Mars Rover landing 3:55pm Eastern

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Re: Mars Rover landing 3:55pm Eastern

#201

Post by Animal »

That's my point. If the guy hadn't used a few fancy calculus looking variables and made it seem mind blowingly sophisticated, he would have been a laughing stock instead of a wiki page.
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Re: Mars Rover landing 3:55pm Eastern

#202

Post by Antknot »

Animal wrote: Mon Feb 22, 2021 2:54 am Flumper's Equation: For calculating the number of trash cans with bent nails on a given day = N

1. First we need to know the rate that trash cans are produced.
2. We need to know the mean number of trash cans in a building.
3. We need to know the rate of buildings that include a person that might use a nail in a day.
4. If a person uses a nail, we need to know the number of nails in a day they might use.
5. Of nails used, we need to know the mean number of those nails that are bent.
6. We need the ratio of nails that are bent in relation to nails that end up in a trash can.
7. We need to know the rate in which trash cans are discarded and no longer used.
You did not account for:
A. the rate bent nails are restraightened
B. The percentage pf bent nails that are recycled vs thrown away
c> the bent nails that end up in tires

Does this apply to orher forms of metal fasteners? Like staples, screws, bolts, paper clips spikes?
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Re: Mars Rover landing 3:55pm Eastern

#203

Post by Animal »

Antknot wrote: Mon Feb 22, 2021 9:44 am
Animal wrote: Mon Feb 22, 2021 2:54 am Flumper's Equation: For calculating the number of trash cans with bent nails on a given day = N

1. First we need to know the rate that trash cans are produced.
2. We need to know the mean number of trash cans in a building.
3. We need to know the rate of buildings that include a person that might use a nail in a day.
4. If a person uses a nail, we need to know the number of nails in a day they might use.
5. Of nails used, we need to know the mean number of those nails that are bent.
6. We need the ratio of nails that are bent in relation to nails that end up in a trash can.
7. We need to know the rate in which trash cans are discarded and no longer used.
You did not account for:
A. the rate bent nails are restraightened
B. The percentage pf bent nails that are recycled vs thrown away
c> the bent nails that end up in tires

Does this apply to orher forms of metal fasteners? Like staples, screws, bolts, paper clips spikes?
It was my rough draft 2 minute spitball attempt to create an Equation that was absolute brilliance off the charts. It might take a few more minutes to refine it to the point that Drake did his.
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Re: Mars Rover landing 3:55pm Eastern

#204

Post by rule34 »

disco.moon wrote: Mon Feb 22, 2021 12:26 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 3:24 am
disco.moon wrote: Mon Feb 22, 2021 3:11 am I'm drinking. Didi so that right?
Yes, Ma'am. You are so welcome. It's been a sausage fest around here. With Animal, it even involved goats.
I'm pretty certain most of you would prefer it a man only space.
He's doing his best to make it one.
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Re: Mars Rover landing 3:55pm Eastern

#205

Post by Reservoir Dog »

disco.moon wrote: Mon Feb 22, 2021 12:26 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 3:24 am
disco.moon wrote: Mon Feb 22, 2021 3:11 am I'm drinking. Didi so that right?
Yes, Ma'am. You are so welcome. It's been a sausage fest around here. With Animal, it even involved goats.
I'm pretty certain most of you would prefer it a man only space.
I like you being here.




















