This Chinese Startup Just Landed a Rocket Vertically
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- Опубліковано 3 чер 2024
- In this episode, we do a deep dive into the recent successful vertical landing of a rocket first stage from iSpace, the first of a kind in China. While this was a low altitude demonstrator (max altitude approx. 180 meters), it highlights the increasing knowledge of Chinese space companies in their question for rocket reusability.
This episode discusses what this success means for the Chinese space industry, how iSpace compares to domestic competitors, and the challenges they will face moving forward.
If you like what you see and would like to support me, please consider joining our small Patreon community at / dongfanghour !
We also have some very cool space merch available at shop.dongfanghour.com .
00:00 Who is iSpace?
00:40 Hyperbola-2Y Vertical Take-off Vertical Landing
01:15 Comparison with other Chinese recovery developments
01:34 The Hyperbola-2 rocket in detail
02:53 Challenges of the Hyperbola-2
03:35 The role played by the Chinese Starlink (Guowang)
5:14 Challenges iSpace is facing
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Credits for various visuals: iSpace, Landspace, Linkspace, Deep Blue Aerospace, Orienspace, Galactic Energy, SpaceX - Наука та технологія
Some comments are pointing out a couple mispronunciations in the video (and some are a bit rude). please note that I am French and that English is not my native language 😅
Mate, your command of the English language is way better than that of many Americans.
👍 🇦🇺
Seriously!? English is your second language?? Omg, you speak English better than most Americans! Near perfect American accent!
China trying to copy spacex. Wow amazing…. 😂 can’t even come up with a different name
Wow your accent/pronunciation when speaking English is excellent. Ignore the rude people. The internet is an amplifier bringing out the best and worst in people.
Some people have a sad existance where they go around picking holes in other peoples work, personaly I think it is a blattant form of bullying, do not give them the satisfaction of aknowledgement and just ignore them, in my opinion you put together a very good piece which was well orrated, I look forward to your next article.
It's funny we don't get many UA-cam channels covering China's space industry which is the one of the most if not the most active space industry in the world. Glad Dongfang Hour is doing it. I'll subscribe now.
Thanks for the kind words @eddymich, and welcome to the channel!
That OC is laughably false. Please come back to reality.
Yeah be careful. China do not like media attention.
Yes. You can see what Space X did 3 years ago.
LOL
my guy has *never* heard of SpaceX
Truly impressive video and commentary. We demand more such a high quality production like this. Bravo
YES! SPACE RACE 2.0 HERE WE GO!
The race to the Mars!
Unless something changes, this is not a race, it is a leader (SpaceX) and a follower (iSpace). SpaceX is about 10 years ahead at this point, maybe more.
Wow. Glad to know that there are many companies trying to compete in a space race out there. In that case, achieving milestones are much faster and easier than ever before. ❤
Yeh China clearly stole the tech from SpaceX.
China does it to terrorize and threaten to seize other countries' territory. Seizes the waters of many countries.
Rocket originated in South Korea
@@kingaron6341 Oh, because South Korea has rockets that land themselves or because SpaceX is the only entity in the world capable of self landing rockets?
@@johndoe8785 Chinese copy all their technology nothing original. 🇨🇳
It's exciting to witness the rapid growth of the space industry. It's challenging to keep up with the numerous companies and rockets, but I believe that the collective knowledge and healthy competition will accelerate progress. Hopefully, we'll see incredible milestones like a moon base and a Mars base within our relatively short human lifespans.
How can you be that unsuspicious? In the 60s and 70s, these countries were sending human beins on the moon. 50 years later, they show you CGI images, like here, and you applaud ? Come on, wake up !
It's CGI.
@@jesus4400 Source?
@@woxoom In this video, look into it !
Real growth is when the Common man need to make it atleast need to use it, then only we can accept that is growth! Unless they all comes under defense or growth for monopolies ! Monopolies never live for the people/nations growth 🎈
Great coverage, as always. Thanks! 👍👍
We receive the events (launches, achievements) of the Chinese space industry one-by-one, but your video place these in context, showing the trends, how they are connected, which is very much valuable, and unique.
Thanks for the kind words @jeechun!
Rational and objective analysis: At present, the only country with the most powerful aerospace technology in the world is the United States🇺🇸China🇨🇳! These two countries are competitors! But America 🇺🇸 is very unaccustomed to anxiety! Use various means to suppress and slander China! I hope China and the United States will have peaceful and clean competition!
