AckSed Posted Wednesday at 09:26 PM Share Posted Wednesday at 09:26 PM 1 hour ago, StrandedonEarth said: Fuel cells might finally become cost-effective… Funny story about fuel-cells: the NaFion polymer used as the substrate for the semi-permeable membrane in a lot of experimental fuel-cells (and the nitrogen-extracting cell I posted about a few weeks back) is the most expensive part. It's due to having to use elemental fluorine gas to make the polymer. Quote Link to comment Share on other sites More sharing options...
darthgently Posted Wednesday at 09:50 PM Share Posted Wednesday at 09:50 PM 2 hours ago, farmerben said: Platinum wiffle balls from space. Wiffle balls have the added advantage of being self-orbiting (maybe?). You’d just have to collect them from the salt flats or wherever they were targeted. Would they burn up? Or would they slow enough in the thinner higher altitudes to never get quite hot enough? Quote Link to comment Share on other sites More sharing options...
darthgently Posted 12 hours ago Share Posted 12 hours ago (edited) NASA Artemis Logistics Studies https://spacenews.com/nasa-awards-artemis-logistics-studies/ SLS in flux https://spacenews.com/sls-in-transition-from-biden-to-trump/ Edited 12 hours ago by darthgently Quote Link to comment Share on other sites More sharing options...
darthgently Posted 12 hours ago Share Posted 12 hours ago Quote Link to comment Share on other sites More sharing options...
AckSed Posted 10 hours ago Share Posted 10 hours ago How an engineering camera on Mars Express became a capable science instrument: https://arxiv.org/abs/2410.02999 tl;dr slap a cheap camera on your probes with the software to send images back, you may just learn something. Quote Link to comment Share on other sites More sharing options...
darthgently Posted 5 hours ago Share Posted 5 hours ago Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted 4 hours ago Author Share Posted 4 hours ago Glad to see you all here! Been a weird couple of days. At whoever is now hosting... Thank you for keeping the lights on! On to the 'science': Quote Link to comment Share on other sites More sharing options...
magnemoe Posted 2 hours ago Share Posted 2 hours ago 1 hour ago, JoeSchmuckatelli said: Glad to see you all here! Been a weird couple of days. At whoever is now hosting... Thank you for keeping the lights on! On to the 'science': I assumed the ball is to keep the nitrogen in as its not absorbed as well in water as co2. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted 1 hour ago Author Share Posted 1 hour ago 8 minutes ago, magnemoe said: keep the nitrogen The part I don't get is how they transfer the nitrogen ball to the can with the nitrogen still inside. It has to be a soluble plug of some kind. Quote Link to comment Share on other sites More sharing options...
darthgently Posted 46 minutes ago Share Posted 46 minutes ago 1 hour ago, JoeSchmuckatelli said: The part I don't get is how they transfer the nitrogen ball to the can with the nitrogen still inside. It has to be a soluble plug of some kind. The ball could be put in the can and the can sealed within a pressurized area? Idk. A soluble plug seems viable. Quote Link to comment Share on other sites More sharing options...
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