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05:56
<
raptop >
Althego: OH: ホロ鳥は食べ物じゃない
05:56
<
raptop >
(for full context, picture an angry duck saying that)
06:00
<
Althego >
i dont know what this is
06:01
<
Althego >
meanwhile war criminal denies allegations of appearing in isekai anime
06:01
<
raptop >
Conversation between subaru and reine, with subaru arguing that holobirbs aren't food
06:02
<
Althego >
ah is that when reine teaches her indonesian
06:24
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07:30
<
Deddly >
Isn't inginuity going to be tested like right now?
07:31
<
Althego >
suposedly
07:31
<
Althego >
conference in almost 3 hours
07:31
<
Althego >
i guess they need to get back the data and look at it
07:31
<
Althego >
could be it already landed
07:32
<
Althego >
30 sec flight
07:32
<
Deddly >
Looks like it already picked up a lot of dust on the solar panels. Hopefully will be able to shake that off
07:33
<
Althego >
yes, somehow it was like that after the first day
07:33
<
Althego >
i thought only moon dust is static
07:33
<
Deddly >
Maybe it wasn't fully protected from the environment on landing
07:34
<
Althego >
that cover looked solid
07:34
<
Deddly >
I never saw the cover
07:35
<
Deddly >
I guess it'll take some days to download video of the flight, too.
07:36
<
Deddly >
Nice images of the deployment :)
07:36
<
Althego >
but before this two things were shed from the rover
07:36
<
Althego >
one flat plate for something
07:36
<
Althego >
and one black box that covered the helicopter
07:36
<
Deddly >
I'm sure you're right.
07:38
<
Deddly >
If it falls over on landing, I wonder if Perseverance can put it back on its feet
07:39
<
Althego >
it has an arm so maybe
07:39
<
Deddly >
That's a pretty good protective box.
07:39
<
Althego >
but there was something about if it flips then it is a loss because there is no recovery mechanism
07:39
<
Deddly >
And looking at the beginning of that video, it doesn't look like the box is full of dust
07:45
<
Althego >
the articles are not saying the same. maybe the flight really is in a few hour
07:49
<
Deddly >
NASA's own website says the flight was planned for 3:30 EDT, which is 8:30 UTC, but the press release won't take place for a couple of hours
07:49
<
Althego >
but they also say live reaction
07:50
<
Althego >
maybe they need to wait for a satellite pass
07:50
<
Deddly >
Perhaps reaction to images?
07:50
<
Deddly >
If they have to wait for a satellite pass, why plan the flight for that time, I wonder?
07:50
<
Althego >
environmental conditions
07:50
<
Althego >
they want high pressure and low wind
07:52
<
Althego >
anyway we cant explain this discrepancy
07:55
<
Deddly >
Maybe they just don't want to get up so early ;)
08:21
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09:45
<
Althego >
30 minutes until stream
09:48
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10:25
<
Althego >
85% chance of flight with the workaround
10:30
<
prefixcactus >
when will they start receiving the actual data?
10:30
<
Althego >
they mentioned it earlier, was 3x
10:30
<
Althego >
but i dont remember :)
10:30
<
Althego >
so at most 30 minutes
10:31
<
prefixcactus >
I suppose the flight (or non-flight) is already taking place on Mars
10:31
<
Althego >
yes as the articles said, it happened hours ago
10:32
<
prefixcactus >
oh, hours even
10:32
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10:32
<
Althego >
i cant help it, i always find the voice of this guy funny
10:32
<
prefixcactus >
so there are additional delays on top of the transmission itself?
10:32
<
prefixcactus >
true
10:32
<
Althego >
like some cartoon character
10:33
<
Althego >
so probably what happened they were waiting for an orbiter pass
10:34
<
prefixcactus >
oh, that makes sense
10:34
<
Althego >
usually there is one link per sol
10:34
<
Mat2ch >
First delivery by SpaceX to Mars: Satellite network. ;)
10:34
<
prefixcactus >
it's weird to see all the people wearing facemasks on top of respirators
10:34
<
Althego >
we need that
10:34
<
Mat2ch >
and they will make them pay!
10:35
<
Althego >
the martians?