@dongfanghour covering Chinese space flight is awesome! I always wonder what's going with the starship/ falcon clone and this is exactly what I was looking for! Thanks man!
great work with a lot of in-depth analysis.
Nice video and really cool to see the progress 👍
All politics aside humanity will need every chance it can take to break out into space if we are to survive past Earth, so the more people working on this the merrier. Congrats Chinese space team. Wishing you safety and success.
All politics aside, humanity will need the USA to stop funding Billions in war and stop killing millions civilians around the world, if US government spend this money on their infrastructures and homeless people it's better for all humanity.
I see it as Humanity destroying the atmosphere, killing the Earth in it's quest to conquer space.
@@cohutta_pines A single falcon 9 launch emits about as much CO2 as 7 continental airline flights. So in the grand scheme of things, it's nothing. Chill.
Thats 7 continental flights worth that someone will have to pay to remove if at all possible . The safe level is 370ppm ..look up the latest and its accelerating rise because of all `the little bits `adding up to a huge bit .@@trevarigoldstein9917
Humanity, like all children, must eventually leave their mother and explore the universe !
Marvellous and very impressive. No doubt. Great work.
It true, they are now on par with Hopper from the Falcon family of rockets. There's still a lot of work to do before landing an orbital boost stage, but this is an important step.
Only if you believe their propaganda.... Do you remember a huge buzz few years ago about a "stealth" fighter? And where is it? Well, it has never been made. They don't have adequate brain for such things
This is just an experimental product, and it is still far from the commercial stage of Falcon. Chinese commercial companies still have a long way to go, but this is indeed an important step.
Although it's had only short hops so far this rocket looks more like New Shepard. I think if they wanted to fit more sophisticated legs on it, it can easily replicate the New Shepard flights. That would also give them a chance to try out the grid fins.
Great job… love your content and channel 👍👍👍
Thanks for the new video, detailed and up-to-date as always ❤❤❤
Wow! Haven’t herd a peep of this anywhere before this video. Thanks for sharing.
been waiting for this episode to drop!
😄
Competition? Good! Tends to keep things fresh and energetic, leaves no room for complacency!
Interesting, well produced video! New sub!
Great summary of the state of Chinese reusable and commercial rockets Jean.
Future will be really interesting with all these innovations. Way to go. All the best to all those competing Chinese companies.
Lots of info, thanks
good work! thanx dude
Good info and presentation video
I can see this as a competitor to New Shepard, and more than that - it looks like it has the same height but a larger diameter. But going straight up won't get a second stage and payload to orbit, especially a 1.9t one. I can believe this rocket can get a second stage and a small payload to orbit but recovery is a different story - F9 is traveling at 6600 kph horizontally when it starts reentry. That's the hard part. It also has to carry propellant reserves for a reentry burn to slow down to a manageable speed. That cuts into the payload even more.
That was the first stage I think not the whole rocket
great work
Good and authentic insights on Chinese space industry
Perhaps they could use a modified model in place of standard stage one boosters.
I remember that Chinas launches start very far inland because of contention with Japan over launching over the Sea of Japan; resulting in regular losses of boosters, fuel tanks, decouplers, ect. on private properties; as well as occasional destruction of said properties.
The can build several launchpads to the east and west for controlled landings of stage one boosters; saving the reusable rockets and keeping citizens safe in the process.
其实是因为怕美国攻击，所以几十年前把火箭发射基地放在内陆，现在的主要发射场是海南文昌
keep up the awesome work bringing hard to find news to us.
Hoping that iSpace can survive and grow... having followed SpaceX from Falcon 1 launches, I can agree, Space is HARD! Good luck China and iSpace.
Its super easy when you blatantly place spies inside spacex and steal all of their designs....its like they aren't even trying to hide it
Very interesting! I will check out more
Wonderfully produced!!!!
Great analysis and presentation. The key piece of iSpace technology is it's deep throttling methlox motor. Very few methlox motors have flown to orbit, or have been demonstarted hover/landing testing tests to date. Methlox is the future. I view iSpace kind of like RocketLab, which is also pivoting from smallest market to medium lift reusable boosters. Hyperbola-2 is akin to an Electron, and Hyperbola-3 will be akin to Neutorn. In this regard, iSpace is ahead of RocketLab in they're flight testing a methlox motor.
