Most innovative approach award at ARC Nationals

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Congratulations on your ARC "Most Innovative Approach" award, @Nv7 !

What a GREAT name for an actively controlled rocket !

I'll not spoil it for the audience -- watch the videos :)

How did you do on predicted -vs- actual altitude ?

Thanks for the great videos !!

-- kjh
Unfortunately our motor underperformed so our predicted velocity was much higher than in reality, causing it to overcorrect. This was not handled because the accelerometer cannot measure the acceleration of the motor, so velocity after burnout is hardcoded. I have a future flight computer in the works that will fix this! I've attached the flight data for your analysis too.


  • flight3.csv
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Congratulations on the "Innovative" award. Recently, I've come across projects related to your project. I found a couple of older TARC teams that attempted altitude control with two midbody movable fins. One team had a rocket almost identical to yours. I also came across a collegiate team working on a vertical guidance system that used 4 fins for guidance and three fins for stability. What I found interesting in their data was the turbulence patterns of the 4 movable fins on the 3 stability fins. There are some issues with 2 and 4 movable fins combined with 3 stability fins. The Mira Costa Aerospace Engineering Club on Instagram is testing variable base drag plates on their vehicle STRATA III. The base drag plates do not cause spin issues and also improve vertical stability. Some ideas for your further research.