The REXUS/BEXUS programme allows students from universities and higher education colleges across Europe to carry out scientific and technological experiments on research rockets and balloons. Each year, two rockets and two balloons are launched, carrying up to 20 experiments designed and built by student teams.
Video Caption: On August 4th 2018 we successfully launched the Nexø II rocket. Nexø II is Copenhagen Suborbitals most advanced rocket to date. In this video we show you the complete story will all the highlights of the mission. Enjoy!
Video Cation: After 4 years of development, WARR performed the first hotfire tests of Europe’s most powerful cryogenic hybrid rocket engine. With 3kg/s of liquid oxygen massflow, the “Battleship” generates 10kN thrust for up to 15 seconds burn time. The design point of 20bar chamber pressure was nearly hit and valuable performance data was collected for further improvements. The two-week campaign included verification coldflows, ignition checks and four hotfire tests with 5s, 10s (2x) and 15s burn time.
Special thanks to all members of the WARR Ex-3 Project as well as the members of the M11 Test facility at the German Aerospace Center (DLR) Lampoldshausen for the support and guidance. This project was funded by the Federal Ministry for Economic Affairs and Energy (BMWi) during the STERN Project.
Please note: We are predominantly master students of mechanical & aerospace engineering and spend most of the time before tests on calculations and preparations to prevent severe damages on material and personnel. Please don’t feel inspired to light your own rocket motor in your backyard. Rocket science is a serious issue – if you get the numbers wrong, people die. You have some experience in mechanical/electrical engineering and want to participate, become part of the team? Feel free to send your application to email@example.com
More specifically the hybrid engine is being developed alongside the pistonless pump and will be used to test the 85% grade hydrogen peroxide, which the group plan to use in their larger rocket currently under construction.
Andrej Vrbec has released footage and information on his latest sugar rocket project, a boosted dart flight to 57,359ft.
The rocket used a 110mm diameter booster, which had an average thrust of 9606N (2159lbf) equivalent to an O9000 motor size, with a 50mm diameter dart rocket on top. The dart was fabricated from stainless steel and fibreglass and had a mass of 9.3kg, the flight was logged using a Perfectflite Stratologger CF and an ARTS-2, with tracking via a BigRedBee 70cm HP GPS.
The flight was considered a success, the booster burned out at 3.5sec and at 4000ft, where the dart then coasted to apogee which took more than 50sec. A 18in diameter parachute was deployed at apogee and the dart was recovered some 8km from the launch site, unfortunately the booster recovery system failed and it impacted ballistic about 1km from the launch site.
Andrej’s next project is to replace the dart with a sustainer in order to reach over 100,000ft.
Another great rocket project out of Europe, this time the Swedish Rocket Research Group, the group aims to build a rocket capable of launching a small satellite into orbit and or high altitudes, more specifically from their Facebook page,
SRRG began life as an experimental rocket test program set up by Sebastian Borg, Henrik Ågren and per Lantz back in April – 2010. The objective was to develop an inexpensive means of delivering small scientific payloads to high altitudes.
SRRG has grown from being the vision of one man to a group of focused and well-motivated team consisting of both full-time and part-time volunteers.
Everyone at SRRG shares the dream of space exploration and we are working toward providing you with a truly unique opportunities.
SRRG personnel work on all aspects of vehicle and propulsion design, testing step-by-step, integration, launching and recovery.
Our goal is commercialisation of space for private individuals, schools, and small entrepreneurs etc…
The whole project is both open source and non-profit in order to inspire as many as possible.
The project is currently working on a Peroxide/Ethanol powered rocket called “Pegasus”, which is designed to transport, protect and support experiments in space.
Pegasus has a diameter of 0.6m and height of 11.2m, with a liftoff mass of 1820kg, producing 3.8tons of thrust the rocket is able to achieve altitudes between 100 – 250km.
Pegasus will use pistonless pump technology to feed the propellants from the tank to the engine, this type of pump is unique in the sense it does not have any moving parts besides 3 chamber valves. A paper with a more in-depth analysis and more exact explaining of the workings can be found here.
The video below shows in perfect clarity, such a pump working.
The group continues to work towards getting Pegasus to a flying stage, with work happening every day. The project can be followed here on Mach 5 lowdown or at the groups respective sites and social media channels: