
Project Stetind
Team 2021
Stetind was the first super-sonic rocket built and launched by Propulse NTNU. In June 2021, the team competed with Stetind in the digital Spaceport America Cup 30'K COTS class and won first place in its category, and 2nd place overall among all the 75 participating teams. 4 months later, in October 2021, the team launched Stetind at the European Rocketry Challenge and won the 9000 meter SOLID class, and breaking both the EuRoC velocity and altitude records.

Solid engine
Cesaroni Pro 98
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Apogee
9714m

Top speed
Mach 1.8 (2205km/h)
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0-100km/h
in 0.24 seconds


The launch
Stetind launched on October 15th; the last launch day of EuRoC. After many setbacks, including two misfires just hours before, Stetind soared into the sky at Mach 1.8 - Propulse NTNU's very first super-sonic rocket.
The ascent was perfect, but at apogee the main chute deployed early. The forward airframe softly touched down after drifting downrange for half an hour, but the aft fell off right after apogee. We dedicated a page to all the schenanigans that happened the week prior to launch, and detailing how we recovered the rocket:
Engineering breakdown
Team 2021 started the project with a new structure of the techical systems, it being divided into; Inner structure, Outer structure, Recovery and Avionics. Each of these systems have their role in the rocket which you can read more about below.
The team started conceptualizing the design of Stetind in September of 2020. Design continued to April of 2021 when after 3 design reviews, many iterations, tests and protypes, the final design was complete. Production of many of the components had started as early as February of 2021, and continued throughout the summer, with a full rocket reveal taking place mid August.
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