Launch Rehearsal Notes 1/8/2020 Joe Rowell
Away team: Luke, Lili, Joe
Ground team: Emily, Ahmad
Utilize launch procedures/integration checklist
Launch Rehearsal
BBC covered charging port of cameras
Battery in avionics tower was dead, replaced with charged battery
Hooked up battery, possibly with wrong polarity, potentially frying telemega
Reversed polarity of battery and telemega and pyxida turned on
Solid core wire to telemega switch terminal disconnected, reason unknown
Groundstation was unable to turn on cameras through pyxida (we think camera fault)
Camera with BBC no longer turns on, going forward with launch rehearsal without camera
Wiring is loose throughout avionics tower (!!!!!!!!!!!!!!!!!!!!!! angery lili)
MARSA battery is hitting the camera case, swapping battery holders should fix
Ribbon cable from BBC is interfering with the ‘tube’
After loading avionics tower into the “tube”
MARSA successfully turned on
Telemega did not connect automatically to Luke’s away team telemega
Telemega did automatically connect to Emily’s launch line telemega
Upon selection use monitor idle instead of monitor flight in AltOS
Right now, telemega only connects when AltOS is using Monitor Idle, not when using Monitor Flight
Telemega has red led flash (receiving invalid packets) when monitoring flight
Pyxida successfully turned on and connected to groundstations (backup voltage temporarily turned green then back to red for away team 6.1.2 Pyxida (Lili’s)
Changes Made
Team changed the order of the switch terminals to (from left to right looking up): MARSA, Telemega, Pyxida Main, Backup
Changes to Make
Replace solid core wire for pyxida main/fix screw terminals
Fix blue and white twisted wires on the screw terminals
Make sure wires are secure before launch ops
Need a role for people to charge and bring all batteries before launch ops
Need charging cables for the nonstandard polarity batteries
fix all batteries
Bring multimeter
Replace hex key screws for battery casing with something more standard done
Possibly extend MARSA ground wire and power
locate marsa battery charger
Log max voltage of batteries, ensure all are nonstandard polarity or have an obvious system differentiating polarities
Swap MARSA battery holder to make fit
Get zip ties for cameras
1 Comment
Unknown User (astrocrg@mit.edu)
Monitor idle vs. Monitor Flight on AltOS depends on the orientation that you activate the TeleMega. If you turn the TeleMega on when it is vertical, it will go into startup and 'Pad Idle' mode, which is viewed by selecting 'Monitor Flight'
If the altimeter is turned on while sideways it will automatically inhibit all pyrochannels until it is power cycled. This is good for safety, but would result in a loss of mission in flight. If the altimeter is turned on sideways you can check its status by 'Monitor Idle'