TachoLycos
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- Joined
- Nov 23, 2014
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Launched a new rocket yesterday. 65", 4" body tube on a I284WT. Great flight on the way up. Then the problems started.
No apogee event. No main event. 2 stratologger sl100 altimeters. One used as primary and set at apogee +1 for drogue and 600 feet for main. Redundant set at apogee +2/500 feet. Both altimeters beeping on the ground before and after flight. None of the 4 Jtek e-matches burned. They worked the day before for multiple ejection tests. New batteries for flight. ~9.5V on both batteries. Continuity on all the wires checked after the flight. Downloaded the flight afterwards. Primary altimeter showed the whole flight to 2400 feet and showed events at apogee +1 and at 600 feet. Redundant altimeter showed a power loss and did not collect good data(showed an apogee on the graph of 65000 feet lol). <<reason for redundancy.
Both altimeters have been used for 10-15 flights including a flight to 10,000 feet a couple months ago.
Any ideas on what went wrong with the primary altimeter? Going to replace both of these, recommendations for replacement?
Thanks,
Chris
Picture from flight attached.
No apogee event. No main event. 2 stratologger sl100 altimeters. One used as primary and set at apogee +1 for drogue and 600 feet for main. Redundant set at apogee +2/500 feet. Both altimeters beeping on the ground before and after flight. None of the 4 Jtek e-matches burned. They worked the day before for multiple ejection tests. New batteries for flight. ~9.5V on both batteries. Continuity on all the wires checked after the flight. Downloaded the flight afterwards. Primary altimeter showed the whole flight to 2400 feet and showed events at apogee +1 and at 600 feet. Redundant altimeter showed a power loss and did not collect good data(showed an apogee on the graph of 65000 feet lol). <<reason for redundancy.
Both altimeters have been used for 10-15 flights including a flight to 10,000 feet a couple months ago.
Any ideas on what went wrong with the primary altimeter? Going to replace both of these, recommendations for replacement?
Thanks,
Chris
Picture from flight attached.