Author Topic: Moon Shot, Japan-Toyota...  (Read 10821 times)

Offline Tywin

Moon Shot, Japan-Toyota...
« on: 03/07/2019 06:04 pm »
Well after SpaceIl and soon the Audi quattro, with the mission of PTScientists...it's look like Japan and Toyota want to be part of this new race for the Moon again...

Quote
Toyota is teaming up with Japan's space agency on a planned mission to the Moon, with the Japanese auto giant expected to develop a lunar rover, officials and local media said Wednesday.

It will be the car manufacturer's first full-fledged entry into space exploration, after the company jointly developed a small robot sent to the International Space Station.

"We are planning to cooperate with Toyota in an exploration mission to the Moon," said a spokesman with the Japan Aerospace Exploration Agency (JAXA).

Quote
Toyota also confirmed plans to announce a joint project with JAXA "on mobility and a space probe" but declined to comment further.

http://www.moondaily.com/reports/Moon_shot_Toyota_Japan_space_agency_plan_lunar_mission_999.html

Well this is more interesting every day...


« Last Edit: 03/07/2019 06:07 pm by Tywin »
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Online Blackstar

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Re: Moon Shot, Japan-Toyota...
« Reply #1 on: 03/07/2019 07:48 pm »
"Jiji Press news agency said the car giant is expected to jointly develop a "mobility method" to be used on the lunar surface for the mission."

Sounds like they want to build a rover. The only surprise is that they want to do it, but I have no doubts that they could do it. Toyota is a huge company with a lot of high tech expertise, and what they don't have they can buy. I only hope they decide to put some serious money into it.

Offline mcgyver

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Re: Moon Shot, Japan-Toyota...
« Reply #2 on: 03/12/2019 07:47 am »
Live press conference right now:
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Offline TrevorMonty

Re: Moon Shot, Japan-Toyota...
« Reply #3 on: 03/12/2019 09:00 am »
While landers are essential for reaching lunar surface, its pressurized rovers like this that well enable humans to explore moon and maybe Mars.

I'd actually put these rovers ahead of a moon base in importance.

Offline yoichi

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Re: Moon Shot, Japan-Toyota...
« Reply #4 on: 03/12/2019 09:28 am »
http://global.jaxa.jp/press/2019/03/20190312a.html

JAXA and Toyota Reach Agreement on Taking Up the Challenge
of International Space Exploration —Aim is to make future lunar mobility a reality—


Tokyo, Japan, March 12, 2019—The Japan Aerospace Exploration Agency (JAXA) and Toyota Motor Corporation (Toyota) agreed today to study the possibility of collaborating on international space exploration. As a first step, JAXA and Toyota agreed to further cooperate on and accelerate their ongoing joint study*1 of a manned, pressurized rover*2 that employs fuel cell vehicle technologies. Such a form of mobility is deemed necessary for human exploration activities on the lunar surface. Even with the limited amount of energy that can be transported to the moon, the pressurized rover would have a total lunar-surface cruising range of more than 10,000 km.

Concept proposal for the pressurized rover being studied by JAXA and Toyota
Length: 6.0 m; width: 5.2 m; height: 3.8 m (about the size of two microbuses)
Living space: 13m3
Capable of accommodating two people (four people in an emergency)



Offline mythos917

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Re: Moon Shot, Japan-Toyota...
« Reply #5 on: 03/12/2019 10:53 am »
More images from Toyota's press release.

Offline Steven Pietrobon

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Re: Moon Shot, Japan-Toyota...
« Reply #6 on: 03/13/2019 08:01 am »
OMG, at the end of the video, you see the Earth rising from the Lunar surface! You would only see that if this happens:

« Last Edit: 03/13/2019 08:09 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline daedalus1

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Re: Moon Shot, Japan-Toyota...
« Reply #7 on: 03/13/2019 08:33 am »
OMG, at the end of the video, you see the Earth rising from the Lunar surface! You would only see that if this happens:



LOL yes correct. I'm currently watching that series on UK tv. One of the first episodes takes place on Ultima Thule.

