Minmus Taster Posted March 6 Share Posted March 6 I don't have Twitter access right now but Athena seems (?) to be on the surface. They aren't sure what's happening but power is being generated. Maybe a repeat of last time Quote Link to comment Share on other sites More sharing options...
tater Posted March 6 Author Share Posted March 6 1 hour ago, Minmus Taster said: I don't have Twitter access right now but Athena seems (?) to be on the surface. They aren't sure what's happening but power is being generated. Maybe a repeat of last time Yeah, their lander clearly has issues. Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 6 Share Posted March 6 2 hours ago, tater said: Yeah, their lander clearly has issues. No images yet but the lander seems to be on it's side again, darnit! I'd imagine this makes most of the payloads, which have to be deployed, useless. Quote Link to comment Share on other sites More sharing options...
darthgently Posted March 6 Share Posted March 6 Indications are strong that Athena is “not in the correct attitude” on the surface. Ouch. A lot of ppl saying it is too skinny and tall but I’m betting on the guy who thinks they aren’t cancelling enough horizontal prior to touchdown. Either touchdown is occurring before they think it should or there isn’t enough gimballed cosine thrust leftover for the horizontal cancellation after the required vertical deceleration takes its bite out of the budget or similar. I have no particular reason for leaning this way other than it doesn’t seem like the lander is all that tall and skinny given the stance of the legs Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 6 Share Posted March 6 1 minute ago, darthgently said: Indications are strong that Athena is “not in the correct attitude” on the surface. Ouch. A lot of ppl saying it is too skinny and tall but I’m betting on the guy who thinks they aren’t cancelling enough horizontal prior to touchdown. Either touchdown is occurring before they think it should or there isn’t enough gimballed cosine thrust leftover for the horizontal cancellation after the required vertical deceleration takes its bite out of the budget or similar. I have no particular reason for leaning this way other than it doesn’t seem like the lander is all that tall and skinny given the stance of the legs I'm not actually sure what happened during the descent. I found the graphics provided during the landing stream confusing, which is a bad sign. I think it's mainly software related combined with the top-heavy design. Quote Link to comment Share on other sites More sharing options...
darthgently Posted March 6 Share Posted March 6 Clearly they need KSP overpowered reaction wheels to right the lander. Duh. We’ve all been there; sort of. In our special KSP way, ha ha 11 minutes ago, Minmus Taster said: I'm not actually sure what happened during the descent. I found the graphics provided during the landing stream confusing, which is a bad sign. I think it's mainly software related combined with the top-heavy design. In the ongoing live press conference, also on YouTube as well as X, they are saying the attitude ranging laser was not behaving well during descent so I’m leaning a bit further to the ground coming up quicker than perceived by the software perhaps https://www.youtube.com/live/q-mMJxIttBc?si=u5as2ofvNxPk7XOy Quote Link to comment Share on other sites More sharing options...
tater Posted March 6 Author Share Posted March 6 Was just texting with my buddy at Johnson about this and my last text to him was: "At a certain point from intuitive machines, you wanna see the presser be them saying “Yeah we’re sorry, we kind of suck at this” " Quote Link to comment Share on other sites More sharing options...
darthgently Posted March 6 Share Posted March 6 (edited) They just mentioned that this lander has much lower CoM than the previous with all the heavy stuff down low. So they learned from the Sideways One lander. I do not envy the IM ppl in the hot seats in this presser I gotta say that it seems crazy to me they can’t verify the attitude. A $0.50 cell phone accelerometer chip would probably do it in a pinch. Shell out 20x that for “lunar grade” and it would still be a great deal. I’m guessing on the cost but can’t be off horribly Edited March 6 by darthgently Quote Link to comment Share on other sites More sharing options...
grawl Posted March 6 Share Posted March 6 32 minutes ago, darthgently said: A $0.50 cell phone accelerometer chip would probably do it in a pinch. Shell out 20x that for “lunar grade” and it would still be a great deal. I’m guessing on the cost but can’t be off horribly Maybe they ARE using a $0.50 cell phone accelerometer, and then it got the moon's gravity field wrong. Quote Link to comment Share on other sites More sharing options...
