Overview
This parachute is deployed near apogee to enable a rapid, controlled descent in compliance with section 3.1.1 of the DTEG.
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Timeline
- The black, dark blue, and blue sets of lines represent the different vehicle weights (157, 167, and 177 lbs)
- The different lines within those sets represent the different launch angles
- These sets of lines follow the ascent and descent without parachute
- The light blue steady state descent lines represent descent with parachute
Design
Design tasks
- Write up analysis up until this point
- Recalculate forces, dynamic pressures, and descent rates for updated rocket
- Find drogue Cd
- Size drogue
- Pick geometric ratios ( ieeexplore.ieee.org/document/7943854/ )
- Calculate stresses and forces in components
- Pick fell and hem types
- Calculate design factors
- Calculate required textile strengths
- Find most suitable cloths and tapes
- Find suppliers and order textiles
Other tasks
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| Task | Date Completed or Estimated |
|---|---|
| Drogue Design | Completed ~1/12/2018 |
| Test Article Fabrication | Completed 1/22/2018 - 1/25/2018 |
| Test Article Wind Tunnel Test | Est. 2/5/2018 |
| Final drogue fabrication | Est. 3-4/2018 |
| Final drogue acceptance testing | Est. 4-5/2018 |