Offline jarnu

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Re: Moon Shot, Japan-Toyota...
« Reply #8 on: 03/13/2019 08:47 am »
There are other car-related web places where they also show the video, or a link to the youtube video, plus the official photos and the bits of info Toyota and Jaxa provided.
https://www.carscoops.com/2019/03/toyotas-lunar-rover-will-allow-humans-to-drive-on-the-moon-again/
But, again, it seems the same info. Youtube in English:

My questions, as early as it is, are: Big hardware, how they plan to transport and deploy this vehicle there? Few lights at the front, I expected to have more of them, and all around, if the vehicle is prepared for the lunar night. Fuel Cell means tanks of liquid hydrogen, stored in the vehicle long term. Is it not a problem nowadays? And the reason you can't have space hydrogen tanks waiting for a vehicle in orbit? Exposed long term to lunar surface: radiation, micro-meteoroids, protection for crew, ... More than a vehicle for surface operations, if the size, pressurized internal environment, and long range, will be what they announce, it seems more like a surface mobile lunar base. Almost.

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Re: Moon Shot, Japan-Toyota...
« Reply #9 on: 03/13/2019 12:28 pm »
This is vaporware. It is going nowhere. If they had proposed something small, I would have believed it.

Offline plutogno

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Re: Moon Shot, Japan-Toyota...
« Reply #10 on: 03/13/2019 06:52 pm »
yep. why is it even in the space science section?

Offline zubenelgenubi

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Re: Moon Shot, Japan-Toyota...
« Reply #11 on: 03/13/2019 07:22 pm »
There is a very similar thread in the "Japanese Launchers" sub-forum:
JAXA, Toyota co-operation: crewed, pressurized, fuel-cell driven lunar rover
« Last Edit: 03/13/2019 07:23 pm by zubenelgenubi »
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Re: Moon Shot, Japan-Toyota...
« Reply #12 on: 03/14/2019 05:08 am »
yep. why is it even in the space science section?

I just suggested to the mods to move this to Advanced Concepts.  See what happens.

Update: Thread moved.
« Last Edit: 03/15/2019 04:28 am by catdlr »
It's Tony De La Rosa, ...I don't create this stuff, I just report it.

Offline mcgyver

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Re: Moon Shot, Japan-Toyota...
« Reply #13 on: 03/15/2019 11:59 am »
OMG, at the end of the video, you see the Earth rising from the Lunar surface! You would only see that if this happens:


I hope you are kidding.
https://earthsky.org/space/apollo-8-earthrise-december-24-1968-new-simulation
« Last Edit: 03/15/2019 12:11 pm by mcgyver »

Offline edzieba

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Re: Moon Shot, Japan-Toyota...
« Reply #14 on: 03/15/2019 12:06 pm »
OMG, at the end of the video, you see the Earth rising from the Lunar surface! You would only see that if this happens:


I hoppe you are kidding.
https://earthsky.org/space/apollo-8-earthrise-december-24-1968-new-simulation
The Moon is tidally locked to the Earth. You cannot see 'Earthrise' from the Lunar surface, as the Earth will not move relative to the surface (barring a small amount of libration). The Apollo 8 moonrise is due to Apollo being in orbit around the Moon, not on the Lunar surface.

Offline Elrond Cupboard

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Re: Moon Shot, Japan-Toyota...
« Reply #15 on: 03/15/2019 02:36 pm »
If Toyota's rover travels very, very fast you could see earthrise.

Offline Ludus

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Re: Moon Shot, Japan-Toyota...
« Reply #16 on: 03/16/2019 05:11 am »
Zubrin’s LEV makes much more sense and would make this unnecessary. Both would have similar usable volume, both would use hydrolox but the LEV could both transport passengers from earth orbit and hop around to anywhere on the moon. This would need to be transported separately to the moon and once there would be comparatively limited in range.

Toyota just wants a plausible sounding use for fuel cells. Even on the moon, for wheeled vehicles, batteries are a better way to store limited solar power. Even when ur already making hydrogen and oxygen for propellant.

Offline ncb1397

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Re: Moon Shot, Japan-Toyota...
« Reply #17 on: 03/16/2019 05:55 am »
This is vaporware. It is going nowhere. If they had proposed something small, I would have believed it.

