EVA Report – February 20th

Crew 275 EVA Report 20Feb2023

EVA # 6

Author: Alice Chapiron, EVA Leader and Crew Scientist

Purpose of EVA: The purpose of the EVA was to do photogrammetry of North Ridge with drones.

Start time: 9:02

End time: 11:50


09:02: Airlock closed.

09:09: Rovers Curiosity and Spirit unplugged. We then depart from the hab at 09:12.

09:14: Rovers parked at the right location near the Mega-Ares, METEO and Purple Air instruments.

09:30: Weather Station and Purple Air data copied. Batteries changed. New recording started. Mega-Ares data copied.

09:36: Beginning of the Mega-Ares test. We didn’t have time to finish all the test, so we preferred to continue with the EVA as it was not the main purpose of today.

09:50: Departure from the Mega-Ares, METEO and Purple Air instrument.

09:58: We had to stop to conduct radio tests because the EVA Leader had her antenna inside her helmet.

10:06: Parked at the right location, near the beginning of the gateway to Candor. Walking towards the desired location.

10:10: Arrival on site for the photogrammetry experiments.

10:23: Launching the drone and starting to place the markers coupled with the sample collection.

10:37: The hat of the Crew Scientist fell off, which slightly impaired her vision. The crew botanist secured her way to a safe place and then the problem was solved by removing the hat from the helmet. It was solved in 5 minutes.

11:01: The crew Scientist microphone got off her head. She could not hear clearly the others, neither talk to them. The Crew Botanist took the head of communication. They gathered with the Crew engineer who was nearby.

11:10: The crew Scientist put back the microphone to solve the problem, so the communication could continue safely. We went back to our activities.

11:20: Loss of contact. Both the EVA Leader and the Crew Botanist couldn’t speak nor be heard. The problem was certainly coming from the fact we were all on channel 1 following the previous problem. This was solved after running some tests and being advised by both HabCom and Mission Support. Departure from North Ridge towards the rover.

11:30: Back to the Rover

11:41: Arrival at the hab

11:50: End of the EVA

We forgot one small item on the trunk of Opportunity. It will stay there for the night and be retrieved tomorrow.

Note: At around 11:00, both the Crew Engineer and the Crew Botanist saw 4 pick-ups with around 10 people. They approached around 150 m from us and took pictures. We were really impacted and stressed by this event, while we had to remain focused on our tasks at the same time.

Destination: North Ridge (first we stop where the MegaAres and the METEO station are located)

Coordinates: N4252000 E519000

Participants: EVA Leader: Alice Chapiron (Crew Scientist), Quentin Royer (Crew Engineer), and Adrien Tison (Crew Botanist)

Road(s) and routes per MDRS Map: Cow Dung Road until North Ridge, near the intersection with “Gateway to Candor”, we then walked towards North-West for an estimated 600 meters from the rover.

(See map on the attached picture)

Mode of travel: Driving using Curiosity and Spirit

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