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NFT: Mars Perseverance Lander '7 Minutes Of Terror' Thurs 2/18/21

Trainmaster : 2/17/2021 7:29 pm
Perseverance hopes to follow in ~ sister spacecraft / rover Curiosity's 2012 successful navigation through the "7 Minutes Of Terror".

Quote:

– Atmospheric entry: The spacecraft is expected to hit the top of the Martian atmosphere traveling at about 12,100 mph (19,500 kph) at 3:48 p.m. EST (12:48 p.m. PST).

– Peak heating: Friction from the atmosphere will heat up the bottom of the spacecraft to temperatures as high as about 2,370 degrees Fahrenheit (about 1,300 degrees Celsius) at 3:49 p.m. EST (12:49 p.m. PST).

– Parachute deployment: The spacecraft will deploy its parachute at supersonic speed at around 3:52 p.m. EST (12:52 p.m. PST). The exact deployment time is based on the new Range Trigger technology, which improves the precision of the spacecraft’s ability to hit a landing target.

– Heat shield separation: The protective bottom of the entry capsule will detach about 20 seconds after the parachute deployment. This allows the rover to use a radar to determine how far it is from the ground and employ its Terrain-Relative Navigation technology to find a safe landing site.

– Back shell separation: The back half of the entry capsule that is fastened to the parachute will separate from the rover and its “jetpack” (known as the descent stage) at 3:54 p.m. EST (12:54 p.m. PST). The jetpack will use retrorockets to slow down and fly to the landing site.

– Touchdown: The spacecraft’s descent stage, using the sky crane maneuver, will lower the rover down to the surface on nylon tethers. The rover is expected to touch down on the surface of Mars at human walking speed (about 1.7 mph, or 2.7 kph) at around 3:55 p.m. EST (12:55 p.m. PST).


Also includes the Ingenuity helicopter.


7 Minutes to Mars: NASA's Perseverance Rover Attempts Most Dangerous Landing Yet - ( New Window )
People like these engineers  
section125 : 2/17/2021 7:42 pm : link
let you know that you aren't as smart as you think you are...

Still fascinating to me since the 1st Mercury missions 60 years ago...60 years ago.
There's a lot of good stuff on YouTube about the Mars landing  
Marty in Albany : 2/17/2021 8:21 pm : link
They plan on taking soil samples to look for signs of life, and send them back to Earth for analysis. The plan is for another rocket, in a year or two, to pick up the soil samples and put them in orbit around Mars to be picked up by a European rocket and returned to the USA.

The coolest thing is the helicopter. They designed it to fly in Mars' atmosphere that is 1 percent of Earth's atmosphere. It's like flying a helicopter on Earth at 100,000 feet. We don't even have jets that can fly that high.
Looking forward to  
thrunthrublue : 2/17/2021 8:28 pm : link
The helicopter drone obtaining some cool flyover footage, including a view of the rover from above, one device on the rover will convert Co2 to oxygen.....math, science and USA ingenuity a its very best!
Saw this rover at JPL clean room two years ago  
Sec 103 : 2/18/2021 10:56 am : link
Imagine a full sized dune buggy with a shitload of scientific equipment loaded on board. Unreal what we have done in terms of scientific advancement in space. The explanation of the mission was also a treat albeit at a 50,000 foot level. Keep in mind this was build, configured and tested in a almost sterile environment and then sterilized as a space craft in order to not bring earthly microbes to Mars and thereby contaminating any of the experiments... Just awesome stuff
RE: Saw this rover at JPL clean room two years ago  
Old Dirty : 2/18/2021 11:49 am : link
In comment 15156141 Sec 103 said:
Quote:
Imagine a full sized dune buggy with a shitload of scientific equipment loaded on board. Unreal what we have done in terms of scientific advancement in space. The explanation of the mission was also a treat albeit at a 50,000 foot level. Keep in mind this was build, configured and tested in a almost sterile environment and then sterilized as a space craft in order to not bring earthly microbes to Mars and thereby contaminating any of the experiments... Just awesome stuff


My company built a glovebox oven to sterilize the canisters that will be used to store the samples. We also helped another company make parts for the motors to drive the wheels. I would have loved to have seen the rover in person.
Needless to say I hope this mission is a success.
This is one of those big steps..  
BamaBlue : 2/18/2021 11:52 am : link
toward putting boots on the ground. I hope I live long enough to see humans step foot on Mars. I was 9 when Armstrong and Aldrin walked on the moon. It still gives me chills to remember that day...
Wow!  
Grey Pilgrim : 2/18/2021 12:14 pm : link
Thanks for posting!
RE: RE: Saw this rover at JPL clean room two years ago  
Sec 103 : 2/18/2021 2:43 pm : link
In comment 15156205 Old Dirty said:
Quote:
In comment 15156141 Sec 103 said:


Quote:


Imagine a full sized dune buggy with a shitload of scientific equipment loaded on board. Unreal what we have done in terms of scientific advancement in space. The explanation of the mission was also a treat albeit at a 50,000 foot level. Keep in mind this was build, configured and tested in a almost sterile environment and then sterilized as a space craft in order to not bring earthly microbes to Mars and thereby contaminating any of the experiments... Just awesome stuff



My company built a glovebox oven to sterilize the canisters that will be used to store the samples. We also helped another company make parts for the motors to drive the wheels. I would have loved to have seen the rover in person.
Needless to say I hope this mission is a success.


It's been a hell of a ride working on some of the most sophisticated and complex hardware known to us at this time, and we are breaking barriers constantly. Old dirty, my pleasure sir in knowing that you and your company made a contribution. Great stuff sir. And "there is no room for failure"!!! Even though our greatest lessons have often come from failures...
NASA is streaming the landing  
Kevin999 : 2/18/2021 3:17 pm : link
Still some time to go
NASA stream - ( New Window )
Looking Good So Far  
Trainmaster : 2/18/2021 3:52 pm : link
!
Parachute Deployed  
Trainmaster : 2/18/2021 3:53 pm : link
!
Landed apparently  
section125 : 2/18/2021 3:57 pm : link
safely....
Done!!!  
BillT : 2/18/2021 3:57 pm : link
Touchdown!!
A real touchdown!  
BillT : 2/18/2021 3:57 pm : link
.
Worth Way More Than 6 Points  
Trainmaster : 2/18/2021 3:59 pm : link
!
RE: Worth Way More Than 6 Points  
BillT : 2/18/2021 4:00 pm : link
In comment 15156563 Trainmaster said:
Quote:
!

Exactly.
It is is still streaming  
section125 : 2/18/2021 4:00 pm : link
info, so it survived.

Pictures coming in!
Yeah, Pictures Look Like An OK Area  
Trainmaster : 2/18/2021 4:24 pm : link
to depart from. Not too many large rocks.
Congrats to NASA  
Rick in Dallas : 2/18/2021 4:55 pm : link
...
Waiting For First High Res Pictures  
Trainmaster : 2/18/2021 8:04 pm : link
Should be great.
RE: Waiting For First High Res Pictures  
section125 : 2/18/2021 8:41 pm : link
In comment 15156764 Trainmaster said:
Quote:
Should be great.


Those originals were from the cameras used to "navigate" - think they called them engineering cameras..
Yes  
Trainmaster : 2/18/2021 11:00 pm : link
And there should be pictures and videos of the decent, which should also be cool.
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