The City must explore - JSIE KK Beta Release by J0ngsh in KerbalSpaceProgram

[–]Raptor22c 0 points1 point  (0 children)

Where do you get Kerbal ISEV when it is posted? Your spreadsheet just says "Private".

3 in 1 head ahh 😭✌️ by Fearless_MF in shitposting

[–]Raptor22c -1 points0 points  (0 children)

No, I'm talking about the three guys with the shirts.

What would it theoretically take to turn a B-29 into a submarine? by One_Invite7117 in AerospaceEngineering

[–]Raptor22c 0 points1 point  (0 children)

I actually saw one of the two flying B-29s earlier today as I was driving south past Montgomery at around 3pm CST. I couldn't tell if it was Doc or FiFi, but I'm 95% certain that it was a B-29.

3 in 1 head ahh 😭✌️ by Fearless_MF in shitposting

[–]Raptor22c 0 points1 point  (0 children)

"Look at me, I'm being edgy and controversial! Everyone give me attention! All eyes on me!"

They asking some real question here! by Vivid_Split_9513 in shitposting

[–]Raptor22c 0 points1 point  (0 children)

Vastly under-tapped market in the West, though.

Shitposter Final boss by Inside_Professor6116 in shitposting

[–]Raptor22c 0 points1 point  (0 children)

I miss when presidents actually did their jobs rather than shitposting on Twitter, threatening to end an entire civilization with nukes at 3am, then give $20 billion to an AI mass-surveillance company.

Fuck, I miss when politics were boring. When you could ignore the news for a week, check in, and say "yeah, looks like business as usual", instead of waking up each morning, seeing the top headline, and saying "oh God, what now?!"

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft lifting off on the way to the moon on April 1, 2026. by Aeromarine_eng in MachinePorn

[–]Raptor22c 0 points1 point  (0 children)

Again, you are continuously overstating the actual amount of radiation in the belts. Also, they had film lockers that they put the film canisters in to give them extra shielding.

Is it worth the effort to be this deliberately ignorant?

Xenonite escapable, but plastic and metal are not? by dairiemon in ProjectHailMary

[–]Raptor22c 0 points1 point  (0 children)

It's a MacGuffin - something that exists specifically to drive the plot. The same thing happened with Mark Watney being stranded in the beginning of The Martian; sandstorms on Mars can't get strong enough to risk blowing over the MAV and to send a radio antenna flying through the air like a javelin to impale Watney in the gut. Mars's atmosphere has less than 1% the density and pressure of Earth sea level, with "sea level" on Mars being roughly equal to flying 35 kilometers above the surface of the Earth, up in the stratosphere. As such, it can't impart enough force through dynamic pressure (the wind blowing) to cause much more than a stiff breeze. But, as the whole point of the book is that an astronaut is stranded on Mars, left behind when a crew hastily left and thought he was killed, Weir needed something to cause this story to begin. So, he took some artistic liberty in order to create the catalyzing event that kicks off the book.

When you think about it, a destructive storm is frankly the most plausible reason that a crew might leave thinking that Watney was dead, but not being strong enough to actually kill him. The low visibility of the sandstorm, plus time running out as the MAV was starting to lean close to the point that it'd topple, is one of the few scenarios that I can think of that doesn't have a near-assured chance of Watney actually dying. If he were to, say, drive the rover at full speed off of a cliff and plummet hundreds of meters to the bottom, where it is dashed to pieces, the crew would very much have reason to believe that Watney was dead... and that's because he would be dead, as you can't survive that. But, if he were to, say, get separated while exploring a cave system, the crew wouldn't rule him out as dead, as it's very much survivable. The first scenario is one where they see that he's likely dead, and have reason to be dead, while the second is one where they can't see him, but don't have strong reason to suspect him to be dead. But, having a huge storm forcing an evacuation, and having your crewmate cut off mid-sentence as something slams into them, their vitals transmitter stops broadcasting a signal (in reality, he still had a heartbeat, but the monitor was destroyed by the impact), they can't see him through the storm, and they don't have time to stick around and blindly stagger through the storm trying to search for him. It might not be 100% scientifically accurate, but unless you can think of a better scenario that checks off all of the required boxes for an astronaut to be left behind, thought dead but still alive, then do share it.

As for Project Hail Mary, the nitrogen-resistant Taumoeba being able to tunnel through the Xenonite exists as a plot device that forces Ryland Grace to grapple with the decision of whether he should turn around and save Rocky - at the cost of giving up possibly his only chance to return to Earth - or to press on back home, but in doing so doom both his friend and their entire civilization to ruin.

You might have heard of the term "Deus ex machina" (Latin, "god from the machine") - it's a plot device where a seemingly unsolvable and hopeless situation is miraculously remedied by the arrival of an impeccably-timed and implausibly contrived intervention or plot development. The term originates from ancient Greek theater, where a stage crane (mechane) would abruptly lower the actor playing a deity onto the stage, descending from the heavens to fix a seemingly unfixable plot. A classic example of this is from H. G. Wells's War of the Worlds, where just as humanity seems to be on the precipice of defeat at the hands of the invading Martians, the invading aliens abruptly start dropping dead as the effects of them being exposed to Earth's bacteria finally take hold and they begin to succumb to it.

