Stratos III In-Flight Failure Investigation Paper

Students from Delft Aerospace Rocket Engineering recently presented their failure investigation paper into the anomaly that occurred during their Stratos III rocket launch last year at the International Society of Air Safety Investigators (ISASI) conference this year.

The rocket experienced an inertial roll coupling before disintegrating in flight at Mach 3 and 10km in altitude. Rather than explain it all here, click the paper below!!

(Good to see student teams carrying out a thorough analysis and sharing it, I wish more would be open and sharing)

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.

Instagram Pic of the Week

Stratos III Launch Rescheduled

[Updated again..16/7/2018]

As per the tweet below, rescheduled by two days to July 18th four days to July 20th.

Video Caption: The Stratos III launch campaign has started! Our first launch attempt is on July 18 2018 at 9.35 PM CEST. Live stream will be available at and on ths channel!

Interested? Follow us on social media to keep up to date!