Author: Fabio Kerstens

Supersonic Speed Estimation

When flying a rocket, it is very important to know the velocity of the vehicle throughout the flight phase. Unlike measuring speed on a bike or a car, a rocket moves very quickly through the atmosphere, making a proper speed estimation a challenge. Despite, our structures department managed to develop a supersonic pitot tube, which…
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Testing Parachutes

Before a parachute can fly on one of our flagship missions it needs to be thoroughly tested. This blog dives into the testing that is done by the Parachute Research Group (PRG) and will give an explanation of why tests are being done. It is important that the tests represent the envelope in which the…
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Introducing the Parachute Research Group

The DARE parachute research group (PRG) was founded in February 2018 when the DARE and Stratos Recovery teams merged. The merger allowed for the resources to be better used and as the goals of the teams were close together the merger was smooth. Before the merger, the DARE recovery team was mainly working on Aether…
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Project Management in Stratos IV

A project like Stratos faces many challenges. Some of them are technical, but a lot of the challenges we face are different. As most of the team members are technical students, we are usually able to solve most technical problems. We are far less educated in management and other non-technical tasks. Considering the fact that…
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Third Anniversary Stratos II+

Today marks the third anniversary of the successful launch of our Stratos II+ rocket. On October 16th 2015 Stratos II+ flew to an altitude on 21.5 km, thereby breaking the European altitude record for student rockets. This achievement was the culmination of many new technical innovations and operational successes which are still with us today.…
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Looking Back at the Stratos IV Kick-Off Weekend

My name is Mohammad Fazaeli and I am part of the Stratos IV non-tech team. I am currently studying Aerospace Engineering at TU Delft and am in the 2nd year of my Bachelors. I joined this project because I wanted the experience of working in this exciting field. In this blog, I will take a…
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Stratos IV: Shooting for Space

“We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are…
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Stratos III versus the ‘big boys’. How does it compare?

As you all know, our Stratos III rocket was launched this summer to break the European altitude record for students. Unfortunately the flight ended prematurely at an altitude of around ten kilometers. In this blogpost I would like to take a closer look at the Stratos III rocket and see how it compares to the…
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How to Ignite a Rocket Engine?

Just like your car, a rocket needs a way to get its engine started and for project Stratos we made our own ignition system! A successful igniter must be small enough to fit inside the rocket engine, energetic enough to ensure a reliable start and without any components that could damage the rest of the…
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Cancelled Launch Attempt July 24

Unfortunately, we have cancelled the launch window for today. Although the weather was suitable for launch in the early afternoon, the weather balloon data obtained in the evening showed winds at lower altitudes are much stronger than predicted. This led to margins on wind becoming smaller than expected, making a launch today not possible. As…
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