DARE: Engine Testing and Recent Happenings

The team has also released a newsletter covering what they have been up to recently. Download it here to find out!!

Video Caption: Test 16 of the DHX-400 ‘Nimbus’ hybrid rocket motor for the Stratos IV student built sounding rocket.

Delft Aerospace Rocket Engineering is a student-team of Delft University of Technology and one of the largest and most advanced student rocketry teams in the world.

Follow the journey of Stratos IV to space on our social media!

FACEBOOK: www.facebook.com/daretudelft
INSTAGRAM: www.instagram.com/daretudelft
TWITTER: www.twitter.com/daretudelft

Instagram Pic of the Week

Instagram Pic of the Week

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Today in our new rubric #TechnologyTuesday we present the injector of our Cryogenic Propulsion Team! ❄️⠀ ⠀ This pintle injector is used to inject liquid oxygen oxidizer and bio-ethanol fuel in the combustion chamber where the fluids react. During an engine test, the copper pintle allows a flow of roughly 660 grams per second of liquid oxygen in radial direction. Around the pintle a film of ethanol is formed, which is injected axially at a rate of roughly 440 grams per second. The reaction of these propellants results in a thrust of 250 kg and a temperature in the chamber of over 3000 degrees Celsius!⠀ ⠀ #rocket #rockets #engineering #daretudelft #amazing #cool #injectors #technology #student #tech #cryogenic #propulsion

A post shared by DARE TU Delft (@daretudelft) on

Stratos III Launch Summary

More details have emerged from the launch of Delft Aerospace Engineerings Stratos III rocket. Those who watched the stream know that at about 20 s into the flight the rocket encountered an anomaly.

More specifically from the teams latest blog post,

The rocket trajectory was a straight line from the 85 degrees launch rail and fit our simulations very well. The anomaly occurred at around 20 seconds into flight. Stratos III was flying at around 11 km with a speed of nearly 900 m/s or close to mach 3 at the time of the anomaly. In addition the failure occurred so fast that data transmission was cut of almost immediately. Some sideway 2g acceleration was registered by the on-board inertial measurement units however this still needs to be confirmed as the rocket was also spinning slightly.

Whatever happened it happened at Mach 3, now that is fair hauling!
The team is still investigating, it will be interesting to see the conclusion and how this will be implemented in the next generation rocket.

Stratos III Disintegrates 20 seconds into Flight

From the teams Twitter account,

#StratosIII was launched last night and 20 seconds into the flight the rocket disintegrated. Together with INTA, we’re investigating the anomaly and the cause of the failed attempt. We’re awaiting the post-flight review with INTA and we’ll release our official statement tomorrow.

Really feel for the team, they are a bunch of enthusiastic and talented students, so I am sure they will find the cause and come back in force to reclaim the European student altitude record.

Video Caption: During flight, optronics is used to track the rocket. The glare seen just before disintegration of the rocket are due to the tracking cam refocusing its lenses on the rocket. Two shots of the rocket lifting off show a clean liftoff and initially a nominal flight.