Larger boosters can still launch smallsats, so being able to launch a reusable boosters provides an opportunity to leapfrog all competition.
Reusability is what greatly lowers cost of delivering mass to orbit along with the ability to scale launch cadence an order of magnitude. iSpace is very well positioned technology wise, and it will be exciting to see their next achievements.
SpaceX's Starship uses methalox Raptor engines - I think these are also throttled.
@@maxhugen Starship has demonstrated liftoff and landing successfully (once) but SpaceX has not made any successful methalox launches into orbit or even flown methalox engines past the Karman Limit (100km altitude from sea level). SpaceX doesn't seem to have issues with reusing the kerolox Merlin engines in the recoverable Falcon 9 first stages.
Two major differences between RocketLab and iSpace, the main one being that RocketLab have a steady income stream and are also gaining inflight data.
Also RocketLab have their own inhouse Satellite capabilities, actively making money.
The only problem with Methane/Liquid Oxygen is the CO2 it produces (CH4 + O2). Hydrogen/LOX is much more environment-friendly.
@@rattywoof5259 Sure, hydrogen is more eco-friendly, but as you probably know, it's incredibly difficult to work with. Storage, pipes, valves etc etc are all prone to leakage without meticulous construction and maintenance.
Your English is better than my French (I grew up in Montreal). I could not tell that your native language was French instead of English. I also speak Chinese but I was unaware that English and Chinese were two different languages because everybody around me spoke both fluently and interchangably. I only discovered that Chinese was different from English in elementary school when I started discovering that some of my classmates only understood part of what I was saying (they only understood the English part) and it still took me a while to find out which words they didn't understand since Chinese has a similar grammatical structure to English except for the plural forms.
That's interesting - Im British living in Bulgaria and I dont see Bulgarian as a different language, its just different worlds in English. I use them both in sentences and I can do maths in my head in both in the same equation. My brain simply does NOT separate them. They are all in the one big bag of words - BUT Bulgarian is very different in structure so even though I know maybe 2 to 3,000 words I am very bad as I can not structure the sentence except in the English way.
Im trying to learn to read Chinese cos obviously you dont have to be able to speak Chinese to be able to read it - I know this is鱼 fish and this is 钓鱼 Go fishing but I have no idea the Chinese words. I find this universal language fascinating
中国人完全不觉得英语语法和中文类似………………感觉很难，比如单数、复数，还有时态等等
@@xiaoxiao792 OK - I managed some of that without google - middle country people all no - after that I got lost and had to use Google.
"Chinese people don’t feel that English grammar is similar to Chinese at all... it seems difficult, such as singular, plural, tense, etc." The good thing about English speakers is we are used to hearing every nationality in the world try to speak English - so you only have to be close and we will understand you.
If you say "wanted I cookies six" you will get six cookies when it should be "I would like six cookies please"
You should try Bulgarian - if you change one word at the end it changes all the other words in the sentence, so you have to know how it will end before you can start it.
Well done! A great video
Congratulations on the successful test 🎉🎉
Thank you. 🌹
Would have thought that the launching pad would be away from the nearby infrastructure just in case of a crash; which would ultimately cause the nearby infrastructure to be damaged as well. But maybe the scientist are confident that would not happen.
If you take a look at the Kennedy Space Center launch pads on Google Maps using satellite view you'll see those launch pads have infrastructure surprisingly close.
It's a small scale testing pad. And those are just sheds.
@@VarietyGamerChannel Ahhh ... that makes sense ... Thanks
Test site is in the desert out in the middle of nowhere.
No. They just don't care.
man , you are so professional
another great video 👍
Impressive, and important news. Space IS hard, as they will likely find upon scaling up to heavy lift. If they get to the point of doing the very large shuttles originally conceived for the us Space Shuttle program (heavy lift to geosynchronous orbit), that will be concerning.
Lol they already have full spectrum geo synchronous space surveillance capabilities, their own GPS , BEIDOU😂😂
They're 40 years behind, and always will be.
@@JohnWarner-lu8rq ,lol keep dreaming and thinking they will always be behind, history is not kind to people who get complacent. If they are so behind why aggressive sanctions on chips, the hegemon is fearing his hegemony is coming to an end.
