Log Book for February 22, 2008

Engineering Report

Chris Ostafew / Aravind Seeni / Zahra Khan Reporting


Generator/Electricity:

Wendy

Hobbs Meter: 3189.5 hrs [ +7 hrs since yesterday ]

Voltage: 112 VAC

Frequency: 60 Hz

Oil Level: full

Oil Pressure: 30 PSI

Water Drained: yes


Notes/Comments:
Wendy started without difficulty after having had her time off. We
took a quick peek at the continuity of the on-board tank fuel level
switch and found that it correctly opens when the fuel level approaches
full. We suspect a the aux fuel shutoff solenoid to be faulty and will
try to confirm this tomorrow (pending approval).


Xantrex Inverter/Dynasty Batteries:

Time Voltage (Temp Comp) Load Temp Generator Running?
07:59 24.0 04.0 08
No
16:32 24.8 16.3 08
No
18:13 21.7 07.5 09
No



Fuel Status (as of 16:32):

Diesel:

Approximate Reading: 7/8




Propane Tank:

Approximate Reading: 88% (880 gallons = 3331.2 L)




Gasoline:

Quantity Remaining: 70 gallons = 265.0 L [ no change since yesterday ]




Oil:

GenSet Quantity: 6 quarts [ no change since yesterday ]

ATV Quantity: 5 quarts [ no change since yesterday ]

[*] V'ger Quantity: 1 quart [ no change since yesterday ]



Water Status:

Outside Potable Water Tank Level: 20.8 gallons = 78.7 L

Trailer Potable Water Tank Level: 6.2 inches from the base

Potable Water Meter Reading: 26148.9 gallons = 98984.0 L
[ +18.7 gallons since yesterday ]

Out to Toilet Meter Reading: 8115.6 gallons = 30720.8 L
[ +11.8 gallons since yesterday ]

In to GreenHab Meter Reading: 7823.0 gallons = 29613.2 L
[ no change since yesterday ]

Dishwasher Runs: 0


Notes/Comments:
Outside potable and trailer water tank measurements are in units of
inches from the base of the tank.


GreenHab:

Crops Watered: no


Crop Condition:
Very good. Lettuce and radish to be harvested soon.


Observatory:

not used


Transportation:




Kawasaki ATVs

ATV 1
Used: no
Oil Checked: no
Tire Status: OK

ATV 2
Used: no
Oil Checked: no
Tire Status: OK

ATV 3
Used: no
Oil Checked: no
Tire Status: OK




Mars Surface Suits:
No suits used in EVAs today as it was windy and cold with dark, ominous
clouds.




GreenHab:
Inside
Time Temp Hum
17:20 70F 17%
Outside
Time Temp Hum
17:20 45.9F 51%




Upgrade Work:
Installed the dual diesel supply lines. Troubleshooted and revived
remote Xantrex monitoring (on laptop in crew area).

Working on troubleshooting weather datalogger - no leads as of yet.


Notes/Comments:
Requesting permission to remove aux fuel solenoid from Wendy (during
her off time) to troubleshoot the fuel overflow.

We're considering investigating the automatic genset start/stop feature
of the Xantrex. Has it ever been debugged since it stopped working?