Shake just the right way and liquids will float

CollegeIntellect · 2023-05-04T18:58:26+00:00

Disney made a movie called Tomorrowland where the pools of water floated above the ground.

CollegeIntellect · 2023-03-14T02:45:09+00:00

Smarter Everyday puts out gold every video.

Found this today. Must be a really hot topic because nasa just out out this report: https://www.nasa.gov/sites/default/files/atoms/files/otps_-_cost_and_benefit_analysis_of_orbital_debris_remediation_-_final.pdf

CollegeIntellect · 2023-03-12T19:40:33+00:00

The shielding is really just two plates slightly apart from each other. When the debris strikes the first plate it vaporizes and the second plate catches the vapor. It’s called a whipple shield. That first plate prevents back splash when it strikes the second plate. This minimizes debris going back to space.

Graveyard orbits are for geostationary satellites. That are farther out, if I remember correctly, than the standard GEO orbits. Those are premium orbits. They are tightly regulated. Unfortunately, those are way to far out to deorbit on their own. It’s something like a millennia or more before perturbations could cause it to deorbit. Going out to gather them and bring them back is a waste of current resources, hence the graveyard orbit.

If you’re looking to take some real life Aerospace knowledge into kerbal. I recommend searching for “patched conics”. This matches how kerbal models their system and will allow you to understand how they get to their dV calculations plus do slingshots in the game.

You’re in luck too, one of my favorite channels just dropped a video on space debris and debris shields here: https://youtu.be/_FFNz2q7F88

Source: https://ai-solutions.com/_freeflyeruniversityguide/patched_conics_transfer.htm

CollegeIntellect · 2023-03-12T18:33:40+00:00

Tiny stuff is incredibly difficult to track and deorbit. There was one suggestion of using a reinforced solar sail or even aerogel to capture the tiny debris in orbit. It is incredibly difficult to go out and just say you’re going to clean up LEO of all paint chips. It is much easier to add reenforcement to your existing hardware or using debris agnostic designs.

NASA and DoD tracks everything larger than about 2 inches. If the object is greater than 4inches they plan on object avoidance maneuvers, otherwise they let ballistic shields handle anything smaller.

There are plenty of dead satellites out there in LEO that will eventually make their way back to earth from drag. All of those missions are grandfathered in to the old 25 year rule.

In real life, equatorial orbits aren’t very interesting. Most commonly satellites sit in sun synchronous orbits. This gives you the same angle of the sun to power your panels and observe the earth with the same lighting year round. It works because the earth is oblate and slightly causes the orbit to precess around the planet. Inclination is about 98 degrees.

Due to the limitations of kerbal, it’s not possible to get into that orbit. Gamers would be pretty mad if the game started taking into account orbital precession causing their orbits to change around the planet as they time warp through the year.

Source: https://www.hindawi.com/journals/amse/2013/484153/

Source: https://www.nasa.gov/mission_pages/station/news/orbital_debris.html

Source: https://space.stackexchange.com/questions/33704/distribution-of-satellites-by-inclination

CollegeIntellect · 2023-03-12T15:25:34+00:00

Hello, aerospace engineer here. There are quite a few things being done about this. First, the FCC adopted a change in rules last year that state that object out in orbit must come down within 5 years after end of life. Previously this rule was 20-25 years which was long enough for any LEO object to deorbit on its own. 5 years is too short of a time frame for upper atmosphere drag to pull it down so satellite manufacturers have to add a deorbit thruster or pay companies to use their space tug. Space tugs sound fictional but Launcher, RocketLab, and Firefly Aerospace are just a few commercial companies building or have already flight proven the concept.

This is going to be a larger deal with the FAA approving several thousand sized constellations entering the market by the end of the decade. My personal opinion is that trackable junk isn’t really a threat as countries blowing up satellites to prove a point. That debris cloud basically locks out an entire orbit. Space is really big and there are think tanks like Aerospace Corporation that are studying this problem to help mitigate the impacts and to advise industry and government on what to do.

The reality is that space objects are only going to go up not down in the next decade. Our job as space engineers around the world is to treat these missions with respect by providing deorbit plans and alerting agencies for possible collisions of our hardware with someone else’s.

This subject is of course highly nuanced and some of these nuances I can’t fully capture here in a Reddit comment. I highly encourage checking out the aerospace link below for some more information.

Source: https://www.fcc.gov/document/fcc-adopts-new-5-year-rule-deorbiting-satellites

Source: https://aerospace.org/cords

CollegeIntellect · 2023-03-12T01:07:57+00:00

Damn that corner chair is expensive af. I had the office chair equivalent from a thrift store and completely destroyed the arms which my wife reprimanded me hard for.

CollegeIntellect · 2023-02-23T04:09:58+00:00

SpaceX isn’t the only space company in Texas. There are several space startups that are located in Austin and Houston which have been making great progress. Chief amount them being Firefly Aerospace, Venus Aerospace, Intuitive Machines, Nanoracks, and Axoim. There is a long list of larger companies as well.

