Fleet Configurations
Deployments
Gliders
Projects
Payload Bays
Instruments
Users
API
Log In
Deployment ru29-20200908T1623
Pilot Notes
Stalled for abort analysis from SBU_01, happened on Donglai's 350 m glider as well Looking at code beh abort stalled for doesn't really seem like it does anything useful. Kind of says if m_speed hasn't changed for x sec, abort. m_speed can be halted by a surfacing. I would increase your stalled for abort timers to maybe 40 minutes? Assuming they were 30. m_speed gets zeroed near surface, glider dives, seconds later it gets called to surface, doing a little nothing dive m_speed stays 0 through the nothing dive, minutes are eaten long surfacing 20 min takes a bit to get off surface u_reqd_depth_at_surface (more on this later) and 30 min goes by --> abort u_reqd_depth_at_surface - Let's set this to 3.5 m in your autoexec.mi. 7 while very safe and conservative is not great on a few levels with your glider. m_speed gets set to 0 because of it near inflections partially because m_battpos does not move until we are 'diving' not 'at surface'. Battery stays at neutral positions until we clear 7 m so pitch is low. When pitch is low dead reckoning gets its knickers in a bunch. Normally we set this once we know pressure sensor is stable but in your case with the resets it was getting toggled back.
Category
Informational
Alert
Action Needed
Action Taken
Operations
Update
Credentials Required
Username
Password