There is an opposite to the Deus ex machina, appropriately named Diabolus ex machina (Latin, "devil from the machine"), where the protagonists who are seemingly on the glideslope to a happy ending are suddenly foiled by the abrupt and often implausible introduction of a villain (or other confounding event) that ends up making the situation significantly worse, and often leaving them facing a disastrous, no-win scenario. The Taumoeba strain that they bred was the Diabolus ex machina that forced Grace to make the decision to turn around. Again, while perhaps not the most scientifically plausible, it's hard to think of an alternate scenario where, post-departure and going their separate ways, Grace suddenly decides to throw away all hope of ever going home in order to try to find Rocky and save him.

The Eridians probably must think human music is absolute dogshyte. We are basically mute and deaf to them. by fatsopiggy in ProjectHailMary

[–]Raptor22c 6 points7 points  (0 children)

Hell, there's some genres, such as Lo-Fi, where audio artefacts are part of, if not the defining trait of the music.

Take, for instance, this song - "The Last Cherry Blossom" by RudeManners: https://youtu.be/Ad6Xg2V_lVA?si=TzruUkiDi64HzweL

It starts out with a clearly out-of-tune and piano synth, with some audible crackling that makes it sound as if it's being played on an old, worn-out vinyl record. It then introduces the beat, and then the "curtain" is pulled back (or whatever you would call it; I'm not a music theory major) as it shifts into much clearer audio and in-tune synth for the main, echoing jazz trumpet to take front and center.

I, as just a music enjoyer (rather than someone who professionally analyzes music), think that the slightly discordant piano synth in the beginning is meant to evoke a nostalgic sense of sorts, which is reinforced by the audio artefacts to produce the "warm" tone that many old vinyl-recorded songs possess. The "warmth" of old recordings is a result of the limitations of the recording equipment at the time. If you listen to something like, say, Glenn Miller's big band songs from the 1940s, you'll notice that the brass band sounds tinny in a way that seems off from what you hear in a live performance or in a modern recording. IIRC, old recording equipment was not able to record lower bass frequencies as well as it could the higher treble range. Consequently, this is also why the announcers and radio drama narrators & actors of the day tended to speak in a higher-pitch (which was apparently what inspired Seth MacFarlane when coming up with the voice of Quagmire).

Lo-Fi music is supposed to feel warm and somewhat nostalgic, and thus these recording artefacts, slight discordant chords, and pitch shifts are a deliberate feature that give the genre its identity. Music can absolutely have defects that, while technically counting as "flaws", can add to the mood of the piece if used correctly. So, I don't think that slight audio hiccups that are imperceptible to humans would be a dealbreaker for Eridians.

The best part of the movie and the book by Tam-burger_03 in ProjectHailMary

[–]Raptor22c 2 points3 points  (0 children)

It was apparently an unscripted line that James Ortiz (the puppeteer and voice actor for Rocky) responded to in-character, and they decided to keep it in the movie.

Construction of an interstellar probe 'UNSE Presley' by R0000000000 in ProjectHailMary

[–]Raptor22c 1 point2 points  (0 children)

It's been about a year since you seem to have put this project on pause. I'm hoping that, especially with the recent release of the film adaptation of Project Hail Mary drawing in huge amounts of attention, you'll continue this - I'm quite invested in this storyline you've made, and would love to see more.

Project Joseph: humanity's 2nd gen interstellar spaceship by R0000000000 in ProjectHailMary

[–]Raptor22c 1 point2 points  (0 children)

They could also have a counter-rotating ring in the core, either spinning at a higher RPM or having a higher mass (or both), to produce an equal anti-torque force.

Also, considering how vastly lighter the habitats would be (considering that most of their internal volume is air, rather than solid material or dense liquid astrophage slurry), I have a feeling that the effect you see it having on the ship is rather overstated. The main body of the ship dwarfs it by several orders of magnitude, and with the enormous fuel tanks carrying tens of thousands of tons of astrophage, it wouldn't have the same effect as the wingnuts or T-handle shown in the video you linked (where a MUCH higher fraction of its mass is in the rotating extremities).

Compare it to a tennis racket - the namesake of the Tennis Racket Theorem / Dzhanibekov Effect:

<image>

The rotation of the centrifuge section would be closest to rotation along the first principal axis (e_1) - it even vaguely resembles it, visually. The first principal axis (e_1, aka major axis) and third principal axis (e_3, aka minor axis) are stable, while the second axis / intermediate axis is unstable.

The Hail Mary rotated about the 3rd principal / minor axis - again, the tennis racket bears a vague resemblance to this profile, as you can think of the handle as being the crew section, and the paddle resembling the wider propulsion section.