Wanna fuck?
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Re: Mars Rover landing 3:55pm Eastern

#206

Post by woohooguy »

Tune in to the Nasa YouTube link on page 1 at 2pm eastern time for the rover landing video.
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Re: Mars Rover landing 3:55pm Eastern

#207

Post by pork »

anyone catch the joe rogan / elon musk interview last week on spotify? it was really interesting
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Re: Mars Rover landing 3:55pm Eastern

#208

Post by woohooguy »

Watching the broadcast, that landing system is amazing
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Re: Mars Rover landing 3:55pm Eastern

#209

Post by woohooguy »

Well shitballs, the microphone didn't capture the landing sequence
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Re: Mars Rover landing 3:55pm Eastern

#210

Post by Animal »

woohooguy wrote: Mon Feb 22, 2021 7:31 pm Watching the broadcast, that landing system is amazing
Wow! That is some amazing video. Holy shit!

so, tell me, on the day it landed. Obviusly they didn't have this video to look at. How did the lady know the exact moment that the rover touched down? What kind of delay was in whatever communication she had that told her that?
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Re: Mars Rover landing 3:55pm Eastern

#211

Post by Wut »

disco.moon wrote: Mon Feb 22, 2021 12:26 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 3:24 am
disco.moon wrote: Mon Feb 22, 2021 3:11 am I'm drinking. Didi so that right?
Yes, Ma'am. You are so welcome. It's been a sausage fest around here. With Animal, it even involved goats.
I'm pretty certain most of you would prefer it a man only space.
I’d prefer this forum to be me and all other members being female.
wut?
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Re: Mars Rover landing 3:55pm Eastern

#212

Post by CentralTexasCrude »

That was an awesome video. Any one else want to see the heat shield actually hit the surface at full speed from miles up? :D
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Re: Mars Rover landing 3:55pm Eastern

#213

Post by woohooguy »

Animal wrote: Mon Feb 22, 2021 7:45 pm
woohooguy wrote: Mon Feb 22, 2021 7:31 pm Watching the broadcast, that landing system is amazing
Wow! That is some amazing video. Holy shit!

so, tell me, on the day it landed. Obviusly they didn't have this video to look at. How did the lady know the exact moment that the rover touched down? What kind of delay was in whatever communication she had that told her that?
11 minutes was the delay, with the entire landing sequence 8 minutes long.

They were clapping and the entire thing could’ve been a pile of burning rubble on Mars, and they wouldn’t know for 3 minutes after.

:lol:
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Re: Mars Rover landing 3:55pm Eastern

#214

Post by Animal »

woohooguy wrote: Mon Feb 22, 2021 8:17 pm
Animal wrote: Mon Feb 22, 2021 7:45 pm
woohooguy wrote: Mon Feb 22, 2021 7:31 pm Watching the broadcast, that landing system is amazing
Wow! That is some amazing video. Holy shit!

so, tell me, on the day it landed. Obviusly they didn't have this video to look at. How did the lady know the exact moment that the rover touched down? What kind of delay was in whatever communication she had that told her that?
11 minutes was the delay, with the entire landing sequence 8 minutes long.

They were clapping and the entire thing could’ve been a pile of burning rubble on Mars, and they wouldn’t know for 3 minutes after.

:lol:
so even when they were in the control room on the day it landed and were getting radio signals that we couldn't hear or see. that lady was narrating into the microphone various things as they were happening. All of that was 11 minute delayed? So when she said "It has touched down" that actually had happened 11 minutes prior?

Because I thought the 11 minute delay was in getting pictures back.
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Re: Mars Rover landing 3:55pm Eastern

#215

Post by woohooguy »

Animal wrote: Mon Feb 22, 2021 8:27 pm
woohooguy wrote: Mon Feb 22, 2021 8:17 pm
Animal wrote: Mon Feb 22, 2021 7:45 pm
woohooguy wrote: Mon Feb 22, 2021 7:31 pm Watching the broadcast, that landing system is amazing
Wow! That is some amazing video. Holy shit!

so, tell me, on the day it landed. Obviusly they didn't have this video to look at. How did the lady know the exact moment that the rover touched down? What kind of delay was in whatever communication she had that told her that?
11 minutes was the delay, with the entire landing sequence 8 minutes long.

They were clapping and the entire thing could’ve been a pile of burning rubble on Mars, and they wouldn’t know for 3 minutes after.

