How does SpaceX’s Dragon get back to Earth from Orbit? How exactly it re-enters and lands!
ฝัง
- เผยแพร่เมื่อ 3 มิ.ย. 2024
- How do you actually get back from orbit? Do you just pump the brakes and fall right out of space? Well, there’s a lot of fun physics involved in deorbiting and today we’ll do a summary of how you deorbit, go over the hardware that allows the Crew Dragon Capsule to reenter and safely splash down, we’ll go over the sequence of events and even the exact conditions that need to be met in order to allow for a safe reentry.
Timestamps:
00:00 - Intro
03:10 - Re-Entry Criteria
05:30 - Crew Dragon Re-Entry Timeline
12:35 - Hardware Overview
25:10 - Orbital Mechanics Rundown
29:30 - Summary
Article Version (Written by Alex Crouch)
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Timestamps:
00:00 - Intro
03:10 - Re-Entry Criteria
05:30 - Crew Dragon Re-Entry Timeline
12:35 - Hardware Overview
25:10 - Orbital Mechanics Rundown
29:30 - Summary
Legend
It’s in the video description but okay...
@@peterwmdavis yep it totally is but I'm watching on mobile like the majority of viewers and description timestamps don't work on mobile 😉
@@xtojump they do? What are you watching on
Patrick Mac Cann - Communication visuelle, web-design et photo It works perfectly well for me using TH-cam app on mobile. You can always click to see the description
When he said he'd make a video for today I thought just a 7 minute explanation not a 30 MINUTE BREAKDOWN!!!! I LOVE YOU TIM
It's Tim 😂 go big or go home.
@@vanillaswirl87 you're not wrong
Honestly, what did you expect? It's Tim. 30 min is the shrotest he can do
It’s tim he doesn’t do short
I didn't realize that the video was about 30 minutes long till I read your comment.
I know how much stress you are in Tim, you are practically doing a triathlon (forget marathon. Tim is definitely doing much more than that, for a longer period of time) between the live streams, launches, static fires, OLD and the execution of this video.
well done Tim! thanks for all of your hard work!
Stress my dude is a killer
@@joeyknight8272 Stress is a funny thing though, it's not just about how much you are doing. I think Tim's at the top of his game right now and it probably feels pretty invigorating. He's probably pretty exhausted though. Before long he will need to treat himself to a nice holiday or the pressure of sustaining this output will turn into stress and become a problem.
I'm just surprised he wasn't in one of those boats loitering around the landing site. LOL
Where's this man's Patreon??
@@barakathiongo4835 linked in the description :)
"Bob & Doug", sounds like a burger space corp.
Lmao 🤣
It does
They should name the food place near starship Bob & Doug.
There's a pretty hilarious movie from the 80s called Strange Brew . It's main characters are named Bob and Doug. Every time I hear their names I think of that move lol.
@@goose32373 That's it. I remember now. I knew this name combination wasn't strange to me.
3:57 Tim, 25 dBz refers to the intensity of the reflection in the Doppler radar. It's a logarithmic scale that represents the volume of precipitation per volume of air.
Not Dragon Ball Z Episode 25?
@@ilyaholt8607 it logs rhythm with a volume scale on his radar
I was pretty sure he knew that but was just wondering what the "z" refers to. Anybody know?
@@IDoNotLikeHandlesOnYT It really just distinguishes this use of "dB" against other uses of "dB".
@@rogerwalker8764 can't tell if this is legit or broscience
I deeply appreciate the technical depth of your videos. I am a science geek and I am starved for this information. Thank you so much.
same here
Yeah.. the amount of research he is doing for all these vedios are fantastic
Same
I live in Pensacola and we're pretty excited that they'll be splashing down on our side of the state and in our "backyard" ❤
Wow! Im super exited for you guys, have a good one!
I can already tell this comment will get a crap ton of likes
Yeah, I lived in Pensacola for a year as a Latter-day Saint missionary. Y'all have some beautiful beaches, especially over towards Navarre.
Lucky
@@middletnpyro I thought it was closer to Foley. Hm. Cool anyway that it's in the neighborhood. I went to Mobile a couple times too.
I like how your globe changes depending on what you are talking about
When you talked about the mars rovers it was mars
And now its earth :)
Morten Vajhøj srsly? I never notice xD
It’s a great little Easter egg
It's called a Mova Globe and they're pretty awesome :)
It even faces with the landing site to the camera
They spin, it looks really cool
I have been watching your vids for 2 years you have helped me through a lot
Omg
I like one of the funny ksp loading screen messages where it says, “Calling orbital mechanic” 😂
I've always loved the "simplicity" of slightly-off-center capsule reentry, where the vehicle remains naturally stable and only roll control is available, yet that roll control has a surprising amount of authority by pointing the lift vector anywhere around the full 360. Thinking about reaching a precise splashdown point, though, I'm curious just how much capability they have to affect cross-range and track-length.
