Spacecraft Power
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- Опубліковано 20 вер 2024
- There are no gas stations or power outlets in space. That's why NASA's Curiosity rover on Mars--and some other NASA spacecraft that explore the solar system--use something called "radioisotope power." NASA's Jet Propulsion Laboratory is working with the Department of Energy on ways to make the next generation of radioisotope power systems even more powerful and capable. This video explains more. For details, visit rps.nasa.gov
Thought I was watching Minute Physics there for a while until I remembered. Good video
That's exactly what I thought at first while looking at the thumbnail
and in ksp we know this as infitite power
On mars, we know this as a heater.
shhhh no debug menu spoilers
Stol Theds Martian reference?
Mercury The Metallic Liquid Correct; here's your internet point sir.
I want a radioisotope baseboard heater :)
We are currently discussing Radiactive decay in physics class, so this was very interesting :)
NASA: one of the sources of inspiration with regards to engineering. I always want to be better, improve and get over established limits due to their research, innovation and brilliant output despite governmental bureaucracy getting in the way at times.
Thanks for existing!
pretty awesome. I was just as impressed with the artwork.
Would love a more candid conversation about RTG with respects for selecting longer half-lives vs using more unstable isotopes. This would be a conversation about heat generated over the lifetime vs net mass.
I was creating a website and while looking for videos about energy in space and I stumbled upon this
Very cute! Thanks JPL!
I LOVE SCIENCE SO DAMN MUCH!
If they are powered by the heat generated by the decay of the radioisotopes, then why do they need to be designed with (what appear to be at least) cooling fins? Can they overheat, or do they need a temperature gradient to work perhaps?
They use the heat of the isotope and the cool of the fins to make power. the larger the temperature gap the more energy
I had no idea plutonium (238?) Is just naturally glowing red hot.
i wish i knew physics perfectly
Can I buy one on eBay?
zombarmk I'm pretty sure eBay has rules against selling Plutonium-238
Vectored Thrust
=(
Good video :) Skutterudite and EMMRTG are news to me, so thanks! Keep up the awesome work.
I did a report on thermocouples a few months ago.
Anyone know how much electricity produce by MMRTG?
About 110 watts according to wikipedia.
But it doesn't really explain is there turbin ?
So... an ice giant orbiter or Sedna flyby are on the cards again?
You middlefinger is supposed to support the pen from UNDERNEATH!
Nothing new. Use a sterling engine. Stirling engines have been around since before the turn of the 19th century. In many ways I am surprised that the space station doesnt have one in service up there already. One side exposed to the heat of the internal living quarters, the other side exposed to the cold of outer space. The contrast would give free rotational power based purely on the temperature change.
Stirling engines would be too heavy. They would still require a heat source and a cool side with a heat sink. Instead of a thin solid state device, you replace it with the big, bulky sterling engine. The engine also has a lot more parts that can break. On spacecraft you want things to be as light as possible, so a thin membrane will always be preferred over a larger mechanical device.
"One side exposed to the heat of the internal living quarters, the other side exposed to the cold of outer space." With a sterling engine you would only really get to use the heat flow over a small area of the station, so you would need multiple to make power, especially with the low temperature difference compared to a hot chunk of radioactive material. The generate enough power from that you would need multiple, which would add a lot more weight. You could create a membrane on thermocouples, but you still might not make enough power to make it worth it. To add to it, you probably want the living quarters to stay warm. Covering it in generators which make power from the heat leaving might make it easier for heat to leave, and the extra heat that might need to be produced will take more power than what you generate.
There is actually a an advanced sterling radioisotope generator (ASRG). solarsystem.nasa.gov/rps/docs/APP%20ASRG%20Fact%20Sheet%20v3%209-3-13.pdf
NASA cancelled the Stirling project due to budget constraints, and instead will continue to use the MMRTG on the 2020 Mars Rover.
Powerful thing in ksp
JPL should consider reviving NERVA.
did minute physics help out?
Andrew Chen there are plenty of videos with this drawing style, minute physics just makes lots of them.
superb, keep going
Good video.
SOOOO COOL
272.1575...
400.890.
864...
Pluto
I wish fission could be miniaturized like combustion engines
*fusion
Background music is to loud
Maybe we can improve it then use it for cars! Would be so cool, right? XD
Propulsion Question, Okay the thrusters are acting against the gravity of the planet (to push upon), thus enabling it to maneuver on the xyz axis, but what about in outer space where you'er nowhere near a planet, what are the thrusters pushing against to provide momentum on the xyz axis, what are the thrusters acting upon ???