Interesting, $270 billion revenue company proposes rover, it is vaporware. $2 billion revenue company proposes BFS (many times the size), nobody bats an eye lid.

Zubrin’s LEV makes much more sense and would make this unnecessary.

Ehh, LEV permanently disposes of consumable fuel. This you could just store the by products and then recycle it back at base. Mobility would be a mix of rover + free flying vehicles.


This would need to be transported separately to the moon and once there would be comparatively limited in range.

It seems to be designed with a range goal of circumnavigating (or nearly circumnavigating) the moon which requires ~11,000 km of range.
« Last Edit: 03/16/2019 06:04 am by ncb1397 »

Offline ncb1397

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Re: Moon Shot, Japan-Toyota...
« Reply #18 on: 03/16/2019 06:55 am »
Fuel Cell means tanks of liquid hydrogen, stored in the vehicle long term. Is it not a problem nowadays? And the reason you can't have space hydrogen tanks waiting for a vehicle in orbit?

It may not be liquid hydrogen. This design has 15 tanks. For argument's sake, I will make a few assumptions

1.)tank diameter = .3 meters
2.)tank length = 2 meters
3.)tank pressure = 1000 bar (a bit higher than the consumer grade 700 bar tanks in current hydrogen cars)
4.)the tanks shown are the hydrogen tanks and the O2 tanks aren't shown
5.)gas temperature = 10 degrees C

Each tank therefore is .14 cubic meters of volume and all tanks have a combined volume of 2.1 cubic meters. This translates to ~92,500 moles of hydrogen with a molar mass of 2 grams / mole or a total hydrogen storage capacity of 185 kg. For reference, the Hyundia Nexo is a SUV with a range of 380 miles and a hydrogen storage capacity of 6.3 kg or a fuel economy of 60 miles per kg. If this could get similar fuel economy (because of lower gravity and no air resistance despite the larger size and poor road conditions), the range would be 11,100 miles. 

edit: Adjusting my assumptions, if there are 10 tanks of H2 and 5 tanks of O2, this would reduce the range by a third to ~7400 miles or ~12,000 km. Hydrogen storage capacity would be ~123 kg and O2 capacity would be ~1000 kg.
« Last Edit: 03/16/2019 07:22 am by ncb1397 »

Offline Asteroza

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Re: Moon Shot, Japan-Toyota...
« Reply #19 on: 03/17/2019 10:25 pm »
Mobility in terms of Toyota also encompass some human size level stuff, like rideable walkers (think recliner with legs). They also do some wheeled mobility stuff, but nothing that would be suitable for regolith ops. A walker with wheeled feet might be interesting for a centaur mount type vehicle.

But this announcement smells, especially with the fuel cell stuff, which is turning into a major boondongle for Toyota and the japanese government...

Offline TrevorMonty

Re: Moon Shot, Japan-Toyota...
« Reply #20 on: 03/17/2019 11:11 pm »
Fuel Cell means tanks of liquid hydrogen, stored in the vehicle long term. Is it not a problem nowadays? And the reason you can't have space hydrogen tanks waiting for a vehicle in orbit?

It may not be liquid hydrogen. This design has 15 tanks. For argument's sake, I will make a few assumptions

1.)tank diameter = .3 meters
2.)tank length = 2 meters
3.)tank pressure = 1000 bar (a bit higher than the consumer grade 700 bar tanks in current hydrogen cars)
4.)the tanks shown are the hydrogen tanks and the O2 tanks aren't shown
5.)gas temperature = 10 degrees C

Each tank therefore is .14 cubic meters of volume and all tanks have a combined volume of 2.1 cubic meters. This translates to ~92,500 moles of hydrogen with a molar mass of 2 grams / mole or a total hydrogen storage capacity of 185 kg. For reference, the Hyundia Nexo is a SUV with a range of 380 miles and a hydrogen storage capacity of 6.3 kg or a fuel economy of 60 miles per kg. If this could get similar fuel economy (because of lower gravity and no air resistance despite the larger size and poor road conditions), the range would be 11,100 miles. 

edit: Adjusting my assumptions, if there are 10 tanks of H2 and 5 tanks of O2, this would reduce the range by a third to ~7400 miles or ~12,000 km. Hydrogen storage capacity would be ~123 kg and O2 capacity would be ~1000 kg.
For life support during lunar night allow for 1kg per 2kwh. I'm not sure if that 2kwh is all 100% electricity or mostly electricity with some waste heat . Either way they should be able to use all of it as heating will be biggest power consumer for life support. Don't how much power is required during lunar night for live support, but needs to survive 336 hours of darkness. Maybe case of sitting out the night to conserve power. Shouldn't have any problems keeping rover from freezing when unmanned, even mobile.