10:36
<
Althego >
3 m hover, with martian gravity, even if it fails on top, it might survive
10:38
<
Althego >
hehe meanwhile canberra is sending to voyager 2
10:38
<
Althego >
looks like madrid is going to take mro data
10:38
<
prefixcactus >
while the fall shouldn't damage the innards, it could end up upside down and/or damage the blades
10:39
<
Althego >
should have sent a kerbal
10:39
<
Althego >
to repair it
10:40
<
prefixcactus >
hm, 2500 RPM is on par with large earth-based quadcopters
10:40
<
Althego >
looked like an ubuntu on the laptop
10:40
<
prefixcactus >
yep, definitely
10:40
<
prefixcactus >
spacebuntu
10:40
<
Althego >
2500 rpm is nothing
10:41
<
prefixcactus >
it is demanding for such rotor diameters
10:41
<
prefixcactus >
the motors should be totally ok with that, but the blades themselves must be extremely meticulously balanced
10:42
<
Althego >
i hope it also imaged the rover too, just as the rover made picture while the heli was hovering
10:42
<
Mat2ch >
that shouldn't be the problem
10:43
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10:46
<
Althego >
processing
10:47
<
Althego >
they are loking at some web thingie?
10:48
<
Althego >
unpacked image? does that mean a success? would it take a shot if it didnt fly?
10:50
<
Althego >
ah yes i forgot about the dust
10:50
<
Althego >
i wonder how long such a helicopter could remain operational
10:51
<
prefixcactus >
the speed of those confirmations suggests they're decoding it on a PDP-10 :>
10:51
<
prefixcactus >
yay terminal time
10:52
<
Althego >
hehe it landed on different altitude
10:52
* prefixcactus
claps vigorously
10:52
<
Althego >
which is ok with a rough terrain
10:53
<
Althego >
although it shouldnt have moved
10:53
<
Althego >
so hhow doe sit measur altitude? inertial? maybe the down looking camera too
10:54
<
prefixcactus >
I thought they have a radar/ultrasonic-type altimeter on it, which shows terrain altitude
10:54
<
Althego >
ah it has something for that
10:55
<
Althego >
it made a movie
10:56
<
prefixcactus >
Do they have any GNSS-type sats around Mars?
10:57
<
Althego >
they have observation or observation and relay combos
10:58
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10:58
<
Althego >
but if you want to have position, from orbital images you can get coordinates
10:58
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10:58
<
prefixcactus >
Althego: where'd you get the graph? they didn't show it in my stream
10:58
<
Althego >
just for a short time
11:00
<
Althego >
anyway i would have been interested in, what the cause of the altititude difference was
11:01
<
Althego >
sensor hysteresis, ins drift, landing position difference, or some other error
11:01
<
Althego >
even if i say the legs distorted a little, they would create higher altitude
11:02
<
prefixcactus >
how much of a difference is there?
11:02
<
Mat2ch >
where do you see the different altitude?
11:02
<
Althego >
i though the 0 is the starting point
11:03
<
Mat2ch >
it's not :)
11:03
<
Althego >
so then it was 0 when it was uninitialized
11:03
<
Mat2ch >
just not logging the data, I guess, because it knew it was on the ground
11:03
<
prefixcactus >
looks like it
11:04
<
Deddly >
I would imagine flat line = no data
11:04
<
Althego >
null island strikes on mars too
11:04
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11:04
<
Deddly >
Also, that is so cool. Can't wait to see the full video
11:04
<
prefixcactus >
it appears to have landed slightly lower than from where it lifted off
11:04
<
Althego >
and that is ok
11:04
<
Althego >
because there was some force on the legs
11:04
<
Althego >
maybe they bent a little
11:04
<
prefixcactus >
by several cm maybe
11:05
<
Althego >
maybe there is a rock at the measurement point
11:05
<
prefixcactus >
probably the legs just sunk into the dust
11:06
<
Deddly >
Maybe a sandworm ate it
11:06
<
prefixcactus >
and/or there was some buildup in the center due to airflow
11:11
<
Mat2ch >
or the sensor isn't as exact as you
11:13
<
Mat2ch >
*as you think
11:13
<
Mat2ch >
I need a rice cooker.
11:14
<
Mat2ch >
Every time I manage to boil it over and have to scrub the stove afterwards :|
11:14
<
taniwha >
too much water, perhaps
11:14
<
taniwha >
(should be 2x rice by volume)
11:15
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11:16
<
Deddly >
It'll still boil over if you don't turn down the temperature when it starts boiling :)
11:16
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11:16
<
taniwha >
a bit of oil, heat, 1u rice, stir for a bit in hot oil, 2u water, lid, wait for water to boil off. done
11:16
<
taniwha >
(well, mostly boil off, don't want to burn your rice)
11:18
<
Mat2ch >
taniwha: no, I just don't have the patience to wait until it boils and then turn off the heat. Or sometimes I just forget...