A space craft that is stationary, can it go forward if it fire's it's rear thrusters, or would it remain stationary and the thrusters just spew out like a gyser ???
Is the sun's gravity and all the planets gravity, is it that strong of an influence throughout the solar system, for the thrusters to act against to provide momentum on the xyz axis, if that is what the thrusters acting against if so then what happens if you leave the gravitational influence of the solar system .... what will your thrusters be acting against to provide that momentum on the xyz axis ?
thank you!
I think I can answer your question. It's all about mass. The thrusters are more like "reacting" upon than acting upon.When combustion takes place inside the engine the expanding molecules of the fuel (usually 2 chemicals such as oxygen and another that reacts explosively to the presence of oxygen) rapidly expands - then the fuel's "remains" (molecules)- as a gas - that has mass (weight) - is, as intended, builds pressure inside the engine and finds an exit point - thruster nozzle. The spent fuel gas molecules has mass - that "acts upon" the thruster and causes spacecraft to move in response.
Another method of propulsion considered is that of a very large "sail" that, when photons from energy source such as the sun, hit the sail and, because the light photons having mass (very tiny amount) - hit the sail and moves it in direction away from the light's
source. This type of propulsion has been looked into for very long distance space travel.
Hope this was of help. Steve Hawkins "A Brief History of Time" book has lots of great info - just suggesting as a read.
The thrusters are not 'acting against gravity' or 'the atmosphere', what is happening is the shuttle or rocket is creating a controlled, directed, and sustained explosion. The force from the explosion is focused, like a gun barrel, opposite where you want to travel. Every force creates an equal yet opposite force, so as your blasting fire out the back it creates a push towards the front. No atmosphere required, and actually in space there isn't anything to 'slow' you down physically so its much more effective. Would be interesting to see an astronaut fill a balloon in space and let the end go and watch it shoot off forever into the vacuum
Are we ever going to send an unmanned mission to Mars that is capable of refueling itself on the surface? I understand it is currently impossible mostly due to weight issues. How cool would that be? It can refuel itself, it could repair itself, we'd get it stuck and the mission would end early... probably. I like the concept phase, anything is possible here.
John Hightower spacex has a plan to create duel on the Martian surface. it would turn carbon dioxide and water into methane and oxygen.
taylor sims That would definitely be a step.
All in the planning phases though. Not much has actually been developed yet.
In addition to what taylor is saying, the NASA Mars 2020 Rover will have many new instruments including one called MOXIE which stands for the Mars Oxygen ISRU Experiment. It's a small device which takes in the Martian atmopshere which is rich in Carbon Dioxide and converts it into oxygen. According to NASA, if the one in 2020 works as planned they could send one 100 times bigger with a radioisotope thermoelectric generator to help support humans. NASA and SpaceX have a very good relationship so this research can definitely help SpaceX in their venture to Mars.
NASA can safe the world
Doesn't it have solar pannels as well as a back up?
Probably
Spacecraft that use RTGs always go to places where sunlight is either unreliable or is so far away from the sun that they produce almost no power at all.
That would be probes like Cassini, New Horizons, and the Voyagers. Tiny pellets of the RTG fuel can also be instead put inside the spacecraft to keep the electronics warm. I believe this was done on the Pathfinders
I thought Tesla was already doing recapture like that
Next in line - MMORTG
crazy.
that was a free publicity by JPL for of nuclear industry, because mankind dose not know structure of matter to be able to produce electricity safely and efficiently. MG1
P-238 is non-fissile. No possibility of meltdown. Just keep it shielded, and you're good.
I have invented more better model of RTG which can create more electricity
Круто ваще. Спасибо. А то как раз было интересно
and then we have solar panels
JKerman511 they aren't that good working for example near Jupiter or on landscapes. Also they hate radiation. And they are heavy.
Da Ve light is radiation...
JKerman511 not that kind of radiation. Radioactive Radiation is hardly damaging panels. Also they loose power at higher distance from the sun
Wish I could do million likes for the person who draw. :'D
Sometimes I wonder Nasa... What we do without you. :'D
You can find best solutions on Avasva website.
Cutesy 'drawing on a whiteboard' cliché? Check.
Annoying and distracting background music? Check.
Puerile narrative? Check.
Remember when NASA didn't patronise its audience?
They aren't trying to patronise you. NASA is attempting to target a younger/wider audience to get more people interested in this type of science. You are simply not the target audience.
NASA is copying Apple's business model.
I don't think that the music was annoying, and it is appealing to younger audience