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Using the values in the spreadsheet, the shock force was found on OSCalc as shown in figure 7. For the drogue opening at 30,000ft, the upper bound of force is calculated to be 303.2 slugs*ft/s^2
Figure 7 OSCalc results
10/06/2024
We developed a concept for the reefing skirt.
Our concept is to stitch webbing onto the existing shroud line connections. Since there's already a connection point there for the lines we figured it would be a better place to stitch something else onto as compared to another point on the bottom edge of the parachute where the fabric is more fragile. The reefing line will be fed through all of these webbing loops and tied into a loop of the appropriate circumference to achieve our desired cross-sectional area.
We will have two line cutters at two points on the reefing line for redundancy and the wires to each cutter will be attached to the reefing line to hopefully prevent them from getting wrapped around as much.