Comments by "Kevin Street" (@Kevin_Street) on "Scott Manley" channel.

  1. I'm getting the impression that fuel slosh has always been a problem for spacecraft. It's hard to get the fuel to behave in a predicable way when the velocity and gravity vectors keep changing.
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  2. That sounds about right, Blunt .Cabbage. I wonder what NASA could achieve if they actually had sufficient funding that didn't fluctuate with every budget.
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  3. Thanks for another awesome video! This seems like a good idea, or at least the render animation is really pretty. I hope all the modules will be that easy to catch and move around in real life. Having a private space station still orbiting the Earth after NASA decamps for the Moon is a definite plus.
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  4. That's unfortunate for Rocket Lab, but these things do happen. I hope they figure out what caused the failure and make sure it won't happen again. Thank you Scott Manley for this informative and very timely video!
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  5. Thank you so much for making these wonderful videos! You truly are a treasure Scott Manley. And you taught me something new today! Never heard of a pulsed pair production instability supernova before.
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  6. Neal Stephenson has a spacecraft like this in his novel Seveneves. In the book there are lots of little spacecraft called "arklets." When two of them are joined by a tether and spun around their center of mass they form a "bolo" with simulated gravity. Tethers and spinning are a very interesting idea that could have wide application in the real world.
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  7. Maybe they should keep three of the most historic engines and install them in a space shuttle that goes in a museum somewhere. It's good to keep something like that for the historical record. But on the whole I'm okay with this. Rockets are meant to fly, and while it's always good to keep examples of the most historic and important machines I think the best use for most of them is to keep going until they can't fly any more, then they can go out with a Viking funeral as they burn up in the atmosphere. If being used up on the SLS is the only way these engines can continue to fly, then that's the way they should be used.
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  8. This may be a joke, but it has the ring of truth to it.
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  9. Thank you for this video! That explanation is really interesting.
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  10. Don't think they have that much spare time. You can watch a movie while exercising, but you can't really do that with a video game.
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  11. Thank you for the very informative video! I hope the coolant leak isn't a serious problem.
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  12. Thanks for another great video, Scott! I'm not American, so I'll try to keep politics out of this comment. My understanding is that Artemis had the goal of landing on the Moon by 2024 specifically because Trump wanted that to be an accomplishment of his second term. So far as I know Biden doesn't have the same kind of goals, so his Administration will probably take a more technocratic, less personally motivated approach to NASA. The result of this will be much less pressure to get Artemis done quickly. Combine that with the Congressional budget shenanigans you detailed in your video, and we get a recipe for slow progress that's more like previous Administrations. Hopefully they'll keep a hard deadline like 2026, but without a political motive in the background driving everything forward I suspect Artemis will get slower and slower and that deadline will move further and further into the future.
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  13. This is an awesome video! Really interesting fuel for the imagination there with all the alternate space shuttles. Just for sheer coolness divided by danger, I really like the one with the giant coin, or maybe the seventy-six passenger shuttle! Love to see how an abort system would work with that last one.
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  14. We know a couple of ways it could look, but there are almost certainly other possibilities just as correct.
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  15. Thank you for another great video. But I'm a bit in the dark with this one, as quaternions are a completely new idea for me. Looks like it's going to take some outside learnin' to understand properly.
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  16. And astronomy, and nuclear physics...
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  17. Thanks for another awesome video! I get the logic behind it, but it's hard for me not to feel a quick stab of claustrophobia while watching those women climb into the suits. In zero or low G it'll probably be easier to get in and out of them, but I think some part of me would always wonder how I was going to get out again after descending into such a close fitting environment.
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  18. Unfortunately it could happen anywhere. We don't even know that the thief was Spanish.
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  19. Of course they have ICBMs. What did I say that implied otherwise?
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  20. I don't think they'd want to create an actual landing surface out of aluminum oxide. The idea is probably just to glue the regolith together so it doesn't explode outwards under the lander. Sort of a rough and ready landing pad that's made of glued together rocks and dust.
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  21. Thank you for another excellent update.
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  22. That's a great way to put it!
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  23. Wow, that was really interesting! Thanks to this video, today I learned that North Korea and Iran have legit space programs - which is to say they're now building their own rockets and have used them to launch satellites. No doubt the main reason they've spent so much money and effort is military, but they have attempted at least some peaceful applications too. And there's a real Iranian American astronaut who's done a lot for space exploration!
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  24. Thank you for another really interesting video! TRIGA is a very intriguing approach to the problem of moderating nuclear reactions.
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  25. This is such a 21st century thing. :-)
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  26. Thanks for another great video, Scott! Early 2023 sounds about right for Starliner, sadly.
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  27. Thank you for another excellent video, and good luck to Virgin Orbit. It'd be great to have two successful launches from different companies in the same week. One is a lot more significant than the other, but still two successful launches.
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  28. This is a really unfortunate development. I hope they can repair Arecibo as soon as possible. The reflector dish should be easy enough to fix, since it's simple in structure and right on the ground. But the Gregorian Dome and its catwalk might be quite a bit more challenging. Hopefully the Dome wasn't damaged too badly.
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  29. Thank you for this wonderful video! I didn't get to see the flight, so your summary is greatly appreciated.
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  30. There's lots of scary stuff in the current era, but this is the 21st century that I love: a private company develops a revolutionary new spaceship. Lots of people (including the wunderkind owner of the company) take pictures of that spaceship and post them online for everyone to see. Then popular space videologgers create simulations of that spaceship which they then fly virtually (and even drunkenly) to test for stability. This is how the system should always work!
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  31. We've got the original game to play, so there's no rush on the user side.
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  32. What a fascinating history. Thank you for this video!
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  33. Thanks for putting out this video! It's certainly an interesting result that should be further investigated.
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  34. Thanks for another great video!
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  35. That's really good, Xepher!
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  36. Thanks for another great video! Who would have thought that bubbles in the fuel could be such a problem? Not me. But then Starship is the first rocket to do fancy maneuvers while in the atmosphere, so it makes sense that it would encounter unique problems.
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  37. It was? Cool! Then the Soviets must have been the first. Seems like quite an achievement for the 1980's.
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  38. Thanks for another interesting video! Guess we'll have to see what happens.
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  39. Agreed, Chase. Boosters that can be re-used is a huge advance.
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  40. A picture of the eclipse's effect on the Earth, taken from the Moon! So cool.
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  41. Very cool! Thanks for another awesome video.
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  42. If you want to fly safe, I recommend staying away from the F104 Starfighter. Not sure I'd trust a payload with one of those things. But back on topic, thank you for another wonderful video! This is a really interesting history of air launched rockets.
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  43. It's the pleasure of fine engineering - watching complex systems do amazing things.
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  44. If they're ready to launch and hit that 2024 date then I take it all back.
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  45. Thanks for another wonderful video!!! We really don't deserve you, but it's so great to listen to you explain these things.
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  46. The important part is the rover can handle a wide range of terrain and it's heavy enough not to flip. (Especially at those speeds.) Slow and steady and safe is the way to go when you're 383 400 kilometers from the nearest mechanic.
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  47. I do this too.
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  48. Based on nothing but watching your videos, I'm certain that SpaceX (and probably Boeing) are going to be successful in their ambitions. They're still in the early part of the experience graph where progress is halting and slow, but soon that line will shoot up when they start locking in achievements. And before you know it those artistic renders will come true.
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  49. "...it moves up and down because the Earth has an axial tilt and we are seeing the seasons here..." (*.*) Am I the only one here blown away by actually seeing axial tilt??? I've been imagining it since kindergarten but to actually see it in animated photos is something else.
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  50. Thank you for this video! It was really interesting.
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