Chute attachment to prevent spin and sway on descent to improve video

Discussion in 'Photo/Video Tips' started by BABAR, Feb 3, 2013.

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  1. Feb 3, 2013 #1

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

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    Posted this before, but reposting for a friend cuz I can't figure out how to send pics/attachments on PM messaging.

    This is a method of chute attachment which cuts down on the swaying and spinning on descent. I attach 4 separate shock cords inside the rocket, spread equally around the perimeter. Lots of ways to do this, in my case I cut a piece of same size body tube, make a single longitudinal cut and take out a little section, then re-roll it so it fits just inside the original tube. I attach the four kevlar cords to this equally spaced, and then shove this down like a thrust ring down the throat of the rocket. I use a slightly larger chute so I can put a spill hole in it, this prevents the chute from swaying as it "spills"

    Here is the diagram of the attachment: SpillCHute.jpg

    Here is the video


    I probably need a short shock cord on the nose cone segment, as the dangling nose cone I think imparts a pendulum motion.

    Tom
     
  2. Feb 3, 2013 #2

    luke strawwalker

    luke strawwalker

    luke strawwalker

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    Very interesting... Thank you!

    Later! OL JR :)
     
  3. Feb 3, 2013 #3

    CarVac

    CarVac

    CarVac

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    It looks like a lot of the stability comes from the digital image stabilization in post processing; I can see the time/date flopping around there in the corner.

    It is hard to compare without a video with a conventionally anchored shock cord, though.
     
  4. Feb 3, 2013 #4

    BABAR

    BABAR

    BABAR

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    The post processing was done by the YouTube video editor--- brain foof on my part in that I should have said "no" when asked if I wanted it. I am hoping to try forward and aft cameras on the DoubleOrNuthin 36" distance gap staged booster and sustainer sections respectively at the Memphis MidSouth Rocket Society launch Saturday Feb 16th at 1:00 p.m. I may modify the upper stage with the four shock cords and spill chute and see how it comes back. Kind of depends on winds. It is a D12-0 with outboard A6-4s on booster and D12-7 on sustainer. Gonna need a BIG spill hole if I want to see the sustainer (and my CAMERA) again.
     
    Last edited: Feb 3, 2013

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