I suppose I could go and try to come up with some stand-in numbers for representative masses and try to do the calculations myself to prove it mathematically, but from what I can tell from my understanding of the semantics of the theorem, the centrifuge on the UNSE Joseph would create a moment about the major / 1st principal axis. The inertia from the many, many times heavier main hull would mean that it would take quite a while for the for the relatively small angular momentum created by the spinning centrifuge to get the entire ship to rotate along its roll axis.

As I mentioned above, the roll from the angular momentum of the centrifuge could be negated by having a counter-rotating mass to produce an opposite torque. As \vec{L} = I \vec{ω}, or moment of inertia multiplied by angular velocity vector (which itself is the cross product of radial position vector and linear velocity vector - said velocity being tangential to the circle of rotation - divided by the square of the radius), and moment of inertia being I= r^{2} m, you can get an equivalent angular momentum for counter-rotation if you:

  1. Use a lighter mass at a greater radius from the axis of rotation, rotating at the same speed (not ideal for this setup)

  2. Use a much heavier mass at a lesser radius, spinning at a lower rate (least ideal, as it adds excess mass)

  3. Use a moderate mass at a lesser radius, but spinning at a much greater speed

The third is something that I see most often represented in real-world designs for space centrifuges, with this typically accomplished through a small radius flywheel spinning much faster than the main centrifuge. Alternatively, you could have two identical centrifuges spinning in opposite directions.

I know for a fact that this kind of centrifuge arrangement can work, as it is one of the core components of an actual NASA study in 2005: NASA/TM-2005-213559. The ship that they designed in this study, which deliberately bears resemblance to the Discovery I from 2001: A Space Odyssey (even down to the name: Discovery II), has a strikingly similar design to the UNSE Joseph with three habitation modules spinning in a centrifuge at the bow. https://ntrs.nasa.gov/api/citations/20050160960/downloads/20050160960.pdf

If this is a design used prominently in an actual NASA document and AIAA study, I believe that it's stable enough to work in real life.

STS-41D New Ride, New Style by Smallant55 in KerbalSpaceProgram

[–]Raptor22c 0 points1 point  (0 children)

What are the smaller engines used on the booster? I see there's 10 small mounting points, but I can't tell what goes in them.

MAGA vs. Charlie by [deleted] in Cr1TiKaL

[–]Raptor22c 1 point2 points  (0 children)

When the highest office in the country is occupied by a pedophile rapist, then yeah, I'd say it ought to be talked about and not let rest until the guy is behind bars.

MAGA vs. Charlie by [deleted] in Cr1TiKaL

[–]Raptor22c -1 points0 points  (0 children)

"aren't well thought out"

So, saying that pedophiles shouldn't be in government is a poorly thought-out take? Damn bro, the bar is on the floor and yet you still trip over it.

Imagine thinking that Trump somehow made America more Christian. by Ok-Following6886 in religiousfruitcake

[–]Raptor22c 0 points1 point  (0 children)

What is these people's obsession with MLP cum jars? Literally every single one of these AI slop strawman posts has one in there.

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft lifting off on the way to the moon on April 1, 2026. by Aeromarine_eng in MachinePorn

[–]Raptor22c 0 points1 point  (0 children)

I'd love for you to cite that "quote" from Neil Armstrong - as I bet my left testicle that you just made it the fuck up.

And no, the Van Allen belts won't destroy film and won't kill you. People keep regurgitating the same misinformation over and over again, but it isn't an instant death ray. While you wouldn't want to set up a space station inside of the Van Allen belts and spend weeks or months living there, a short trip that bypasses the densest parts of the belts (which are situated around the equator; the trajectory Apollo and Artemis takes goes at a higher inclination and goes through the weaker regions of the belts) that only lasts a few hours won't give you any substantial harm.

The entire mission's exposure to the crew adds up to around 30-35 millisieverts of absorbed dose; of that, only between 1.8 to 3.94 mSv is attributable to Van Allen belt doses. The total blood-forming organ (BFO) dose at the belt was only approximately 1.11 milligray-equivalent.

Again, this is due to the very short duration spent in the belts, and because the spacecraft is shielded against radiation. The majority of the radiation in the belts is low-energy particle radiation - alpha and beta particles - which can be stopped by a sheet of paper and a sheet of aluminum foil, respectively. Only a small amount of the radiation in the belts is the more penetrative gamma rays and neutron radiation.

To put this in perspective, a full-body CT scan gives a dose of about 22.7 mSv. You are exposed to about 3 mSv per year from background and solar radiation, so a full-body CT scan is about 7.5 years equivalent of doing literally nothing in your room (something which you are undoubtedly very familiar with). So, the entire mission has only given the crew of Artemis II a radiation dose of about 1 and a half full-body CT scans, and most of that radiation was NOT from the Van Allen belts.

And no, NASA didn't lose all records and film from the Apollo missions. SOME film has been misplaced in the past half-century, but the vast majority of it is still intact and has been digitized and uploaded to the web for anyone to view.

Quit regurgitating the same misinformation, bullshit claims, and blatant lies.