11:19
<
taniwha >
forgetting's always a problem :/
11:19
<
Mat2ch >
no patience and then forgetting. :D
11:21
<
Mat2ch >
but on the other hand: Dinner is ready! ;)
11:32
<
taniwha >
always a good thing
11:53
<
Mat2ch >
It was, it was
11:54
<
Althego >
put a camera there, train an neural network to notice boiling water, use that to notify you
12:01
<
Izaya >
rice cooker is probably cheaper and easier
12:01
<
Izaya >
but if you're going to do that have a little view of the camera as a dockapp on your windowmaker
12:08
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12:09
<
prefixcactus >
rice cookers are nice
12:10
<
prefixcactus >
especially if they are of the multiprogram variety so that you could cook other stuff in them too
12:10
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12:11
<
prefixcactus >
we end up only cooking rice in it anyway tho
12:12
<
Mat2ch >
well, that's why I would only go for the simplest ones with the magnet at the bottom that switches them off :D
12:13
<
prefixcactus >
kerbal recipe: put rice in pan, stir in hot machine oil, put water in fire extinguisher, put pan on top of mainsail, ignite
12:13
<
Mat2ch >
uhh, puffed rice!
12:13
<
prefixcactus >
wait till the dust settles, collect experimental data
12:14
<
prefixcactus >
inspect samples by chewing
12:15
<
umaxtu >
hopefully the cat didn't take a dump in the rice
12:15
<
prefixcactus >
the cat will not go to space today
12:15
<
JVFoxy >
hopefully cellphone didn't get forgotten in rice
12:16
<
prefixcactus >
!mission
12:16
<
LunchBot >
prefixcactus: You stir the tanks. Physics fails you, and you fall through the floor.
12:17
<
JVFoxy >
.. mental note: make sure pot has lid on it at all times while having a cat c_c;
12:18
<
Deddly >
!nextlunch
12:18
<
LunchBot >
Deddly: Chicken salad.
12:18
<
JVFoxy >
mind you, my room mates 5 cats, non of them cares to even go up on the stove
12:18
<
Mat2ch >
.oO( I hate cats sometimes )
12:19
<
JVFoxy >
sister had a cat, parents put a plastic cat turd on the stairs and tried to give her a hard time about the cat making a mess... I hate my parents sometimes.
12:20
<
Althego >
entitled parents
12:21
<
JVFoxy >
sister didn't fall for it though...
12:24
<
JVFoxy >
I miss my little fuzzies.. sadly, getting another is proven hard due to pandemic. :(
12:26
<
umaxtu >
mine are old now. already had to separately rush them to the vet once each because we thought they were dying.
12:26
<
Deddly >
Althego, very amusing
12:31
<
JVFoxy >
mine passed a few years ago. Was also same time a number of people I knew of who were having pets pass on as well
13:31
<
Deddly >
I love animals, but that part destroys me
13:33
<
Deddly >
I predict that 2025 will be the great petpocalypse
13:33
<
Deddly >
(masses of people got themselves pets during the pandemic)
13:34
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13:38
<
prefixcactus >
there will be several species-specific waves
13:38
<
prefixcactus >
!mission
13:38
<
LunchBot >
prefixcactus: You build a micro surfboard so you can surf the microwaves. Wernher von Kerman orders Bob to buy him a dozen brattwursts on the way back from the supermarket.
13:42
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14:09
<
Althego >
actually where was the horizontal picture from the drone? maybe they got it now
14:22
<
Althego >
the falcon 9 is transported and handled horizontally. "why dont they just" build a sort of car wash for it, rocket goes through and a ring of sprinklers sprays water. would get rid of that ugly soot
14:23
<
Deddly >
I think they are using the soot as a selling point right now. Soot means it is reusable, and it's a reminder to everyone who sees it
14:24
<
Althego >
spacex is like tesla. they dont need ads
14:25
<
Deddly >
Ingenuity's camera must have a crazy fast shutter to capture the rotors so sharply in that image of its own shadow
14:25
<
Althego >
i was surprised too
14:26
<
Deddly >
Black and white, low res also helps
14:26
<
Althego >
but it is not crazy high rpm, in the range a normal induction motor would do
14:26
<
Deddly >
What was it, 2500 RPM?
14:27
<
Deddly >
Interesting. BBC says 2500. The rotors are 1.2 metres long
14:28
<
umaxtu >
BBC uses British minutes
14:28
<
Deddly >
I guess that 1.2 metres means from tip to tip
14:30
<
Deddly >
That means the tips of the rotors travel 3.77 metres per second
14:30
<
Althego >
wiki says 0.7 mach
14:30
<
Althego >
but i dont know the speed of sound in carbon dioxide
14:30
<
Deddly >
3.77 metres for a single rotation, I meant to say
14:31
<
Deddly >
It travels those 3.77 metres 2400 times per second
14:32
<
Deddly >
Maths was never my strong point, but doesn't that add up to over 9000 m/s?
