157
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| April 17, 2019
| April 17, 2019
| Pigeon Point
| Pigeon Point
| 60.5 hours
| 60 hours, 33 minutes
| Demonstration of long-endurance marine tether. Float-only profile. Lost off the coast of San Luis Obispo county.
| Demonstration of long-endurance marine tether. Float-only profile. Lost off the coast of San Luis Obispo county.
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| June 1, 2019
| June 1, 2019
| Le Grand
| Le Grand
|
| 3 hours, 52 minutes
| Latex full altitude control. Recovered from near Mendota, California on June 1, 2019.
| Latex full altitude control. Recovered from near Mendota, California on June 1, 2019.
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|-
| August 5, 2019
| August 5, 2019
| Hollister
| Hollister
| 2 hours
| 2 hours, 0 minutes
| Second flight of in-house constructed polyethylene envelope. Recovered from near Tracy, CA on August 31, 2019.
| Second flight of in-house constructed polyethylene envelope. Recovered from near Tracy, CA on August 31, 2019.
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| Hollister
| Hollister
| 9 hours, 28 minutes
| 9 hours, 28 minutes
| First polyethylene tubing envelope. First SSI ZPB flight with full telemetry. First interstate Cycloon flight.
| First polyethylene tubing envelope. First SSI ZPB flight with full telemetry. First interstate Cycloon flight. Final location near Alamo, NV.
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[[Category: High Altitude Balloons]]
[[Category: High Altitude Balloons]]