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

The Rocketry Forum

Help Support The Rocketry Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

BABAR

Builds Rockets for NASA
TRF Supporter
Joined
Aug 27, 2011
Messages
11,533
Reaction score
6,145
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
[video=youtube;S8CAg4pxI2I]https://www.youtube.com/watch?v=S8CAg4pxI2I&feature=player_embedded[/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
 
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.
 
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.

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:
Back
Top