The video’s show the HYDRA 4X hybrid rocket motor testing from the Fall and Summer of 2018.
ERIG is a team of students from the Technical University of Braunschweig, developing and constructing experimental rockets. HYDRA 4X produces 2000 N of thrust and will burn for 15 s propelling the team’s FAUST II rocket to 10 km in altitude.
Video Caption: This was the first hybrid engine test within STERN II. The engine Hydra 4X was developed and manufactured by students of the ERIG Team and tested at the test site of DLR Trauen. It uses the propellant combination nitrous oxide and HTPB. The video shows the engine with CFRP coating and yellow measurements stripes for temperature measurement of the engine surface. The test results will help to improve the engine regarding manufacturing and performance.
Video Caption: The Helios is the most powerful hybrid rocket engine of the ERIG. With N2O and HTPB as fuel it generates a maximum thrust of about 5000N.