14:33
<
Althego >
rpm not rps
14:36
<
Althego >
that seems kind of low
14:36
<
Althego >
at least if i compare to standard atmosphere air
14:36
<
Althego >
but it is way colder and carbon dioxide
14:37
<
Althego >
i dont even know how speed of sound changes with temperature
14:37
<
Deddly >
I think temperature only has an impact because it changes the air density
14:38
<
Althego >
seems to be a function of square root of temperature. so yes it gets lower
14:38
<
Deddly >
Google tells me that the speed of sound on Mars is 240 m/s
14:38
<
flayer >
but what is the speed of your pants on venus?
14:38
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14:39
<
Althego >
what does that supposed to mean
14:39
<
Deddly >
flayer, they dissolve at 5g/s
14:39
<
Althego >
there isnt, they evaporate
14:39
<
Althego >
or yes rather dissolve in supercritical carbon dioxide
14:59
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15:27
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15:32
<
Mat2ch >
Althego: the soot is probably burnt into the paint
15:32
<
Mat2ch >
so no easy cleaning
15:33
<
Althego >
hmm, can be, after all it came from a fire
15:33
<
Mat2ch >
I'm not sure if it is the fire itself or the heat shield below that partially gets ablated
15:34
<
Mat2ch >
but they are burning Kerosin there, which has Carbon in it, so it could be unburnt Carbon that gets integrated into the paint
15:35
<
Mat2ch >
(and if I read the translation of soot correctly it is really meaning "Unburnt Carbon"
15:36
<
Deddly >
If you watch video from on-board the booster during re-entry and landing, you can see that soot builds up on the camera lens during burns
15:37
<
Deddly >
And since they are running a ruel-rich ratio, there is a lot of unburned fuel
15:37
<
Mat2ch >
that's true. And somehow it gets removed, too. Some coating maybe?
15:37
<
Deddly >
Perhaps it's soot mixed with water vapour?
15:38
<
Deddly >
They could also have a transparent lens protector that rotates
15:40
<
Mat2ch >
like F1 cars ;)
17:06
<
FLHerne >
Mat2ch: At least some of the soot comes off easily, the astronauts doodled white marks on it with their fingers
17:14
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18:00
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18:02
<
Althego >
stream started
18:12
<
Althego >
also there is an unrelated scott video
18:28
<
Althego >
hmm, no color image
18:28
<
Althego >
lol they got an aircraft designation
18:28
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18:31
<
Deddly >
"like flying 3 times higher than the Himalayas" <-- Does that mean they could take off from Everest and fly up to 24,000 m?
18:32
<
Althego >
doubt it has enough battery for that. also higher gravity
18:32
<
Deddly >
Well, I meant the altitude rather than actually being able to do that
18:33
<
Deddly >
But year, gravity
18:33
<
Althego >
certainly himalaya altitude and temperature is nothing to this
18:33
<
Althego >
it may be overpowered
18:33
<
Althego >
can it be damaged ffrom that?
18:33
<
Deddly >
From what? I'm behind on the stream right now
18:34
<
Althego >
if we tried to fly it from mount everest
18:34
<
Deddly >
Can it be damaged from being overpowered?
18:34
<
Deddly >
I would imagine not
18:34
<
Althego >
it is designed for low pressure
18:36
<
Deddly >
I suppose if they spooled it up to max RPM and lift it could theoretically rip the blades off
18:38
<
Althego >
next flight on thursday
18:38
<
Deddly >
He says 2600 RPM
18:43
<
Deddly >
Nice to see the whole video. Will be cool when they get the rest of the frames and the zoomed-in material
18:43
<
Althego >
yes, that is already a lot of frames
18:43
<
Althego >
way more i hoped for
18:51
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19:15
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19:16
<
Deddly >
It seems to me that they god a lot more material in a shorter time than they did from the landing
19:16
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19:16
<
Deddly >
Perhaps their uplink is faster now that the rover is fully deployed?
19:17
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19:21
<
Althego >
what, 2026 lander?
19:27
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19:39
<
umaxtu >
Althego, sample return?
19:39
<
Althego >
yes they mentioned it
19:40
<
Althego >
but as i said some weeks (?) ago, it is not even named yet
19:40
<
Althego >
the only thing wiki knows of mars 2026 is a polar lander thing
19:40
<
Althego >
but that is most certainly something else
19:41
<
Althego >
and it uses the same base as phoenix and insight
19:41
<
flayer >
maybe the spacex thing can bring the lander into orbit around mars
19:41
<
Althego >
there is a 2024 2026 spacex thing for mars, but i almost laughed about it being manned
19:44
<
Althego >
oh wait they are not in order
19:44
<
Althego >
there are tweo other mars things
19:44
<
Althego >
one indeed is the sample return
19:45
<
Althego >
but the sample return is still sketchy
19:55
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