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This is the juicy part of the whole announcement: "the crew of Polaris Dawn will conduct a spacewalk". That's going to be a major feat and important milestone f

This is the juicy part of the whole announcement: "the crew of Polaris Dawn will conduct a spacewalk". That's going to be a major feat and important milestone for Starship (and Dragon until then, of course).

regnerba 5y ago
Sounds like they will be using SpaceX designed EVA suites, not NASA ones (which wouldn't fit through the hatch I don't think).
_Microft 5y ago
... and since Dragon has no airlock, they will either: (1) have to add one, (2) have actual EVA suits for all crew memebers or (3) keep the rest of the crew in their flightsuits in the vacuum inside the capsule while the hatch is open during the EVA. If I had to guess, I would think that it is (3). This way they wouldn't have to carry a flightsuit and EVA suit for each of the crew members. The suits of the other crew members would still be connected to the capsule which takes the role of the environmental control and life support system.
- twic 5y ago
  From the press conference: > Menon: Since there is not an airlock on Crew Dragon, the whole crew will be exposed to the vacuum of space for the EVA. [1] > Gillis: For Polaris, "the suit that we're going to be designing will be a single suit that we would launch and then similarly use for the EVA." [2] Sounds to me like one crew member will wear the EVA suit for launch and for the EVA, and the other three will wear flight suits for launch and while the capsule is depressurised. So only one EVA suit, no changing suits in space, no airlock. [1] https://twitter.com/thesheetztweetz/status/1493277018968006656 https://twitter.com/thesheetztweetz/status/14932770189680066... [2] https://twitter.com/thesheetztweetz/status/1493273907251621891 https://twitter.com/thesheetztweetz/status/14932739072516218...
  - throwoutway 5y ago
    That’s even more interesting. I wonder if components inside the Dragon capsule need to be rebuilt to handle cold vacuum. Or is that a standard design?
    - jsmcgd 5y ago
      A vacuum inside a spacecraft is not necessarily cold, nor is the vacuum outside the spacecraft. Components may even begin to overheat in the absence of circulated air.
deleted 5y ago
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regnerba 5y ago

Sounds like they will be using SpaceX designed EVA suites, not NASA ones (which wouldn't fit through the hatch I don't think).

_Microft 5y ago

... and since Dragon has no airlock, they will either: (1) have to add one, (2) have actual EVA suits for all crew memebers or (3) keep the rest of the crew in their flightsuits in the vacuum inside the capsule while the hatch is open during the EVA. If I had to guess, I would think that it is (3). This way they wouldn't have to carry a flightsuit and EVA suit for each of the crew members. The suits of the other crew members would still be connected to the capsule which takes the role of the environmental control and life support system.

twic 5y ago
From the press conference: > Menon: Since there is not an airlock on Crew Dragon, the whole crew will be exposed to the vacuum of space for the EVA. [1] > Gillis: For Polaris, "the suit that we're going to be designing will be a single suit that we would launch and then similarly use for the EVA." [2] Sounds to me like one crew member will wear the EVA suit for launch and for the EVA, and the other three will wear flight suits for launch and while the capsule is depressurised. So only one EVA suit, no changing suits in space, no airlock. [1] https://twitter.com/thesheetztweetz/status/1493277018968006656 https://twitter.com/thesheetztweetz/status/14932770189680066... [2] https://twitter.com/thesheetztweetz/status/1493273907251621891 https://twitter.com/thesheetztweetz/status/14932739072516218...
- throwoutway 5y ago
  That’s even more interesting. I wonder if components inside the Dragon capsule need to be rebuilt to handle cold vacuum. Or is that a standard design?
  - jsmcgd 5y ago
    A vacuum inside a spacecraft is not necessarily cold, nor is the vacuum outside the spacecraft. Components may even begin to overheat in the absence of circulated air.

deleted 5y ago

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