@@JohnWarner-lu8rqamerimutt feeling insecure? Why else would you mass reply to every comment chain 😂😂😂
@@NeostormXLMAX Mass reply? Every comment chain? Seek help.
Good wishes for continued success and dedication of your teams.
Finally! It's been a decade since I was amazed by Grasshopper and perplexed by lack of competition. Better late than never.
It took them that long to steal the technology.
Thanks for sharing 😊
If the information is correct and entire test was successful on all aspects, good for China and scientific community.
well it's the scientific community of the West that did all of it and china, as ususal just copied. And now, it will be used 100% for military npurposes... but let's pretend the world gained something...
Watch out amerimutt seething incoming 😂😂😂
This is CGI
Cool.
I think it is really cool that some of these rocket builds look really similar to things I used to build in Kerbal Space Program!!! 😂
Your audio sounds great, what microphone are you using?
The Shure SM58 🙂 I’ve been using it for 5 years now, I’d definitely recommend it
Appreciate the video! China is doing some interesting things in this area and few are talking about it.
The west has heard very little from the west's MSM about the Tiangong space station. One can assume there will be very little about this.
Anyway, well done. Successful test and with a new viable fuel.
The Chinese like to do it first and then publicize it after making it, which is different from India
@@Aapigtoxic
Building structures right next to landing site?
this is incredibly cool
Can you give us more information on iSpace's Methalox engine, such as what cycle it uses?
Sure thing. It's a gas generator cycle, produces 15 tons of thrust (vac), and has an ISP of 355s (vac). These are the values on their official specs.
@@DongfangHour Very interesting, Thanks! So its the same cycle as Spacex's Merlin engine. A good start. Learning to apply Methalox over the various cycles, such as GasGen, Staged Oxygen rich, and now Staged Full flow is very good for the rocket industry!.
Don't go to Chiina!
Foreigners will be put in jail if you say
Taiwan passport or Taiwan president,
2:33 It takes some balls to rip off the Falcon Heavy even after SpaceX proved it's not commercially viable
they actually got balls ngl
Nice, that's super hard stuff.
Wow, hardly any smoke. That's the main thing I noticed.
Its liquid propellant. So no smoke
Can parachutes be used to lower the rocket to enable rocket re-usability?
NO. if use parachutes the rocket most likely land on it side potentially cause damage to the rocket
Not for large liquid fuel rockets. Parachutes get less effective as things get bigger, and liquid fuel rockets are too fragile to survive higher landing speeds.
The Space Shuttle solid fuel boosters for example landed at about 90km/h, but they were basically solid steel tubes so they could handle that.
RocketLab are also able to land their liquid fuel Electron booster intact with parachutes, but it is tiny (About 1 tonne, vs the 80 tonnes of the Shuttle boosters).
i-Space's Hyperbola-3 rocket is much closer to Falcon 9 in size, so propulsive landing is the only real option.
@@lazarus2691 Even those relatively stout STS SRMs needed a lot of rework after water landing. As the STS program got underway NASA had a preference for large liquid side boosters rather than solids, but concluded that intact recovery of relatively lightweight liquids wasn't feasible.
NO, we want something cool.
This prototype is closer to a rocket powered drone than a falcon 9.
I sense jealousy😅
@@sirburst1728 Why would Americans feel jealousy when our country has Space X lol
it's the first step to becoming the Falcon 9, SpaceX also had these tests hundreds of times before the first orbital landing but that doesn't make it any less impressive.
@@actualyoungsoo Because SpaceX isn't a lucrative company
Look around the launch site. Who would place a tanker and all the equipment so close for a test.
Amazing ❤
This shows how ahead SpaceX is. Let's go SpaceX!
SpaceX started 15 years ago, it is natural that it is ahead, the difference is that the chinese companies have infinite money from the CCP, so don't celebrate too soon
lol, as a Chinese I don't even see this news in any media. It is just a trial from a private business.
They successfully landed the rocket back on a ship about 3 years ago.
@@TheRinolanderOh!
Spacex are also chinese rebranded technology Elon Must is outsourcing from china. Lol Tesla is also Chinese rebranded tech Elon is outsourcing from china.
Looks like ISpace has a chance of achieving initial Falcon9 capability in 2025 … if everything goes smoothly. Considering how many problems SpaceX had, I expect 2026 or 2027 is more likely.