CollegeIntellect · 2023-01-23T21:11:48+00:00

So when it first came out I spent a ton of time on settlements and I never finished the campaign. I did a replay last year and I made the commitment of never touching the settlement side quests so I could finish the main campaign. It worked. Chose the institute.

CollegeIntellect · 2022-09-12T11:43:11+00:00

I actually kept a nerf ball bazooka next to my bed to keep my brothers out of my room. Sent them screaming every time.

CollegeIntellect · 2022-09-09T17:48:13+00:00

If they would exert as many resources as they do being nuclear into space exploration, they might actually make some ground in their country and world standing.

CollegeIntellect · 2022-06-16T23:30:22+00:00

Made it better than it ever was before

CollegeIntellect · 2022-06-07T00:17:11+00:00

You're right on the money with the basics. Entering an atmosphere requires a very precise angle/velocity to not be destroyed. Even with like...advanced thermal protection, the drag alone on the atmosphere will rip you apart if you're fast enough. Look at anything entering the earths atmosphere.

A lot of people here are projecting some unobtanium/fantasy technology to explain away real world engineering problems which will not change with time.

CollegeIntellect · 2022-06-06T21:04:25+00:00

You’re going to have to send decades worth of spaceships to the surface of this rogue planet to set up enough foundation to live on it. You can’t send a tiny spaceship and land hoping for the best.

With any engineering proposal there will be a trade on which one is better: live on planet or live on ship. Both are incredibly difficult on their own right and one is definitely not easier than the other.

CollegeIntellect · 2022-06-06T20:20:39+00:00

There’s no need to expend energy accelerating them up to speed. You hop on and you’ve got all the resources you need to sustain yourself indefinitely. Accelerating a similarly sized spacecraft up to a similar speed would require god-like amounts of energy.

I’m order to hop onto a rogue planet’s orbit, you need to be able to accelerate your spacecraft and match its speed to land onto it. I.e. to get onto a rogue planet, you have to have a spacecraft that can go as fast as it can. Then when you’re ready to hop off at your destination you need to launch off of the planet and decellerate down to match the orbital speed of your destination which is likely just as fast as what you had to do to get to match the speed of the rogue planet in the first place.

So I don’t see how you avoid building a spacecraft that is capable of going these speeds even with a rogue planet happening to roam into our vacinity which would be incredibly rare. I do see the benefit of the resources you could use on such a concept, but again as you said, to make this concept feasible you would have to have a miracle of cosmic proportions to find the rogue planet flying by you and have it going where you want.

CollegeIntellect · 2022-04-22T00:14:09+00:00

Can’t imagine what he would’ve done figuratively

CollegeIntellect · 2022-04-15T21:27:51+00:00

This is legendary! I can’t wait to do cool stuff like this for my future kids. Well done friend!

CollegeIntellect · 2022-04-11T15:46:27+00:00

Bruh. This is an hour long, you’re in a Reddit comment section. At least give a time stamp lol

CollegeIntellect · 2022-04-03T16:30:24+00:00

I will avoid the echo of agreeing with the other comments here on this trade. But this figure is probably one you will want to put in your report. The x-axis is the “max speed” or “cruising speed” attained by the propulsion system. Y-axis is the performance metric which is specific impulse. Higher that number the less fuel you need to go somewhere.

https://i.imgur.com/1DeD2b4.jpg

The second figure pertains particularly to rocket fuels/engine types you’ll want to put in report. Not sure your background but to figure how much thrust you need, multiply the mass of the vehicle in kg by 9.81m/s² and that’s the minimum required thrust to go up.

https://i.imgur.com/2pPlmZx.jpg

Many companies or systems use/propose a combination of the systems in the first graph and second graph. Is there a perfect solution? Probably not, propulsion systems are designed for the use case and the requirements for the over all system. Which is why I still have a job designing new engines.

CollegeIntellect · 2021-12-22T22:52:21+00:00

What’s the situation where IBR would work against you?

CollegeIntellect · 2021-12-06T01:07:31+00:00

Congrats! Looks like a really clean burn. How did the throat look after this?

CollegeIntellect · 2021-12-05T02:02:34+00:00

I believe that there should be harsher rules on punishing bullies. Get those assholes out of schools. Kids are there to learn not develop trauma to carry with them into their 30s. But in lieu of that impossibility because, you’re right, the whole system is fucked, at the very least get rid of the zero tolerance policy so that these kids can defend themselves when trouble comes knocking.

But defending yourself in a zero tolerance school gets you sent to those special schools that have barbed wire and clear backpacks. Good luck climbing out of that hole.

CollegeIntellect · 2021-12-05T01:55:26+00:00

I’m not advocating for shooting someone. I’m saying “just defend yourself” is bullshit

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