This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.

Visit The Mars Society's home page Visit the MDRS home page The Mars SocietyMars Desert Research Station

Engineering and Systems Report - Crew 4
March 29, 2002

Jennifer Knowles and Matt Lowry

Water Systems: We refilled the water tank starting at 2:15pm and ending at 3:05pm; a total of 40 gallons was put into the tank. In addition, we fixed the leak by jerry-rigging an o-ring onto the water pump hookup, and it worked quite well. No leaking was noted this afternoon.

Power and Fuel: Nominal. We are down to one barrel of fuel, and Lamont has been notified of this. Generator maintenance and refueling is progressing normally.

EVA Equipment (including ATVs): This afternoon, Lamont came to base to take the large yellow ATV for the weekend. He also plans to come by tomorrow to pick up the other two as well. We figured out the problem with the Fourtrax-300; apparently, the air vent on top of the gas tank was closed, and this was easily rectified by opening the valve. Before this afternoon's ATV EVA, both ATVs were topped off with gas, and the Foreman-400's oil level was checked.

At the beginning of the ATV EVA, a crewmember's water mouthpiece and inner piping came off inside her helmet, with the result being that water spewed from her tank all over the inside of her helmet.

Three EVA suits (numbers 4,5, and 6) were experiencing trouble with their fans starting up. These three suits had their fuses replaced, and all but one appear to be functioning nominally now; the exception is suit #4. Options for repairing this suit will be investigated in the near future.

Safety: During entry into the Hab, the wind blew the airlock door into a crewmember's helmet. All is well.

Computers and Communications: Computers nominal.

During the afternoon pedestrian EVA, the two-way radio communication between the EVA team members was non-functional. However, com-link with HabCom was established and worked well.

We think the repeater is non-functional, and we plan to investigate in the near future.

General Maintenance & Waste Management: The trash was gathered from inside the Hab and removed. The trash pile outside must be removed soon, as it is reaching capacity.

Much work was performed on the Biolet system today. The hole at the base of the Biolet going to the outside has been plugged with a Styrofoam plug and duct-tape. Also, we replaced the ventilation tubing attached to the back of the Biolet, and this new tubing was attached to the appropriate ventilation pipe with duct-tape. It should also be noted that the Biolet is now fully functional for women.

The leach-field was rotated earlier today, and that seemed to stop the leakage of waste onto the ground. However, by mid-afternoon the leaking had begun again. It has also been noted that no waste is exiting through the designated outlet pipe, probably because it is all draining from the leach-field drum.

GreenHab: Plants in the Hab have been watered.

Maximum Outside Temperature: 93 degrees F

Minimum Outside Temperature: 29 degrees F