PartManufacturing StatusResponsible Engineer
Control Line Reefing PartCompletedAlex Chen



Purpose:

The control line reefing part holds the line cutters and cuts the reefing line at 1500 ft.

Requirements:

  • Must hold the line cutters such that they have no displacement or rotation

  • Must fit on the piston and under the u-bolt without interfering

Details/Design:

Material: Aluminum 6061 T6

Mass (from CAD model): 0.15 lbs

Safety Factor: tbd


The line cutters reefing part contains the line cutters and cuts the control line at 1500 ft.  It has two manufactured holes and a hollow interior in order to fit the line cutters.  The control line is threaded through a hole in the top and the bottom.  The structure contains a central tapped hole to screw onto the piston.

FEA:

tbd

Manufacturing:

Plan

  1. Turn on lathe and then follow with mill until part neets dimensions.
  2. Tap center hole


Testing:

  • Ground testing:
    • During the first ground testing, line cutters jolted upwards during piston deployment and broke the 3D printed control line reefing part.  Part was then redesigned and replaced to be aluminum.
    • During the second ground testing, aluminum part held the line cutters successfully
  • Wind Tunnel Testing:
    • tested the line cutters' ability to cut the control line.  Test was successful.
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