Chute release parachute protection blanket

Discussion in 'Recovery' started by base890, Jul 6, 2019.

Help Support The Rocketry Forum by donating:

  1. Jul 6, 2019 #1

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    So I couldn’t get my JLCR to keep my parachute bundle closed no matter how I packed, even with just moderate shaking and pulling my packjob would start to slip and as slippery as the fabric is it would eventually come all apart.
    Being familiar with the violence of falling objects (skydiver and BASE jumper and your rocket videos), I knew it wouldn’t cut it.
    I enjoy sewing and was making my own stuff anyway so I came up with this for my level one flight.
    I brought this up in another thread but didn’t want to further hijack that...
    It works great and while I continue to refine the design I have something that works. What follows is how I pack my 40” 50% hemispheric parachute into this blanket.
     
    Last edited: Jul 6, 2019
  2. Jul 6, 2019 #2

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    Overall layout

    E44E136F-4634-4B01-B158-6287AC069FAC.jpeg 560E258A-0D4F-42C8-A2A1-1F848B141A47.jpeg 79573E7A-9572-4096-B3A6-691FE8418453.jpeg 15B693A5-F9A5-4012-B971-43AB53F42984.jpeg
     
  3. Jul 6, 2019 #3

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    Folding the chute

    B0A6EFA1-60F5-4C98-8AA4-7F5E45E02F57.jpeg 5017430B-EE82-4CB5-98D6-D9B2EEC7A1EF.jpeg 3B5D03F6-4603-45FD-B0D6-A566830AF756.jpeg 820CE165-432E-4605-8CED-27E9D7BC2B93.jpeg 8A18AD6C-533E-4BC2-872D-1F035F496AC8.jpeg
     
  4. Jul 6, 2019 #4

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    Rolling up the blanket

    7E513209-570E-4945-94DB-4A9F90D402A6.jpeg D059464A-3EE6-4DD1-99AE-CFB3E23E78F6.jpeg 87716699-7AD2-4A92-B751-0D6A7665B1FB.jpeg 5F56C59C-3F06-4223-8640-43F3DA7C5C78.jpeg 9DF1EE48-0A51-43D4-A610-B7AE9C0DEE71.jpeg
     
  5. Jul 6, 2019 #5

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    The tether goes to the nose cone’s cord so the JCLR is has its business end maximally protected...

    0A849828-134B-48FD-9497-D86CBC4F435D.jpeg B813F5C5-9A77-4058-9C0A-C33183CC0500.jpeg 96A67F62-45BE-447E-A808-422F0D50E4C7.jpeg 1A17EFE7-93BE-4337-816A-F0B738485461.jpeg
     
  6. Jul 6, 2019 #6

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    Arm the JCLR and complete the prep. Pull test video won’t upload here but I can really yard on the cords and shake violently with the bundle staying put.

    03D13299-BE2A-4415-8CF9-B22EC8E96C6D.jpeg 6ADA6B68-258A-4D07-A548-05411C8DEEC3.jpeg D97E1102-AD92-46F1-A146-AD231C73E258.jpeg 7995EFEF-2F2C-4E0E-8FB7-878F466141BC.jpeg
     
  7. Jul 6, 2019 #7

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    02798775-8F3E-4928-919E-779D8B26B0FC.jpeg

    The end result easy recovery so smiles between me and my daughter returning from the short walk. Parachute and JCLR good as new.
     
    Joe Rocket 97, YodaMcFly and dhbarr like this.
  8. Jul 6, 2019 #8

    timbucktoo

    timbucktoo

    timbucktoo

    Well-Known Member Staff Member Global Mod

    Joined:
    Jun 13, 2014
    Messages:
    6,302
    Likes Received:
    637
    Gender:
    Male
    Location:
    Cocoa Beach
    I’d be concerned with bp powder burning the rubber band and/or exposing CR to BP gases. Most chute releases I’ve seen/used are wrapped inside blanket.
     
  9. Jul 6, 2019 #9

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    I had those thoughts too and almost sewed a flap that would cover the band only during ejection, couldn’t find a configuration that wouldn’t have a possibility of blocking the release of the band which would be a safety risk vs early deployment. If you try burning the rubber band you’ll find it really takes a while before it weakens to the point of snapping- I think it’s unlikely to be a true problem but I understand your theory well.

    In a small body tube I will wrap the whole burrito in a bit of wadding to prevent the rubber and from binding in the tube.
     
    timbucktoo likes this.
  10. Jul 6, 2019 #10

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    The fabric is a ripstop 7oz kevlar/nomex blend.. feels like canvas. Hemmed edges and double stitching with Kevlar thread.
     
  11. Jul 6, 2019 #11

    timbucktoo

    timbucktoo

    timbucktoo

    Well-Known Member Staff Member Global Mod

    Joined:
    Jun 13, 2014
    Messages:
    6,302
    Likes Received:
    637
    Gender:
    Male
    Location:
    Cocoa Beach
    Understand. Cool design. Just my thoughts. Have you tried smaller bands to keep chute from slipping out?
     
    CzTeacherMan likes this.
  12. Jul 6, 2019 #12

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    Yeah, so tight I though I might break the pin socket/receiver. The tighter I wrapped the faster the bundle deteriorated to slip out one of the ends. Like a bar of wet soap! I guess that's what I get for making the chute out of zero porosity parachute fabric (from ParaGear.com). I am addicted to everything about this fabric however (from all the dopamine days of packing for base jumps etc.). This pursuit can now feed the nylon addiction in a much safer way now that I'm a father!
     
    YodaMcFly likes this.
  13. Jul 6, 2019 #13

    Joe Rocket 97

    Joe Rocket 97

    Joe Rocket 97

    Well-Known Member

    Joined:
    Jun 30, 2018
    Messages:
    134
    Likes Received:
    19
    Gender:
    Male
    want to sell a couple ?
     
  14. Jul 6, 2019 #14

    base890

    base890

    base890

    Forum Supporter TRF Supporter

    Joined:
    Jun 23, 2018
    Messages:
    158
    Likes Received:
    54
    Gender:
    Male
    Location:
    Pennsylvania
    Sure, just let me know the specs you want (size of the parachute bundle and rocket diameter. Understand this takes me a long time and I can probably only turn out two a week given my schedule.
     
  15. Jul 6, 2019 #15

    dhbarr

    dhbarr

    dhbarr

    Amateur Professional

    Joined:
    Jan 30, 2016
    Messages:
    5,890
    Likes Received:
    697
    ZP is silicone-doped, right? Yeah, that's really slippery.
     
    base890 likes this.
  16. Jul 6, 2019 #16

    Onebadhawk

    Onebadhawk

    Onebadhawk

    Well-Known Member

    Joined:
    Jan 11, 2013
    Messages:
    5,707
    Likes Received:
    222
    That's some pic of you and your daughter running and laughing..
    Super sweet..
    You make certain not to lose that pic...
    You'll really enjoy it in the long range future..

    Teddy
     
    base890 likes this.
  17. Jul 14, 2019 #17

    Joe Rocket 97

    Joe Rocket 97

    Joe Rocket 97

    Well-Known Member

    Joined:
    Jun 30, 2018
    Messages:
    134
    Likes Received:
    19
    Gender:
    Male
    I just ordered two of Craig’s chute release blankets on Wednesday and received them on Saturday. Best addition to my recovery protection I have bought to date. Top notch service and product . You won’t be disappointed in these in any way. I plan on getting a bunch more in the near future
     
    Crumb fire likes this.

Share This Page