on increasing stability, reliability and safety of the rocket design.


During the development of HEIDI, the team focuses on increasing the reliability of the whole system. Therefore, critical components are analyzed. Strategies for reducing specific risks were found and implemented in this year’s design. This will enable several successful launches.


With the improved structure of the rocket, an increased dynamic stability is achieved. This results in a more stable flight trajectory and improves precision. Using fluid-dynamical optimizations the best shape for the airframe was found. With these methods, drag is reduced, and the efficiency increased.


The integration of a redesigned and improved air brake system achieves better control of the final height of the rocket. With the implemented system we can hit the target apogee of 10’000 feet as close as possible.


The airframe features a standardized interface structure which enables us to exchange CubeSats together with its experiments in less than two minutes. With this system, we can test as many experiments as possible. Having the possibility to integrate up to three experiments at the same time we are able to offer the highest flexibility.