Timeline for The Loose Astronaut
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Dec 2, 2016 at 14:36 | history | mod moved comments to chat | |||
| S Dec 2, 2016 at 14:36 | comment | added | called2voyage♦ | Comments are not for extended discussion; this conversation has been moved to chat. | |
| Nov 30, 2016 at 15:34 | vote | accept | Omaha | ||
| Nov 30, 2016 at 11:08 | comment | added | David Richerby | It seems very unlikely that the robot arm would be useful. If we're in a situation where SAFER was insufficient, the astronaut was initially travelling at more than 3m/s. If they did that for even three seconds, they're already 10m away and, since SAFER didn't stop them, they're still moving away. The arm itself is only 17m long at maximum extension and I assume it moves pretty slowly. | |
| S Nov 30, 2016 at 10:06 | history | edited | Nathan Tuggy | CC BY-SA 3.0 |
Fixed spelling/grammar.
|
| Nov 30, 2016 at 9:59 | review | Suggested edits | |||
| S Nov 30, 2016 at 10:06 | |||||
| Nov 30, 2016 at 7:14 | comment | added | Adwaenyth | @JimGarrison the best possible way to "throw" something would be to put it "below" your feet and then "jump" away from it. That way you get maximum force out of it with minimal angular momentum. The problem would be aligning yourself right, so that you actually propel yourself in the correct direction to ease your recovery. Even then it is a huge risk because you could still drift completely out of control as you have to guess the right momentum visually... but instead of drifting away unrecoverably it would still be worth a try. | |
| Nov 30, 2016 at 6:09 | comment | added | Jim Garrison | @jpa Sure, we're designed to sense the direction of gravity and counteract it. So you're saying the floating astronaut could execute a diver's maneuver to reorient himself so his feet were pointing away from where he wanted to go, then place a wrench or other object on his boot soles and extend his legs to "push off" from the wrench. Try that in an inflated space suit... | |
| Nov 30, 2016 at 6:04 | comment | added | jpa | @JimGarrison How about with feet, i.e. jumping upwards? On earth, people manage to jump without spinning and get about 3m/s delta-V. | |
| Nov 30, 2016 at 2:50 | comment | added | Jim Garrison | Throwing something is useless. The astronaut could never apply the force precisely along a line through their own center of gravity. Throwing mass would mostly impart angular momentum, I.e. just make them spin, compounding the problem. | |
| Nov 29, 2016 at 21:31 | comment | added | hobbs | Also, correct me if I'm wrong, but I think the Zvezda only has fuel for a couple m/s delta V (and a fresh Progress or ATV not a ton more), so it may be less useful than you think. The ISS is too big for "gracefully swooping in". | |
| Nov 29, 2016 at 19:15 | comment | added | Organic Marble | The astronaut may be able to grab the robotic arm, but the robotic arm could not grab the astronaut. The arms can only grab items that have grapple fixtures mounted on them. Astronaut's EVA suits do not. | |
| Nov 29, 2016 at 17:55 | history | migrated | from astronomy.stackexchange.com (revisions) | ||
| Nov 29, 2016 at 16:37 | history | answered | zephyr | CC BY-SA 3.0 |