If they can provide Falcon 9 level price/performance anytime this decade, then they will win big. I’m guessing they won’t have problems raising capitol and getting government support for guaranteed launch contracts if they need it
@@douginorlando6260 lol do you saw the design is a spacex ripoff probably stolen blue print , so they are probably testing things they didn't manage to steal
@@douginorlando6260 By then Starship will have cornered the market on launching tonnage to LEO.
@@toadsauce8091China can’t utilize SpaceX anyway so thats a moot point. They may offer something that is less competitive than SpaceX, but due to market restriction Chinese domestic market will have no choice but to utilize them.
@@toadsauce8091yes for the western aligned world. But China’s Starlink equivalent will require 20,000 satellites. That’s a huge market. I expect China’s engineer rich population will continue to progress beyond a Falcon9 equivalent.
..How do you say the name of that Desert...?
Congrats !
Not getting my usual notifications for when you post. However I'm glad I saw this one! Go China 🇨🇳 🥳
Fascinating - thank you.
That's really is impressive!! Viva iSpace and Viva China 💗
Great job guys awesome awesome awesome!!!!!!
Always like your channel. Very useful and constructive. Thanks a lot.
I wonder if Ispace has considered using their small reusable rocket for tourists like Blue Origin’s New Shepard to generate the needed income to produce their bigger reusable rocket.
Probably in near future as reverse engineering is changing the space tourism at affordable price.
I think human payload is much harder than cargo. Safety will be a major concern for tourist, they have to launch quite a number of cargo payload to proof that it's save enough for human.
Supporting multiple vehicles in development and mantainence is not economically viable when a larger single rocket will be both more useful and profitable.
It wouldn’t be terribly surprising if the government wasn’t subsidizing it in exchange for allowing rigorous oversight by government officials. It would be pragmatic for both parties involved and significantly relieve financing concerns.
Actually they have, there was a presentation from 2 years ago where they showed a very Blue Origin-like approach with a capsule on top of the Hyperbola-2 first stage.
There's been no update since though, their most recent presentation at CCAF2023 made no mention of this.
congrts. certainly a big acheivement.
Well done!!!!
Eek! Blue Origin is under threat of _another_ company beating them to LEO! 🤣
Thanks for an informative and well-researched video! What's surprising to me is that the Japanese Space Agency doesn't appear to be putting any effort into reusability. They are usually very quick to pick up on such ideas, and often execute them more effectively than the originator! Maybe JAXA are doing something but just keeping quiet - do you have any information about this?
...Japan attempted to fly their first new rocket design at all in over two decades in February and March of this year. The first time the SRBs failed to ignite, the second time the second stage didn't light. Which isn't that bad by orbital rocket standards, but they're working on making a thing fly at all.
They were demilitarized by the postwar constitution. Previous Japanese rockets have been intentionally crippled so that they couldn't be used to deliver warheads to the surface with useful accuracy; IIRC they're literally unguided in the first stage and have to be launched precisely tipped over so an aeroballistic "gravity turn" will put the second stage at more or less the right altitude.
Despite being the ones to write the constitution at gunpoint, the US has been saying "no it's fine now, get some weapons, we gave the Germans nukes come on" since maybe the '70s. It was only in 2014 (after the Russian invasion of Crimea, I assume) that the Diet decided they were allowed to buy some Tomahawks for a retaliatory strike capability in case PRC or its sockpuppet hit them, and in 2022 (after the full Russian attack on Ukraine raised chances of PRC kicking off its invasion of Taiwan and likely striking Japan in the process) that they lifted various restrictions on military spending and deployment of potentially military technologies. Like orbital rockets.
@@HypoceeYTimagine if japan ends up tricking america into thinking they are militarizing for china then to turn on them later😂😂😂.
Its like how bolsanaro talked about his anti china stance which got the cia to get him elected but once elected he became pro china 😅, same with the pakisran coup
@@HypoceeYT and you should wonder who even came up with the strange narrative that China would attack Japan in its unification with Taiwan. But I know you won’t wonder because you have been brainwashed to accept this neocon US state department narrative without ever questioning it. It’s also very funny that Japan the imperialist aggressor who finally was forced to surrender is scared of China. They really seem to have the mindset of a criminal who knows it has committed a grave crime but has never apologized is scared that someone is coming for them.
