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#51 2018-07-29 10:01:49

GW Johnson
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From: McGregor, Texas USA
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Re: New 2020 Mars Rover based on MSL

That's a lot of band-aids added to parachute braking just to land a ton.  So,  how to you land 10 tons?  Or 100 tons?  Or 1000 tons?

GW


GW Johnson
McGregor,  Texas

"There is nothing as expensive as a dead crew,  especially one dead from a bad management decision"

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#52 2018-07-29 10:58:18

SpaceNut
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Re: New 2020 Mars Rover based on MSL

The real difference is that if the crane had long legs it would not need to winch the rover to the gound as it had enough fuel to finish the landing. The s curve entry path is used to aerobrake the crafts speed over a longer distance while its still in the upper atmosphere.
So all that we really think that a dragon would not be used is the parachutes but these would be needed for earth return.
When we look at the systems of both fuel and engines seem to be the answer for retro propulsion.

https://en.wikipedia.org/wiki/Mars_Scie … ding_(EDL)

The mass of this EDM system, including parachute, sky crane, fuel and aeroshell, is 2,401 kg (5,293 lb).

The descent stage is a platform above the rover with eight variable thrust monopropellant hydrazine rocket thrusters on arms extending around this platform to slow the descent. Each rocket thruster, called a Mars Lander Engine (MLE), produces 400 to 3,100 N (90 to 697 lbf) of thrust and were derived from those used on the Viking landers.

I think you see where I am going with the scability towards what the dragon and larger as a means to prove we are on the correct path.

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#53 2018-07-29 11:56:32

SpaceNut
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Re: New 2020 Mars Rover based on MSL

More launch details
https://www.jpl.nasa.gov/news/press_kits/MSLLaunch.pdf

Mars Science Laboratory: Entry, Descent, and Landing System Performance
https://ntrs.nasa.gov/archive/nasa/casi … 007730.pdf

Just hoping to fill in details for scaling for any shape that we would land on mars

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#54 2018-08-01 22:31:27

SpaceNut
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Re: New 2020 Mars Rover based on MSL

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#55 2018-10-22 20:04:00

SpaceNut
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Re: New 2020 Mars Rover based on MSL

So where are we going?

Workshop To Discuss Mars 2020 Landing Site Selection

ooPIA22105_hires.jpg

habitable conditions on Mars in the ancient past

signs of past microbial life

The workshop begins with an opening address by the lead scientist for NASA's Mars Exploration Program, Michael Meyer. After project status, engineering constraints, and site-assessment criteria are discussed come the presentations. Fair warning: Expect plenty of technical jargon as terms like biosignatures, geochemical conditions, impact deformation, biogenetic potential, olivine lithologies, and serpentinization and its astrobiological potential roll off presenters' tongues.

For more information on the workshop, go to: https://marsnext.jpl.nasa.gov/workshops … 018_10.cfm

For information on how to listen in to workshop presentations, go to: https://ac.arc.nasa.gov/landing-site-workshop/

For more information on Mars 2020, go to: https://mars.nasa.gov/mars2020/

For more information about NASA's Mars missions, go to: https://mars.nasa.gov

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#56 2018-11-19 16:03:09

SpaceNut
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Re: New 2020 Mars Rover based on MSL

One of the most important steps to take before going to mars.. NASA has chosen Jezero Crater as the landing site after a five year search, during which every available detail of more than 60 candidate locations on the Red Planet was scrutinized and debated by the mission team and the planetary science community. NASA's Mars 2020 rover will look for signs of past life in a region of Mars where the ancient environment is believed to have been favorable for microbial life.

https://www.nasa.gov/press-release/nasa … 2020-rover

jezerocrater.jpg?itok=KiVGZpFl

This sure shows ancient Mars, water carved channels and transported sediments to form fans and deltas within lake basins. Jezero Crater delta, sediments contain clays and carbonates.

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#57 2018-11-20 03:15:03

elderflower
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Re: New 2020 Mars Rover based on MSL

From the crater frequency, the channel and parts of the delta have been resurfaced relatively recently.

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#58 2018-11-20 19:09:06

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Ya I notice how smooth the area looks but when it comes to Humans, we need to probe for what we can tell us for landing condition safety, does it have the resources man will need, as to is it a protected site more so than other locations are there caves to make use of. We need answers on water and so much more before man can go.

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#59 2018-12-16 19:42:10

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Where are we going this time Nasa?

https://mars.nasa.gov/mars2020/mission/ … selection/

There are three places on Mars are potential landing sites Columbia Hills, Jezero Crater, and NE Syrtis. Drum roll please.....

NASA has chosen Jezero Crater as the landing site for its upcoming Mars 2020 rover mission after a five-year search, during which details of more than 60 candidate locations on the Red Planet were scrutinized and debated by the mission team and the planetary science community.

The rover mission is scheduled to launch in July 2020 as NASA's next step in exploration of the Red Planet.

The end part of the landing will have a twist for getting to the exact spot that they want.

Mars2020-Landing-Technique-animated-640x360.gif

Mission scientists believe the 28-mile-wide (45-kilometer-wide) crater, once home to an ancient river delta, could have collected and preserved ancient organic molecules and other potential signs of microbial life from the water and sediments that flowed into the crater billions of years ago.

https://www.nasa.gov/mars2020

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#60 2018-12-22 20:50:42

SpaceNut
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Re: New 2020 Mars Rover based on MSL

This is why Nasa is chosing where it is going on Mars

si-mars_w_v8.jpg?itok=q24TWtoy

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#61 2019-02-28 21:08:08

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Peek inside the NASA Mars 2020 rover clean room

Go behind the scenes where NASA's next-gen Mars rover is under construction.

descentstage2020.jpg

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#62 2019-04-26 16:53:23

SpaceNut
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Re: New 2020 Mars Rover based on MSL

I saw that nasa is assembling for final testing the 2020 rover in its backshell today while reading articles.
https://www.spaceflightinsider.com/spac … r-testing/

PIA23164_fig1-e1556133172648.jpg

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#63 2019-06-04 21:43:43

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Getting better eye site for the rover will mean no more over expanded images.
NASA's Mars 2020 gets HD eyes

One of the first operations the Mars 2020 rover will perform after touching down on the Red Planet's Jezero Crater on Feb. 18, 2021, will be to raise its remote sensing mast (RSM), which carries important optics and instrumentation.
"Mastcam-Z will be the first Mars color camera that can zoom, enabling 3D images at unprecedented resolution," said Mastcam-Z Principal Investigator Jim Bell of Arizona State University in Tempe.

"With a resolution of three-hundredths of an inch [0.8 millimeters] in front of the rover and less than one-and-a-half inches [38 millimeters] from over 330 feet [100 meters] away - Mastcam-Z images will play a key role in selecting the best possible samples to return from Jezero Crater."

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#64 2019-06-08 19:02:07

SpaceNut
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Re: New 2020 Mars Rover based on MSL

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#65 2019-07-31 17:17:46

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Mars 2020 rover does biceps curls

mars-2020-rover-does-biceps-curls-hg.jpg

taken July 19, 2019, in the clean room of the Spacecraft Assembly Facility at JPL, the rover's 7-foot-long (2.1-meter-long) arm maneuvers its 88-pound (40-kilogram) sensor-laden turret as it moves from a deployed to a stowed configuration.

https://youtu.be/aT9kxH894lo?list=PLTiv … n1zlDkNx3q

The rover's arm includes five electrical motors and five joints (known as the shoulder azimuth joint, shoulder elevation joint, elbow joint, wrist joint and turret joint). The rover's turret includes HD cameras, the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) science instrument, the Planetary Instrument for X-ray Lithochemistry (PIXL), and a percussive drill and coring mechanism.

On Mars, the arm and turret will work together, allowing the rover to work as a human geologist would: by reaching out to interesting geologic features, abrading, analyzing and even collecting them for further study via Mars 2020's Sample Caching System, which will collect samples of Martian rock and soil that will be returned to Earth by a future mission.

https://mars.nasa.gov/mars2020

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#66 2019-08-22 16:39:38

SpaceNut
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Re: New 2020 Mars Rover based on MSL

We use analog vehicles and test sites for development to prove out how things will or could work.
Robots Explore 'Mars-Like' Lava Field in Iceland as Prep for NASA's Mars 2020 Rover

This summer, researchers tested rover and drone prototypes on lava fields in Iceland from July 8 to Aug. 5, 2019. In testing the drone, the team was able to make high-resolution maps of the surface, and using information collected by the drone, "the scientists were able to quickly make decisions about where they wanted to navigate the rover and which science target they wanted to pick. This work will inform NASA's Mars 2020 operations team.

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#67 2019-08-29 16:34:44

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Nasa is looking for names for the 2020 rover. Through Nov. 1, K-12 students in the U.S. are encouraged to enter an essay contest to name NASA's next Mars rover. NASA has selected two partner organizations to run a nationwide contest giving K-12 students in U.S. schools a chance to make history.

https://mars.nasa.gov/mars2020/particip … the-rover/

You can help name NASA's next Mars rover, even if you're not a kid.

https://www.space.com/mars-2020-rover-n … judge.html

NASA would appreciate some assistance vetting the thousands of expected submissions, so agency officials are encouraging folks to be volunteer judges. If you're a U.S. resident willing to spare about 5 hours of your time to make or break the dreams of children, you can apply here.

https://www.futureengineers.org/registr … metherover

The six-wheeled robot, whose body is based on that of NASA's Curiosity Mars rover, will land in February 2021 inside the 28-mile-wide (45 kilometers) Jezero Crater. Jezero was selected as the landing site partly because it harbored a river delta in the ancient past.

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#68 2019-08-29 16:40:21

SpaceNut
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#69 2019-09-06 17:03:09

SpaceNut
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Re: New 2020 Mars Rover based on MSL

After this mission the next up is the esa and then nothing it would seem.....

JPL.jpg?resize=1000%2C666

Engineers attached the autonomous rotorcraft in the High Bay 1 clean room at the Jet Propulsion Laboratory (JPL) in Pasadena, California with hopes of testing an aircraft’s ability to fly in a thinner atmosphere than that of Earth’s.

Sure would be quicker if it was human sized.....

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#70 2019-09-16 21:08:29

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Its not the first going to mars to have your name go as well https://mars.nasa.gov/participate/send- … /mars2020/
What we will be sending https://mars.jpl.nasa.gov/mars2020/mission/technology/
Learning from the other rovers Nasa did make some changes to this rover which I hope will make it last even longer.,
Launch Window:     July 17 - Aug. 5, 2020 on an Atlas v https://mars.jpl.nasa.gov/mars2020/miss … h-vehicle/
Mars 2020 lands at Jezero Crater on Feb. 18, 2021.

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#71 2019-09-28 20:52:05

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Time is running out to get your name sent to mars. september 30 is the last day

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#72 2019-10-27 10:46:30

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Building rovers is surely a slow process but we are geting ready for Mars 2020 stands on its own six wheels

mars-2020-rover-carries-full-weight-on-six-wheels-hg.jpg

The rover's legs (the black tubing visible above the wheels) are composed of titanium, while the wheels are made of aluminum. Measuring 20.7 inches (52.5 centimeters) in diameter and machined with traction-providing cleats, or grousers, the wheels are engineering models that will be replaced with flight models next year. Every wheel has its own motor. The two front and two rear wheels also have individual steering motors that enable the vehicle to turn a full 360 degrees in place.

When driving over uneven terrain, the rover's "rocker-bogie" suspension system - called that because of its multiple pivot points and struts - maintains a relatively constant weight on each wheel for stability. Rover drivers avoid terrain that would cause the vehicle to tilt more than 30 degrees, but even so, the rover can handle a 45-degree tilt in any direction without tipping over. It can also roll over obstacles and through depressions the size of its wheels.

When will it leave?

The rover will launch on a United Launch Alliance Atlas V rocket in July 2020 from Space Launch Complex 41 at Cape Canaveral Air Force Station.

When will it arrive and where?

When the rover lands at Jezero Crater on Feb. 18, 2021, it will be the first spacecraft in the history of planetary exploration with the ability to accurately retarget its point of touchdown during the landing sequence.

Of course closing statements of the article trumpet landing on the moon and sustainability for man to keep going to the moon by 2024 to 2028....

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#73 2019-11-03 15:10:13

SpaceNut
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Re: New 2020 Mars Rover based on MSL

Much like the nasa provided sites for space x to land with starship on mars the 2020 lander is also getting down to the final 3.
Picking a Landing Site for NASA's Mars 2020 Rover

candidates: Columbia Hills, Jezero Crater, NE Syrtis are not in the zone that space x is looking at.

https://www.teslarati.com/spacex-starsh … sa-photos/

Arcadia Planitia was viewed as most promising a low Martian plain once selected before the Red Dragon 2017 cancellation.

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#74 2019-11-03 17:33:39

GW Johnson
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Re: New 2020 Mars Rover based on MSL

We already know aluminum wheels are nonsense from the Curiosity experience.

Don't these idiots ever learn a real-world lesson?

GW


GW Johnson
McGregor,  Texas

"There is nothing as expensive as a dead crew,  especially one dead from a bad management decision"

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#75 2019-11-16 19:41:21

SpaceNut
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Re: New 2020 Mars Rover based on MSL

That would seem to be a big NOPE...

At future Mars landing spot, scientists spy mineral that could preserve signs of past life ot is home to deposits of hydrated silica, a mineral that just happens to be particularly good at preserving biosignatures.

"We know from Earth that this mineral phase is exceptional at preserving microfossils and other biosignatures, so that makes these outcrops exciting targets for the rover to explore."  The star attraction at Jezero is a large delta deposit formed by ancient rivers that fed the lake. The delta would have concentrated a wealth of material from a vast watershed. Deltas on Earth are known to be good at preserving signs of life.

Research Paper

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