:lol:
so even when they were in the control room on the day it landed and were getting radio signals that we couldn't hear or see. that lady was narrating into the microphone various things as they were happening. All of that was 11 minute delayed? So when she said "It has touched down" that actually had happened 11 minutes prior?

Because I thought the 11 minute delay was in getting pictures back.
The data being returned was 11 minutes after the rover performed each event.

When watching this video, they synced the audio (11 minutes after it actually happened) with the video in real time.

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Re: Mars Rover landing 3:55pm Eastern

#216

Post by Animal »

woohooguy wrote: Mon Feb 22, 2021 8:31 pm
Animal wrote: Mon Feb 22, 2021 8:27 pm
woohooguy wrote: Mon Feb 22, 2021 8:17 pm
Animal wrote: Mon Feb 22, 2021 7:45 pm
woohooguy wrote: Mon Feb 22, 2021 7:31 pm Watching the broadcast, that landing system is amazing
Wow! That is some amazing video. Holy shit!

so, tell me, on the day it landed. Obviusly they didn't have this video to look at. How did the lady know the exact moment that the rover touched down? What kind of delay was in whatever communication she had that told her that?
11 minutes was the delay, with the entire landing sequence 8 minutes long.

They were clapping and the entire thing could’ve been a pile of burning rubble on Mars, and they wouldn’t know for 3 minutes after.

:lol:
so even when they were in the control room on the day it landed and were getting radio signals that we couldn't hear or see. that lady was narrating into the microphone various things as they were happening. All of that was 11 minute delayed? So when she said "It has touched down" that actually had happened 11 minutes prior?

Because I thought the 11 minute delay was in getting pictures back.
The data being returned was 11 minutes after the rover performed each event.

When watching this video, they synced the audio (11 minutes after it actually happened) with the video in real time.

yeah, the one i just watched the lady's voice was synched with exactly what was happening in the video. man, that is so freaking cool. and that camera image was just perfect. it was in focus from thousands of kilometers right down to where the sand started kicking up too much to see the ground.
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Re: Mars Rover landing 3:55pm Eastern

#217

Post by woohooguy »

To give everyone a better idea how big that "descent stage" rocket pack really is

Image

Each one of those hydrazine engines is about the size of a person with the nozzels.
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Re: Mars Rover landing 3:55pm Eastern

#218

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woohooguy wrote: Mon Feb 22, 2021 8:41 pm To give everyone a better idea how big that "descent stage" rocket pack really is

Image

Each one of those hydrazine engines is about the size of a person with the nozzels.
Is that the thing they called the sky crane?
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Re: Mars Rover landing 3:55pm Eastern

#219

Post by CentralTexasCrude »

Animal wrote: Mon Feb 22, 2021 8:47 pm
woohooguy wrote: Mon Feb 22, 2021 8:41 pm To give everyone a better idea how big that "descent stage" rocket pack really is

Image

Each one of those hydrazine engines is about the size of a person with the nozzels.
Is that the thing they called the sky crane?
Yeah, it's the thing that actually lowered the Rover, then flew off. Edit: If you go back and watch the landing video again, right when the Rover lands, for about 1 second they pan up and show the sky crane flying off.
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Re: Mars Rover landing 3:55pm Eastern

#220

Post by Reservoir Dog »

Animal wrote: Mon Feb 22, 2021 8:35 pm

That is soooooooo fuking cool!
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Re: Mars Rover landing 3:55pm Eastern

#221

Post by woohooguy »

https://mars.nasa.gov/mars2020/multimedia/raw-images/

Link to the Mars 2020 NASA site with RAW images. I edited the first post of this thread and put it there as well.

There will be a shit ton of new images popping up over the next 2 weeks as they finish up testing and take a short drive.

