Purpose of the flight and payload description
BEXUS which stands for Balloon Experiments for University Students is a project part of the REXUS/BEXUs initiative that allows students from universities and higher education colleges across Europe and more recently also Canada to carry out scientific and technological experiments on stratospheric research balloons. The basic idea behind BEXUS is to provide an experimental space platform for students in different areas of interest such as atmospheric research, fluid physics, magnetic field, materials science, radiations physics, astrophysics, biology and also to serve as a platform for new technology demonstrations.
Each year, two balloons are launched from the European Space Range (ESRANGE) base near Kiruna, Sweden each carrying several experiments assembled on a medium-sized gondola (1.16 m x 1.16 m x 0.84 m). The total lifted-mass is approximately 300kg on each flight. With each payload weighing between 30 and 112 kg that means that 4 student experiments can be accomodated per gondola.
The first five flights of the program were carried out under sponsorship of the Swedish Space Corporation that offered available space on yearly technological flights carried out at ESRANGE. Since 2008, BEXUS is realised under a bilateral Agency Agreement between the German Aerospace Center (DLR) and the Swedish National Space Agency (SNSA). The Swedish share of the payload is made available to students from other European countries through a collaboration with the European Space Agency (ESA). EuroLaunch, a cooperation between ESRANGE and the Mobile Rocket Base (MORABA) of DLR, is the organism responsible for the campaign management and operations of the launch vehicles.
On each cycle of the initiative, experts from DLR, SSC, ZARM (Center of Applied Space Technology and Microgravity, University of Bremen) and ESA provide technical support to the student teams throughout the project. It begins with a Call for Proposals, followed by a condensed space project lifecycle, including typical design phases and reviews, culminating in the launch of the experiments and publication of the final reports.
Details of the balloon flight
Balloon launched on: 10/23/2019 at 4:33 utc
Launch site: European Space Range, Kiruna, Sweden
Balloon launched by: Swedish Space Corporation (SSC)
Balloon manufacturer/size/composition: Zero Pressure Balloon model 35SF Airstar 35SF - 35.000 m3
End of flight (L for landing time, W for last contact, otherwise termination time): 10/23/2019 at
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 4 h 3 m
Landing site: E of Pelkosenniemi, Finland
The experiments that were part of Bexus 29 flight were:
IROCS which stands for Influence of radiation on charged spheres is a project by the University of Duisburg-Essen, Germany aimed to investigate the dependency of charges on glass spheres and the radiation dose
TANOS acronym for Thermal atmospheric neutron observation system. An experiment developed at Kiel University in Germany to measure thermal neutrons above the Pfotzer maximum at around 25 km height.
SHADE which stands for SDR helix antenna deployment experiment, is a development of the Aristotle University of Thessaloniki, Greece to test a helix antenna deployment mechanism, ADCS system and pointing mechanism and to downstream data through an SDR-based system.
R2C2 acronym for Radar recognition of chaff clouds in the stratosphere, is an experiment about the navigation of high altitude aerostatic balloons. Developed at Luleå University of Technology, Sweden.