EVA Report – February 9th



Crew 274 EVA Report 09-02-2023

EVA # 12

Author: Nicholas S. Pender, HSO

Purpose of EVA: Redeployment and data collection of EEVAC-1 (supply cache).

Start time: 10:00 AM

End time: 11:30 AM

Narrative: EVA #12’s purpose was to redeploy EEVAC-1 (the supply cache) located at coordinates N4248400, E519300 back to the MDRS habitat. Performance metrics collection and final condition observations of the cache were also conducted. EEVAC-1 was found in good condition. The solar panels held up surprisingly well given the high winds from the previous evening. We also collected the final data set on the orange radiation experiment led by Commander Sarah Guthrie. The EVA itself went very well, with no encounters with the public. One aspect that made this EVA different from others was the ingress process of the cache. Given the size of the cache, only two crew members could enter the airlock at a time. Noah and Salina ingressed first, carrying the solar panels and orange experiment materials. Nick and Tyler ingressed second carrying EEVAC-1. Listed below are the collected metrics for both experiments:

EEVAC-1 Metrics

  • Inside Temp (Thermostat): 67.4 F
  • Inside Temp (Data Logger): 62.7 F
  • Outside Temp: 57 F (likely due to position in sunlight)
  • Battery Level: 4 + 1 (charging)
  • Power Consumption: 0W
  • Total Consumption: 0.00 kWh

Orange Metrics

  • Inside Temp: 61 F
  • Outside Temp: 50 F
  • Inside radiation Lvl: 0 mSv
  • Outside radiation Lvl: 0 mSv

Destination: South on Cow Dung Road.

Coordinates (use UTM WGS 84): N4248400, E519300

Participants: Nicholas Pender (HSO), Noah Loy (Astronomer), Salina Pena (Astronomer), Tyler Hines (Greenhab)

Road(s) and routes per MDRS Map: EVA #12’s (map provided) purpose was to drive to EEVAC-1 deployed at N4248400, E519300 via south on Cow Dung Road near Zubrin’s Head.

Mode of travel: Rover: Spirit/Opportunity

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