darthgently Posted March 6 Share Posted March 6 (edited) 58 minutes ago, grawl said: Maybe they ARE using a $0.50 cell phone accelerometer, and then it got the moon's gravity field wrong. lol. Could be. Though accelerometers are very simple and while the moon would have a lower magnitude it would still just point down. Edited March 6 by darthgently Quote Link to comment Share on other sites More sharing options...
insert_name Posted March 7 Share Posted March 7 2 hours ago, darthgently said: They just mentioned that this lander has much lower CoM than the previous with all the heavy stuff down low. So they learned from the Sideways One lander. I do not envy the IM ppl in the hot seats in this presser I gotta say that it seems crazy to me they can’t verify the attitude. A $0.50 cell phone accelerometer chip would probably do it in a pinch. Shell out 20x that for “lunar grade” and it would still be a great deal. I’m guessing on the cost but can’t be off horribly Most cell phones tend to operate less than 400000km away from anything capable of receiving data, and do not require directional antennas to communicate most of their data Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 7 Share Posted March 7 Reminds me of blowing sand around on the beach as a kid. Quote Link to comment Share on other sites More sharing options...
AckSed Posted March 7 Share Posted March 7 The little rock kicked up and spinning floatily back down is an unexpectedly nice touch. Quote Link to comment Share on other sites More sharing options...
tater Posted March 7 Author Share Posted March 7 Forum stopped embedding X posts? Quote Link to comment Share on other sites More sharing options...
darthgently Posted March 7 Share Posted March 7 (edited) 19 minutes ago, tater said: Forum stopped embedding X posts? If that image is corrected for actual vertical it looks like the software selected a bit of a slope to land on. Who knows? We need more info! Edited March 7 by darthgently Quote Link to comment Share on other sites More sharing options...
tater Posted March 7 Author Share Posted March 7 6 minutes ago, darthgently said: If that image is corrected for actual vertical it looks like the software selected a bit of a slope to land on. Who knows? We need more info! Also sorta fisheyed. Quote Link to comment Share on other sites More sharing options...
AckSed Posted March 7 Share Posted March 7 1 hour ago, tater said: That's not gone well. Maybe consider 'crasher' stages next time? (Sorry, not sorry) Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 7 Share Posted March 7 (edited) Athena is dead, it's landed on it's side in a crater and cannot recharge. They attempted to accelerate some of the science objectives but seemingly got no useful data. It's a bummer but better than a crash I suppose, good luck to Intuitive Machines next time. Edited March 7 by Minmus Taster Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 7 Share Posted March 7 Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 12 Share Posted March 12 Quote Link to comment Share on other sites More sharing options...
RCgothic Posted March 12 Share Posted March 12 It hadn't occurred to me that too much power could be an issue! Quote Link to comment Share on other sites More sharing options...
darthgently Posted March 13 Share Posted March 13 13 hours ago, RCgothic said: It hadn't occurred to me that too much power could be an issue! It happens in a lot of engineering. Unless it would mess with their experiments maybe heating the regolith below the lander would be a good use of excess power as lunar night comes on as it might alleviate the battery heating load into the night a bit. Many sailboat and home solar energy systems will shunt excess juice into heating water in the hot water heater, or into a preheat tank feeding the water heater, as a more mundane example Quote Link to comment Share on other sites More sharing options...
tater Posted March 13 Author Share Posted March 13 Quote Link to comment Share on other sites More sharing options...
AckSed Posted March 13 Share Posted March 13 (edited) Quick video of Blue Ghost deploying the electrodes and antenna of the Lunar Magnetotelluric Sounder: tl;dw POING! Looking into it, magnetotellurics is a well-developed field that can find all sorts of resources (water, minerals, magma upwellings for geothermal) by measuring differences in the conductivity of the ground. While Luna doesn't have the magnetic field of Earth, it is still affected by the Sun's magnetic field and has a conductive regolith. Edited March 13 by AckSed Link Quote Link to comment Share on other sites More sharing options...
cubinator Posted March 14 Share Posted March 14 Sooooo is Blue Ghost taking pictures of the Earth right now? Quote Link to comment Share on other sites More sharing options...
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