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Parachute Drag Coefficients
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The drag coefficients of the parachutes were calculated–drogue was calculated using data between 7k and 8k meters, while main was calculated at landing. These drag coefficients are effective for the flight, they also factor in the drag on the mission package as well as
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interactions with the fin can.
Here is a graph of the effective drag of the main as felt by the mission package:
Drogue Effective CD between 7k m and 8k m: 0.48
Main Effective CD at landing: 1.33Here is a graph of shock loading:
E-match voltage anomaly
Post flight data review notes abnormal voltage readings on Telemetrum apogee channel. Despite commanding an apogee event, the Telemetrum continued reading 4.2V across the channel for the remainder of flight. The e-match should register a significant increase in resistance within 10 mS of exceeding it's no-fire current of no fire current here. This suggests that the initiator misfired. A fishbone analysis was conducted to classify the nature of the issue. Evidence collection is ongoing, however it appear probable that the Telemetrum e-match is internally shorted, either autogenously or to the piston.
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