Page History

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• To create the lightbulb shape
• Material might bulge in between reefed sections 

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Wires

• Making sure ematch to long wire attachment is more secure (soldering, HEAT SHRINK)
• Need to determine why wire experienced force
• Make sure wire is long enough
• Make sure enough of wire comes out of bag so there isnt pulling before bag opens

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1. Maintain one reefing line at the bottom, accept that the diameter will be bigger than we hoped
1. Accept up to 5.5 ft drogue
2. Multiple horizontal reefing lines, stacked up the parachute, potentially connected
3. One reefing line, pleating the sides of the parachute before running the reefing line through

Problem: Pyro wires are unprotected and snapped during tow test

1. Secure wires better: solder connections and use heat shrink tubing, run wire and some rope through the heat shrink
1. Move rope up to where the line cutters are attached to reefing line
1. Braided kevlar (bc that’s what we’re using for the parachute lines and it’s what we have in lab)
2. Solder and heat shrink the line cutter wires to the ignition wires
2. Use more wire, ensure there’s extra length 
1. 1.5x length we’re expecting
1. 25.5 ft (1.5 times MPT riser)

Problem: Parachute was singed where the line cutter was

1. Make a bag of the fire-retardant nylon fabric to cover the line cutter

11/17/2024 - Redesign of Reefing Prototype

Problem: Can’t reef the parachute as small as we were hoping

1. Maintain one reefing line at the bottom, accept that the diameter will be bigger than we hoped
   1. We can accept up to a 5.5 ft drogue and stay within the 65-165 fps descent rate specified by Spaceport
   2. This assumes the C_D stays at 2.2 (which is doubtful)
2. Multiple horizontal reefing lines, stacked up the parachute, potentially connected
   1. Image Added
3. One reefing line, pleating the sides of the parachute before running the reefing line through
   1. Image Added

Problem: Pyro wires are unprotected and snapped during tow test

1. 1. Secure wires better: solder connections and use heat shrink tubing, run wire and some rope through the heat shrink
      1. Move rope up to where the line cutters are attached to reefing line
         1. Braided kevlar (bc that’s what we’re using for the parachute lines and it’s what we have in lab)
      2. Solder and heat shrink the line cutter wires to the ignition wires
   2. Use more wire, ensure there’s extra length 
      1. 1.5x length we’re expecting
         1. 25.5 ft (1.5 times MPT riser)

Problem: Parachute was singed where the line cutter was

1. 1. Make a bag of the fire-retardant nylon fabric to cover the line cutter

Image Added