Project TELL

A rocket engineered by students

With Project TELL Rocket, ARIS competed for the first time at the Spaceport America Cup 2018 in June, in New Mexico USA. Despite a failure in the rocket motor, our rocket won the Charles Hoult Award for Modeling and Simulation from all the 94 rockets flown and judged.

More information on the Technical Poster.


Lift-off weight: 24,5 kg

Length: 2450 mm

Diameter: 150 mm

Motor: Aerotech M2400 (2400 N)

Payload: Biological Experiment

Control: Altitude by airbrakes


The composition of the rocket TELL

The TELL sounding rocket is divided into five parts that together make the rocket. They interfaces have to be designed for the parts to work seemlessly together.


To recover TELL, a drogue parachute is deployed after apogee to stabilize the descent. 400 m above ground the main parachute slows the rocket down. The events are triggered by redundant, independent avionics.Recovery System


To continuously transmit the system status, velocity and position of TELL, a X-Bee module communicates with a ground station. A WiFi network enables communication within the rocket.


Controllable airbrakes allow to increase the drag of the rocket and help to reach the target apogee of 10’000 ft as exactly as possible.


The payload of TELL are a 1U and 2U CubeSat and weighs 4 kg. It includes a Biological experiment of the University of Applied Sciences of Lucerne HSLU and a technology demonstrator


The rocket is propelled by a commercial solid state motor. It is composed of Ammonium Perchlorate. It will burn for 3 seconds, and accelerate the rocket with up to 10 g to approximately 300m/s maximum.


A Carbon-fiber composite rocket shell and lightweight Aluminium parts on the inside ensure the structural stability of TELL. It has to withstand the high acceleration during ascent and the shocks during parachute opening and touch-down.

Check out videos of the project

SA Cup: Launch

Check out the video of the take off from multiple angles and see how the rocket looked like after launch!

SA Cup: House of Switzerland

We proudly represented our country with some raclette and chocolate in the desert of New Mexico.

SA Cup: Failure Analysis

Here’s a first look at the potential reasons of the break up on ascent of our rocket during the launch.

SA Cup: Exhibition

Jonathan Firth (Exec. VP of Spaceport and Program Development of Virgin Galactics) was impressed by our airbrake design.

SA Cup: Livestream of the Launch

Before the launch of the TELL rocket, the CEO of the project tells more about the rocket and the organization.

SA Cup: Assembly

Before our rocket is inspected by the judges, it needs to get assembled first. Check out the timelapse of the assembly!

SA Cup: Journey to the USA

We arrived safely in El Paso. We met the vice president of the Experimental Sounding Rocket Association!

Spaceport America Cup Teaser

Time to explain what the Spaceport America Cup is and details about our rocket.

Windtunnel testing at Sauber

Find out in this video how we prepared for it with the help and know-how of Sauber Aerodynamik.

Making the nose cone

The nosecone of TELL 1 is made of glassfiber prepreg. The half-shell mould is closed after the layup and subsequently cured in the autoclave.

Launch at Cernier

It is the first time the team launches a Level Two rocket. The self-built recovery worked perfectly and the team had a blast.

Additive Manufacturing

Christian explains us how additive manufacturing helps to have a good idea what the final object will actual look like.

Building a Test Rocket

ARIS is a group of passionate students, working on Project TELL. They will compete at the 2018 Spaceport America Cup!

Critical Design Review

With the help of our industrial partners the team figures out what the best final design of the rocket will be like.