Page 9 has some nice close ups of the rocket pack
Last edited by woohooguy on Mon Feb 22, 2021 9:19 pm, edited 1 time in total.
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Re: Mars Rover landing 3:55pm Eastern

#222

Post by Animal »

CentralTexasCrude wrote: Mon Feb 22, 2021 8:51 pm
Animal wrote: Mon Feb 22, 2021 8:47 pm
woohooguy wrote: Mon Feb 22, 2021 8:41 pm To give everyone a better idea how big that "descent stage" rocket pack really is

Image

Each one of those hydrazine engines is about the size of a person with the nozzels.
Is that the thing they called the sky crane?
Yeah, it's the thing that actually lowered the Rover, then flew off. Edit: If you go back and watch the landing video again, right when the Rover lands, for about 1 second they pan up and show the sky crane flying off.
and so what happened to it? Did it just go crash somewhere or did it go land somewhere for something in the future?
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Re: Mars Rover landing 3:55pm Eastern

#223

Post by woohooguy »

Animal wrote: Mon Feb 22, 2021 9:19 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 8:51 pm
Animal wrote: Mon Feb 22, 2021 8:47 pm
woohooguy wrote: Mon Feb 22, 2021 8:41 pm To give everyone a better idea how big that "descent stage" rocket pack really is

Image

Each one of those hydrazine engines is about the size of a person with the nozzels.
Is that the thing they called the sky crane?
Yeah, it's the thing that actually lowered the Rover, then flew off. Edit: If you go back and watch the landing video again, right when the Rover lands, for about 1 second they pan up and show the sky crane flying off.
and so what happened to it? Did it just go crash somewhere or did it go land somewhere for something in the future?
It peeled off to fly away and it crashed some ways away to not interfere or possibly damage the Rover.
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Re: Mars Rover landing 3:55pm Eastern

#224

Post by Animal »

nasa is going to have to seriously look into building these crafts out of biodegradable materials. What a mess they have made.
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Re: Mars Rover landing 3:55pm Eastern

#225

Post by woohooguy »

I want to add that while NASA is as careful as possible to avoid microbe contamination, there is no practical way to sanitize the Rover and all of its components of possible microbe hitchhikers. Every rover we have landed on Mars has the possibility of contaminating it, so NASA does what it can to keep the clean rooms as pure as possible and tests surfaces of anything going to Mars on a very regular basis, then those samples are examined/cultivated to see if there is biological contamination.

The direction the descent stage rocket backpack turned off to was decided by the final navigation solution, predetermined and instructed by the rover before separation. JPL has done some amazing things to consolidate all the different computers and what not into the rover, it reduces the chance of something going wrong when you can make the rover systems more robust to begin with and handle more. Not to mention the rover is nuclear powered with batteries so thats the primary power source after cruise stage separation.

So once the final landing solution was plotted, the path the backpack took was set as well, rotated in a way to not blast the rover with exhaust gasses and took it in a direction far enough away it will not interfere with the rover. Wherever it landed, NASA will go the opposite direction to ensure anything it may come across has not possibly been contaminated with the exhaust, remnant chemicals, possible biologicals, etc from the jet pack.

Going over the video again, the callouts are interesting

1:08 Radar contact - the radar on the descent stage started reading the ground and began plotting a place to land while under parachute. The radar ran all the way to the ground

1:48 Valid landing solution - the system identified the best place to land using the current trajectory and speed under parachute

1:56 Timing landing engines - the system had to ensure that once the descent stage broke free, it had enough fuel to get the lander safely to the ground and then turn away. Still under parachute

2:05 Back shield separation - the system calculated the jet pack could cut free from the parachute and have enough fuel to meet its goal. the pack ejected from the module tied to the parachute

2:27 Terrain altered Nav - the system is now under rocket power and radar system is determining the final landing location now that it has a closer picture of the landscape

2:50 Sky crane to touchdown

Some pretty fucking cool shit, all happening autonomously as help is 22 minutes away - 11 minutes to earth "oh shit" 11 minute response from earth "OH SHIT!"

:lol:
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