Crew 262 EVA Report Mar 1st

Crew 263 EVA Report 03-01-2022

EVA # 11

Author: Nicolas WATTELLE

Purpose of EVA: Atmospheric Experiment maintenance (battery change, recovering data from PurpleAir)

The atmospheric experiment includes 5 devices: LOAC (Light Optical Aerosol Counter), an Electrical Field Mill, Purple Air (Aerosol Counter), Mega-Ares (Electrical Field Counter) and a Weather station. The aim of this experiment is to do testing of Martian-Atmospheric Study Equipment and their maintenance by human operators. Performing their maintenance and set-up while wearing spacesuits and following EVA protocols is the purpose of the experiment. All devices are located at the same place.

Batteries for the LOAC, MegaAres, the Electrical Field Mill and Purple Air needs to be changed daily. Hence, during this maintenance EVA, the 3 batteries (the Field Mill and MegaAres use the same battery) needed to be replaced.

Start time: 08:59

End time: 09:19

Narrative: EVA Participants entered the airlock at 08:57. Depressurization ended at 09:02.

The EVA participants arrived at the Atmospheric Experiment location at 09:06. The batteries of the LOAC and MegaAres were changed. Valentine was in charge of changing LOAC battery. Nicolas changed the MegaAres battery. In order to recover PurpleAir data (because we can not pull out the SD card during EVA), Mathéo took it off the mast and took it back to the station. The device will be put back on tomorrow.

At 09:11, the participants left the atmospheric experiment location.

At 09:15, the participants arrived at the Hab and entered Airlock.

09:20, pressurization over.

Destination: Atmospheric experience site (at intersection between Cow Dung Road and Entrance Road)

Coordinates (use UTM NAD27 CONUS): 518288 E, 4250586 N

Participants : Nicolas Wattelle (EVA Leader), Mathéo Fouchet, Valentine Bourgeois. HabCom was Marine Prunier.

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