Delft Aerospace Rocket Engineering (DARE) is a durable student rocketry society at Delft University of Technology, founded in 2001. Its students design, build, test, and launch rockets and propulsion systems; DARE records the 2009 Stratos I and 2015 Stratos II+ flights, while current projects include HALEX II, Stratos V, propulsion, avionics, recovery, and turbomachinery development.