What's not clear is if it will convert water back into H and O for storage during day or be refuelled between missions.

Offline TrevorMonty

Re: Moon Shot, Japan-Toyota...
« Reply #21 on: 03/17/2019 11:31 pm »
The market for rover of this size for servicinb lunar base could be dozen or more.
1)Exploration rover to support 2 crew for weeks.
2)Day excursion rover carrying 6-8 around lunar base and servicing landers. Could get away with just battery and solar power.
3)Unmanned mining rovers, with or with fuel cells depending where they are working.
4)Unmanned trucks for supply runs between lunar base and outposts.

 


Offline ncb1397

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Re: Moon Shot, Japan-Toyota...
« Reply #22 on: 03/18/2019 01:37 am »
If lunar night is a problem, a rover platform can navigate around it. You have to maintain ~9 miles per hour at the equator and that goes down as you approach the poles.

Probably the best thing to do during lunar night is to keep moving to wherever you are headed. Fuel cells generate quite a bit of waste heat.

edit: Doing some pixel measuring on the solar array - it looks to be ~2.5 meters by ~3.8 meters. This should generate about 3 kw continuously with sun tracking. If we go by the assumption that you might be able to get similar mileage to SUVs, electric vehicles get about 3 miles per kwh. This should be able to produce power for about 9 miles each hour of charge. It may not be able to drive and charge though, so it couldn't out run lunar night continuously at the equator. Polar regions should be fine though.
« Last Edit: 03/18/2019 02:20 am by ncb1397 »

Offline su27k

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Re: Moon Shot, Japan-Toyota...
« Reply #23 on: 03/18/2019 03:06 am »
This is vaporware. It is going nowhere. If they had proposed something small, I would have believed it.

Interesting, $270 billion revenue company proposes rover, it is vaporware. $2 billion revenue company proposes BFS (many times the size), nobody bats an eye lid.

He probably thinks BFR is vaporware too....

Also, it helps that the $2 billion revenue company is already flying something 1/3rd the size of BFR...

But as a fan of SpaceX, I'm glad to see JAXA and Toyota is thinking about rovers like this, we'll need payloads like these once BFR can send 25 to 100 tons to lunar surface. The rover size is not large at all, I think it's just about right for a pressurized long range rover with airlock.

Offline Lar

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Re: Moon Shot, Japan-Toyota...
« Reply #24 on: 03/20/2019 11:20 am »
This rover is at the stage of "bending light" (powerpoint), and is a nice distraction/PR effort for a company whose main focus is elsewhere.

SS/SH is at the bending metal stage, and is a parlay of what has been invested and won back so far, as was just about everything else Musk has done, starting from a gift computer.

Totally different credibility levels.
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Re: Moon Shot, Japan-Toyota...
« Reply #25 on: 04/02/2019 04:28 am »
If lunar night is a problem, a rover platform can navigate around it. You have to maintain ~9 miles per hour at the equator and that goes down as you approach the poles.

Probably the best thing to do during lunar night is to keep moving to wherever you are headed. Fuel cells generate quite a bit of waste heat.

edit: Doing some pixel measuring on the solar array - it looks to be ~2.5 meters by ~3.8 meters. This should generate about 3 kw continuously with sun tracking. If we go by the assumption that you might be able to get similar mileage to SUVs, electric vehicles get about 3 miles per kwh. This should be able to produce power for about 9 miles each hour of charge. It may not be able to drive and charge though, so it couldn't out run lunar night continuously at the equator. Polar regions should be fine though.

