MM49 - 2020-10-12
Tracker Type: WSPR
Powered by (1) 123 battery
trackerId : MM49
wsprCallsignId : Q4
gpsLockTimeoutMs : 150000 2:30
lhAltFtThreshold : 20000
hAlt.wakeAndEvaluateMs : 2700000 45:00
lAlt.wakeAndEvaluateMs : 180000 3:00
lAlt.stickyMs : 36000000 10:00:00
crystalCorrectionFactor : -400
systemClockOffsetMs : 7
Balloon and Payload
Single 52" TR9 sphere
22.6 gram payload
6.0 grams free lift
General Thoughts / Observations
The previous test flight (MM48) acted oddly by rising then descending, then rising again. I could not pin a cause for that, so I took a shot by adding more free lift, this time 6 grams. After a perfect launch, it rose to 6,500 feet, only to descend and repeat the up & down pattern that MM48 did.
I tested the material to see if it was gaining weight from humidity, that is not the case. The cause is still unknown at this time.
Thoughts for next time
More work needs to be done to understand the failure cause.