Day: December 24, 2017

Crew 185
Operations Report Saturday 12/24/2017

SOL: 6

Name of person filing report: A.Passeron

Non-nominal systems:
– Generator :
We had the same problem over and over again with the generator. The battery is not charging while generator is on. At about 9:00pm, we unplugged the cable which connect the generator to the solar panel central unit, we jump started the battery and we turned the generator on. But the charge of the battery dropped and the generator had a second failure at rougthly 9:20pm. So the problem comes from the generator, not the central unit. At 8:10am, we jump started the generator again and turned it on.
At 9:10am, just before third failure, settings were :
+ Oil pressure : 47 psi
+ Speed : 1815 rpm
+ Battery charge : 6.4V
The generator had then a third failure at 9:20am.
Shannon and us agree with the idea of charging the battery during the day to run the generator during the night. Shannon brought two battery chargers at 4:35pm. We disconnected the battery from the generator and charged the battery at 4:50pm. We let the battery charge for two hours after the sunset. At 7:15pm, the charge of the battery was 60% while the SOC was 54%. We thus decided to connect the battery to the generator and it is working properly since then.

– Water shortage :
Crew aware of concern about water shortage. We use the shallow water from trailer tanks to water the plants of the GreenLab. Shannon brought an extra 100-gallon water tank to ease the water shortage. We pumped roughtly 60 gallons into the static water tank during the engineering check at 11:45am.

Generator (hours run):
Generator turned off at roughtly 8:00pm yesterday (first failure)
Jump-start done at rougthly 9:00pm yesterday
Generator turned on at rougthly 9:00pm yesterday
Generator turned off at roughtly 9:20pm yesterday (second failure)
Jump-start done at 8:10am
Generator turned on at 8:10am
Generator turned off at 9:20am (third failure)
Start charging battery at 4:50pm
Battery charge is 60% at 7:15pm
Generator turned on at 7:15pm

Solar— SOC
@ 7:15am : 0%
@ 8:10am : 0%
@ 9:10am : 1%
@ 9:20am : 2%
@ 10:00am : 3%
@ 11:06am : 8%
@ 12:57pm : 18%
@ 1:39pm : 100%
@ 2:55pm : 97%
@ 3:45pm : 92%
@ 4:38pm : 84%
@ 5:05pm : 78%
@ 6:05pm : 68%
@ 7:15pm : 54%

Diesel – 78%
Propane – 50%

Ethanol Free Gasoline (5 Gallon containers for ATV) – 2.5 Gallons (1 container remaining)

Water (trailer) – 20 gallons

Water (static) – 310 gallons

Trailer to Static Pump used – Yes (roughtly 60 gallons from the 100-gallon tank brought by Shannon)

Static to Loft Pump used – Yes

Water Meter: 50 gallons

Toilet tank emptied: No

ATVs Used: Yamaha blue Grizzly 350 #3
Oil Added? Yes
ATV Fuel Used:
# Hours the ATVs were used today: 03:00 hours
Notes on ATVs: ATVs were nominal.

Deimos rover used: No
Hours: 00:00 hours
Beginning charge:
Ending charge:
Currently charging:

Sojourner rover used: Assigned to director only.
Hours: 00:00 Hours
Beginning charge:
Ending charge:
Currently charging:

Spirit rover used: No
Hours: 00:00 Hours
Beginning charge:
Ending charge:
Currently charging: Yes

Opportunity rover used: No
Hours: 00:00 Hours
Beginning charge:
Ending charge:
Currently charging:

Curiosity rover used: Yes
Hours: 03:00 Hours
Beginning charge: 100%
Ending charge: 86%
Currently charging: Yes

HabCar used and why, where? No
Summary of internet: All nominal

Summary of suits and radios: All nominal

Summary of Hab operations: Water shortage prevention.

Summary of GreenHab operations: All nominal

Summary of ScienceDome operations: All nominal

Summary of RAMM operations: Not Operational

Summary of health and safety issues: Crew is Healthy

Questions, concerns and requests to Mission Support: