Crew 315 EVA Report 30-04-2025
EVA # 18
Author: Michael Andrews
Purpose of EVA: Several objectives were completed during this EVA:
· Engineer is to perform a 3D scan of a rock sample and use Starlink to send that file to CapComm.
· Engineer is to return the rocks collected at Somerville Overlook from a previous EVA.
· HSO is to perform more drone flight testing at the Somerville Overook area.
· HSO and Engineer are to explore a footpath into Candor Chasma for future EVAs.
· Artist is to recreate a Apollo golf photo near the station for his art project. Note: Crew Artist Gagnon will not participate in the objectives above but will suit up and exit the airlock for the photo once the HSO and Engineer return.
Start time: 0902
End time: 1140
Narrative: The partial EVA Crew (Andrews and Koi) exited the airlock and proceeded to Somerville Overlook. At the site, Koi set up her drone and Andrews set up his 3D scanning rig and tent.
Koi gathered a suitable rock sample and then took several videos of the surrounding landmarks and Andrews while he was scanning. Andrews plugged in Starlink, calibrated the rig, performed three scans of Koi’s sample (1 geometry, 1 texture, and 1 reoriented texture), aligned them (automatically and manually), and created a 3D mesh of the sample. The entire process took about 45 minutes. The files were uploaded to the crew’s shared Google Drive via Starlink, and the team packed up and headed out.
At Candor Chasma, the pair of crew members explored the area for about 10 minutes. The route taken will make future EVAs to the area easier.
Upon returning to MDRS, Crew Artist Gagnon exited the airlock and joined the crew in some photos. He recreated the Apollo golf photos and videos using an engineer-crafted club and tennis ball. Koi filmed the event via drone, and also took video of the Hab’s exterior for Andrews. The team collectively entered the airlock at 1140 and ended the EVA.
Destination: Somerville Overlook and entrance to Gateway to Candor
Coordinates (use UTM WSG 84):
· Somerville Overlook – Easting 522400, Northing 4253000
· Gateway to Candor – Easting 519800, Northing 4251500
EVA Participants: Michael Andrews (EVA Lead and Crew Engineer), Urban Koi (HSO), and Tim Gagnon (Crew Artist)
Road(s) and routes per MDRS Map: Exit MDRS onto Cow Dung Road, and proceed north until Galileo Road. After reaching Compass Rock, proceed along Galileo Road all the way until reaching Somerville Overlook. Next the crew will return along Galileo Road until Compass Road, then will proceed down an unmarked road heading south until reaching the Gateway to Candor. Once done walking at this destination, the crew will take Galileo Road west until reaching Cow Dung Road, and then head south along Cow Dung Road until reaching MDRS.
Mode of travel: Take Perseverance rover to the destinations mentioned above and then walk around each area on foot, traveling no more than 1 kilometer from the rover.
Vehicles you will be using (If applicable): Perseverance