#rocketry #modelrocketry #question

I'm a member of a rocketry team at Purdue University, and our team's rocket broke apart right before burnout, probably supersonic. I thought we broke a fin, but the fincan was recovered with all 4 fins still solidly attached. Any ideas on the cause of failure? Video footage, wreckage, and .ork...

I developed a Model Rocket entirely from scratch using 3D printed body and home made engine and presented it for expo in my college. It took me 2 months of severe hard work to make it so far. But, despite my hardwork teacher asked "What is this used for?","What's new in this?","Why is your model...