Knowing SpaceX it's probably pretty good, I expect the Parachutes present the most accuracy error, simply by there nature
Here's the actually tricky part, you can't just let it 'go forward', there will always be lift (which is 'lift' in that it imparts a force perpendicular to the drag) due to the off-center nature of the center of mass. So if you were actually on point, you'd have to do some weird little loop to swoop back to your current trajectory. They must have a default orbital trajectory including incidental lift and then make small adjustments to that profile as conditions require.
I can really recommend the Scott Manley video Tim referred to at the beginning.
I suspect that the overlap between Tim's viewers and Scott's viewers is massive! :)
Thanks Scott.
So much that you can't link it?
@@stonefish98 Not in a youtube comment
Dude hopefully im earlier enough for you to see my comment, i just wanted to say i love your videos!!!! Thank you so much man!!!! 🌎🔥❤
Well he does see your comment
Based on the wikipedia article "dBZ (meteorology)" 25dBZ equates to 1.3mm/h of rain.
This video helped answered and explained my questions involved with all the orbital mechanics. Thanks Tim !
I have just found my new favourite You Tube channel, you are a star! I thought, THOUGHT, that I was quite knowledgeable but after spending the entire day over here in the UK watching back to back Tim Dodd videos I realised that I actually knew very little. You are an excellent, amusing and very informative educator Tim. I never, ever watch videos that are longer than about three minutes, until today that was, I've not even used the time stamps once. Superb.
Tim, this was excellent--could be used as an intro at the college level. An ideal mix of science, engineering and enthusiasm!
You got it up before the reentry. With only 5 hours to spare
I was honestly surprised when I learned that they're de-orbiting using the tiny Draco RCS thrusters, instead of the huge Super-Draco motors.
Especially since now that they're splashing down, the only thing they have the Super-Draco's doing is abort contingencies.
That said, I do appreciate your explanation on the "why" of that answer - it makes sense!
They totally should use super Draco for splash down/ landing softening like on soyuz
@nuff sed In fairness, the way they designed the system both the RCS Draco and the massive SuperDraco use the same fuel reserve.
So I gotta commend them for that.
But still the weight of the engines themselves counts - although it ALSO counts in the competing designs which also use large abort motors that are carried into orbit.
So they went from "really cool idea" to "just like everyone else", which is still a bit of a shame.
truly astonishing and comprehensive description, well done, and thanks to your patreon supporters too!
How to get down from orbit:
throw a dice...
...check for dice roll after landing under the seat
because of the nessesarity for gravity and being stationary to complete.
Then proceed with disregarding the result.
Don't forget Tremor, the space dinosaur ;) Seriously though, praying Bob and Doug get back down to earth, and home to their families, safely and happily!!!!
LOVE your Channel thanks for this amazing content.
Great video, Tim! You answered the questions I had about Dragon 2’s thrusters. Thanks!
Hey Tim, great job as always, also saw your live stream of the DM2 landing. Well done!
Love rockets, almost as much as i love this channel
Same
Same. I LOVE ROCKETS! USA 🇺🇸
Awww 🥰
1. Click Retrograde
2. Press Z
3. Press Spacebar
4. Wait
But why aren't you thrusters already on??
Great job getting this out on time!
1:06 that amazing shot Tim on the left, falcon 9 with crew dragon making history in the middle. and a Tesla on the right. one picture carrying some great stuff
First time here Tim and I need to say that I loved your video. You have a new subscriber. Great Job!
is that their names dragon riders i wanna be called a dragon rider
Dragon riding astronauts or Dragonauts!
@Yai Garcia but being a dragon rider sounds so awesome!
Dragon rider is Donkey from Shrek
The capsule was ORIGINALLY called Dragon Rider
@@crugleberryandfriends4740 I didn't know that. Thanks for the nugget of info.
Point retrograde, fire engines, open parachutes at 3000 and there you go xD
i see your a man of culture as well
@@leriku2270 indeed I am
@@avap0n459 The space capsule equivalent of "pulling at the mastheads"... Nice.
That was right and wrong
Don't forget to eva in the air
Thank you I was having trouble landing my Capsule on my backyard pool.Appreciate the help!
You definately deserve more views on this video. This is an awesome explanation of something that people don't really think about, and my opinion is that you've done an awesome job. I really love these kinds of videos.
Oh boi,my man is safe.
🥰
I missed this in my sub feed, glad you mentioned it in the splashdown stream!
This channel has been an awesome find for a space nut like me. I love how you break down all the concepts in a simple, easy to understand way. Big up?
"Dragonriders" ... I like that! You should @ Elon, asking him to make a custom patch for all astronauts who will ride on Crew Dragon, a patch that proudly declare "Dragonriders"...
I live in portugal, and as of about an hour ago the crew dragon passed over me, i actually got just a frame of crew dragon during THE DAY using my nikon p1000
Wow that's cool! I would love to see that picture (you could post it to reddit ;-)
I would love to see that picture
Ill maybe post it on r/spacex
@@kerbal_madness do that! You'll get my upvote! :)
Thanks!
