TVC Hold Down Test CATO

Discussion in 'The Watering Hole' started by Yukon@K-9 Rocket Tech, Oct 8, 2019.

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  1. Oct 8, 2019 #1

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

    Just a teen who likes building rockets

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    Hi everyone! I have decided to do a TVC hold down test recently which resulted in a CATO failure of the E 12-4 motor. The notorius Estes E-12 motors! I have gotten a ton of data from this test (especially the high speed footage) and can't wait to do more tests soon after I finish another TVC Test Vehicle!

    -Yukon


    Also this is what a sucessful TVC test I did previously looks like. Yes different, but it should've looked somthing like this

     
    Last edited by a moderator: Oct 9, 2019
  2. Oct 8, 2019 #2

    dhbarr

    dhbarr

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    It did not explode or detonate, but it did suffer a CATOstrophic failure, apparently from overpressure.

    I only mention it because you seem to have a real passion for investigation and education.

    Thanks for the great work!
     
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  3. Oct 8, 2019 #3

    jqavins

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    Well, we learn from every failure, right? This time we learned not to use E9 or E12 motors when expensive equipment is at risk ;).
     
  4. Oct 8, 2019 #4

    kuririn

    kuririn

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    Hmmm, if you're going to plug it to seal off hot gasses from damaging your equipment maybe use epoxy instead of hot glue? Just a thought.
    And maybe remove the ejection charge? or use an E12-0?
    1691-E12-0-Engine.jpg





    Or don't plug it, just put in a bulkhead between the motor and your equipment and let the motor kick out?
     
    Last edited: Oct 8, 2019
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  5. Oct 8, 2019 #5

    aerostadt

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    I think as much time and thought that you put into this study, it is probably time to look at a different motor than the E12-4.
     
  6. Oct 8, 2019 #6

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

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    Yes the Ejection charge was removed. It surely was un-noticed ctacks in the propellant. I really should use a E-12-0 next time or a different motor. Epoxy is a good idea! I just used hot glue because Joe Barnard was doing that too

     
  7. Oct 8, 2019 #7

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

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    Yes I want to start going with a F-15 motor or something. Longer burn is better
     
  8. Oct 8, 2019 #8

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

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    Yes thank you! Right after this, multiple people exlained to me the un reliability of E motors. Also I need a better way to contain the CATO, rather than having a flight computer rigjt above the propulsion and control section Lol!
     
    Last edited by a moderator: Oct 9, 2019
  9. Oct 9, 2019 #9

    Rob702Martinez

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    It's CATO.
     
    Last edited: Oct 9, 2019

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