of Technology, the student team Delft Aerospace Rocket Engineering (DARE) is very active in the design and building of hybrid rockets. In October 2015, DARE broke the European student altitude record with the Stratos II+ sounding rocket. Stratos II+ was propelled by the DHX-200 hybrid rocket engine, using a nitrous oxide oxidizer and fuel blend of paraffin, sorbitol and aluminium powder. On July 26, 2018 DARE attempted to launch the Stratos III hybrid rocket. This rocket used the same fuel/oxidizer combination as its predecessor, but with an increased impulse of around 360 kNs. At the time of development, this was the most powerful hybrid rocket engine ever developed by a student team in terms of total impulse. Unfortunately, the Stratos III vehicle was lost 20 seconds into the flight. Florida Institute of Technology has successfully tested and evaluated hybrid technologies with their Panther Project. The WARR student-team at the Technical University of Munich has been developing hybrid engines and rockets since the early 1970s. Using acids, oxygen, or nitrous oxide in combination with polyethylene, or HTPB. The development includes test stand engines as well as airborne versions, like the first German hybrid rocket Barbarella. They are currently working on a hybrid rocket with Liquid oxygen as its oxidizer, to break the European height record of amateur rockets. They are also working with Rocket Crafters and testing their hybrid rockets. Boston University's student-run "Rocket Propulsion Group", which in the past has launched only solid motor rockets, is attempting to design and build a single-stage hybrid sounding rocket to launch into sub-orbital space by July 2015. Brigham Young University (BYU), the University of Utah, and Utah State University launched a student-designed rocket called Unity IV in 1995 which burned the solid fuel hydroxyl-terminated polybutadiene (HTPB) with an oxidizer of gaseous oxygen, and in 2003 launched a larger version which burned HTPB with nitrous oxide. University of Brasilia's Hybrid Team has extensive research in paraffin wax / N2O hybrids having already made more than 50 tests fires. Hybrid Team is currently working liquefied propellant, numeric optimization and rocket design. Nowadays the rocket design team, called Capital Rocket Team, is developing high power hybrid rockets and researching about some additives. The Chemical Propulsion Laboratory has already made some researches and is developing the motor for SARA platform. University of California, Los Angeles's student-run "Rocket Project at UCLA" launches hybrid propulsion rockets utilizing nitrous oxide