They could tow a trailer with a similar sized panel on a gimbal mount.

Offline Tywin

Re: Moon Shot, Japan-Toyota...
« Reply #26 on: 04/15/2019 02:05 am »
Bridgestone, joint to the mission with JAXA and Toyota...

Quote
Bridgestone Corporation has announced that it will take part in an international space exploration mission together with the Japan Aerospace Exploration Agency (JAXA) and Toyota Motor Corporation. Recently announced by JAXA and Toyota, the goals of this mission are to expand the domain of human activity and develop intellectual property on space exploration. Bridgestone's mission assignment is to research the performance needs of tires for use on manned, pressurized rovers*1 in order to help these rovers make better contact with the surface of the moon.

http://www.moondaily.com/reports/Bridgestone_Joins_International_Space_Exploration_Mission_with_JAXA_and_Toyota_999.html
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Offline ncb1397

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Re: Moon Shot, Japan-Toyota...
« Reply #27 on: 08/07/2019 05:18 pm »
They recently announced an agreement in July. Toyota's Press release has details on the planned timeline:

Quote
Fiscal year 2019   Identifying technological elements that need to be developed for driving on the surface of the moon; drawing up specifications for a prototype rover*
Fiscal year 2020   Manufacturing test parts for each technological element; manufacturing a prototype rover
Fiscal year 2021   Testing and evaluating both the manufactured test parts and the prototype rover

...

Tentative plan aiming to launch the lunar rover in 2029

From 2022   Manufacture and evaluation of a 1:1 scale prototype rover; acquisition and verification testing of data on driving systems required to explore the moon's polar regions
From 2024   Design, manufacture, and evaluation of an engineering model of the rover; design of the actual flight model
From 2027   Manufacture, and performance and quality testing of the flight model
https://global.toyota/en/newsroom/corporate/28866297.html

Offline gaballard

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Re: Moon Shot, Japan-Toyota...
« Reply #28 on: 08/07/2019 08:00 pm »
It looks like the rover equivalent of the crazy prototype car designs that get shown off at car shows but never get anywhere near production.
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Offline ChrisWilson68

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Re: Moon Shot, Japan-Toyota...
« Reply #29 on: 08/07/2019 08:50 pm »
It looks like the rover equivalent of the crazy prototype car designs that get shown off at car shows but never get anywhere near production.

Yeah, but with some government handouts thrown in for good measure.

It's yet another project where there's a near-term component that is cheap enough for the government to actually fund that builds some hardware that won't actually be used, and a long-term component that is fantasy and won't ever happen.  The only real value would be in the fantasy component.

But the government and the company get their PR and the people working on it get their jobs.  Only the taxpayers lose.

Offline Zed_Noir

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Re: Moon Shot, Japan-Toyota...
« Reply #30 on: 08/08/2019 06:41 am »
Will point out that the Toyota Lunar Rover as described by the images so far can only be transported to the Lunar surface in a Chomper Starship. It is too big to go through the Starship cargo hatch.

Offline JulesVerneATV

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Re: Moon Shot, Japan-Toyota...
« Reply #31 on: 05/19/2025 07:43 pm »
Japan Says It’s Ready To Help With U.S. Lunar Missions As Trump’s Budget Pullback Hits NASA

https://offthefrontpage.com/japan-says-its-ready-to-help-with-u-s-lunar-missions/

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Re: Moon Shot, Japan-Toyota...
« Reply #32 on: 05/19/2025 08:01 pm »
Will point out that the Toyota Lunar Rover as described by the images so far can only be transported to the Lunar surface in a Chomper Starship. It is too big to go through the Starship cargo hatch.
Not quite correct. True, it cannot be transported in an HLS, but we do not know what the configuration of the Ship will be, and "chomper" is unlikely.

Offline BN

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Re: Moon Shot, Japan-Toyota...
« Reply #33 on: 05/20/2025 12:41 pm »
Japan Says It’s Ready To Help With U.S. Lunar Missions As Trump’s Budget Pullback Hits NASA

https://offthefrontpage.com/japan-says-its-ready-to-help-with-u-s-lunar-missions/

jaxa's annual budget is barely 1 billion usd

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