Although i knew all the orbital mechanics watching your and scott Manley's video over the past 1 and 1/2 year ,i still watched this video till end because space is fun and watching the same thing over and over isn't boring.thanks for this video
So much info in your video I can't wrap my head around it.. Thank you for all your work
It thought this was an old live stream based off of the thumbnail, I didn't realise it was a video till I checked twitter
Aliens in UFOs are watching this an chuckling to themselves: "Ah, nothing like watching Newbies."
So glad you added the small triangle thing next to the timeline, it makes it so much easier to follow
Thank you Tim, loved every bit of it. I had a few questions which were answered beautifully. However I'd love to have Scott's videos linked here, going to manually search for them now.
Why don't they catch Dragon with a ship like Ms.Tree or Ms.Chief?
Maybe the ship can't move fast enough to be at the right spot in the right time (that still can't catch fairings every time, and Dragon would have to land at most a few meters from the center to not make the ship roll), maybe the vertical speed is too high and Dragon would break the net, maybe it would be just too much work to certificate this... idk
first
(=
GAY
Great job Tim!! Very informative and really makes the de-orbit process easier to understand.
Well done Tim. Great video! I'm primed for the splashdown now.
Great program Tim, perfectly explaining everything relating to Re-entry. I feel as if I am now a semi-expert. Great work and thanks. Hope you can do many, many more such programs. Cheers, Brian
I just wanna say that I love aviation and your channel got me into space as well
Can’t get enough of Tim’s space-explanation videos. Love it! Go on !
Love the new studio Tim! Video’s awesome too :D can’t wait for SN5 hop
Looking back at this is wild...you will know Exactly what this feels like Tim. Awesome.
I learned alot from your video. Especially regarding orbital mechanics. Thank you and enjoy the slash down.
Thank u for the video!!! I was wondering why the time it takes to land can vary so much and why they arent landing using the super dracos instead of splashing down- so this video really helped answer the questions I had about it -Can’t wait for the stream later
Great informative content in a very accessible format. Keep up the good work. Love your channel!
Your videos are next level, such high quality & incredibly informative! Thanks 👏👏👏👏
Excellent tim thought it would be a short video great job
My first job at Douglas MSSD involved re-entry dynamics and orbital mechanics. The math was really challenging, and very fun.
Awsome explanation Tim, love your content
Thanks for the return to making videos again Tim!!
When the scrubbed SN5 hop attempts have almost 10x the views of this super cool video :(
I mean, I'm super exited for the SN5 hop, but this video is pure gold of work !
While I had most of that process in my head, you definitely put it together! Thanks Tim :)
I have seen every single one of your videos from the start
Love from Greece!
Ive always wondered how this works, nice presentation!!
Love your work Tim! My favorite channel btw
Great work, enjoying every minute. You are one of my examples as a prof tuber too!
Nice work as always Tim.
Thanks for the awesome information! As always your videos are high quality content!!!
This video is awesome, great work Tim!
I recall reading that the Apollo capsule had it’s capsule angle shape because had it had been any taller, heat during reentry would have burned the upper half because of entry airflow.
absolutely astonishing :) great video , I'm learning a lot.
Very well made video, my compliments!
Thank you for all your efforts in popularising Space science.
Regards,
I love your videos, as your passion for space flight is revealed throughout. Excellent research and educational presentation.
Great video Tim, very informative.
When I thought it couldn't get more exciting, Tim as always made it a hundred times more exciting!! Love attention to details✨
Straight up inspiring AMAZING content per usual! Thanks Tim can't tell you how much all your hard work is appreciated 👍
Awesome video as always Tim 👍🏻
Totally astonishing! Loving your work, thanks for the explanations you do a great job👍
Another really great video, Tim! The only thing I'd like to have seen more of was how exactly the phasing burns affect the orbit, but I also get that it's a bit more detail than the scope of this video. Maybe an idea for its own video, or as part of one about interesting orbital mechanics.
Tim, you have become a must need for any inexperienced scientific person who loved space travel! Thanks !!
Outstanding breakdown 👏 answers to many of my questions
This presentation was pure "space- tech" candy to me. Good stuff.
Well done sir! Great new video.
thanks for all the information, makes things much easier to understand
Way to break it down. Very cool video! Strong work.
Very good explanation. I subscribed. Happy T-day, by the way!
Wow! awesome video, exactly what I wanted to now. Tim you rock!
Excellent production and subject matter thank you
"Theres also an article version of this video"
My boy, it just got real. Always. Always make a written overview of your videos. With the time you spend on them, it will be verrrry beneficial to you in the future as you reference back, and leave us super nerds to find the info ourselves :)
One of your best videos to date! Great info there.
Very informative! Keep up the good work!
Super awesome informative video. You're the best.
Maybe your best video yet. Thanks Tim!
Thanks for the video Tim, everytime I learn something from them
Excellent! I learned a lot and also you presented in a fun way. Thanks
This is brilliant guys! So realistic. Look forward to seeing more
Released just in time, you guys are ambitious!
Good video Tim. I learned a lot!
Great content as always. Hello from Minneapolis!