Stop flattering Japan! You should keep up with the times! Learn more knowledge! Thanks
so is that a high quality copy for domestic use or just A quality?
WOW dude. They are like anything you can do we can do better and without failures. They are the next superpower for centuries for sure.
Great. Way to go China
My congratulations to your channel. It is motivating to see people around the globe trying to reach space. And by the way the best intentions of Elon musk is to help and share technology with people around the world for the same purpose to reach out to the final frontier. Please keep up with the excellent job! 🎉
Musk shares technology? Will a capitalist share technology? The electric vehicle patents announced by Musk are all patents that no one wants.
Nike Nake, Adidas Addadas, xSpace iSpace, at least they could employ designer to design better logo :D
No solo space x hace el aterrizaje de cohetes por lo visto , china ya desarrollan también esta tecnología, que genial
Is a good thing tbh, there is no way we are getting off this rock without everyone trying to get off it 😂
it’s cool and all but there’s no where to go lol
I love it. Here we go with the next rocket company going into off-planet business.
Maybe all the Chinese will move to Venus
New sub fam
Great news. Let the space race begin
Power to them.
China’s space technology development is amazingly impressive. Science the frontier of knowledge. Well done Dongfang keep up the great work
It's a minimum of 10 years behind both Blue Origin and Space X.... nothing impressive here.
@@Jadefox32 Keep going (backwards, that is). The closest comparison is the Delta Clipper of the early 1990's.
Chinese 10 years behind blue origin blue origin 20 years behind SpaceX!
@marcmcreynolds2827 true enough, in every conceivable way the PRC is behind in every metric.
@@dennismurphy1021 That's why they have their own space station, but Americans don't have their own nor Blue Origin nor SpaceX, what a pity for sour yanks who think they are 10 years ahead !
Congrats! From the 🇺🇸
Nice well Done
Does this mean that harbor freight may start selling personal rocket ships?
The US has been landing rockets vertically since the Apollo program (Lunar Lander). The Russians did it with Zarya. Several American companies and those in other countries (e.g., Australia) did the same thing, leading to SpaceX and other leading rocket makers today.
Well other then spacex they weren't reusable
@@SYD_EA Your definition of "reusable" is invalid.
The Lunar Lander was not a rocket. SpaceX was the first operating body to properly land a rocket, not some sort of lunar lander. If any part of the spacecraft went to waste, it is not reusable.
@@woxoom The Lunar lander used rockets to both land on the moon and get back up from the moon's surface. So, you're wrong. The question wasn't about "reusable", it was about rockets landing vertically. Go check wikipedia, which is where the information comes from. Maybe learn some actual rocket science.
The lunar lander is not a rocket!
Thanks!
Thanks for your support Stephen! ☺️
good job
Interesting how detailed some of these companies copy SpaceX, even down to the Graphics at the bottom of the screen, is like a 1 to 1. Instead of inventing their own way of displaying the timeline. What will eventually happen is that a lot of companies will offer cheap rocket launches and that will make it hard for anyone to earn money and for anyone to start a new round of innovation as it would be difficult to earn the investments in R&D with a market where you earn very little per launch. Just like EV market where the first companies are doing great and a lot of startups have gone bankrupt because the golden ear is over and the competition is tough.
I am surprised that took them this long to copy that
How long did it take the USA to copy nazi Germany's rocket technology?......
Congratulations zhong guo
Es ist wirklich spannend zu sehen, wie es in China voran geht.
China is leading the world on so many fronts. Space is just one of them. Hard working and innovative people
What else is China supposedly leading the world in?
@@pieterveenders9793 Modern slavery, genocide, raping of third-world countries for resources, threatening sovereign nations with invasion, trespassing into protected waters, industrial espionage, making viruses and infecting the entire planet for starters.
@@pieterveenders9793 EVs
@@pieterveenders9793 Organ harvesting, copyright infringement & deleting their own people come to mind.
there is absolutely nothing innovative about stealing designs
1:30 Is that a mock dragon capsule on the top of that thing? What are they even doing?
Excellent ❤
Looks a lot like a space x vehicle with a touch of blue origin..
You guys are just so bitter. And your bitterness will only affect you.
@@gene2256you sounded cringe and salty af,bud. Get a life. Breath.
No surprise there.
Imitation is the purest form of flattery.
Said no inventor ever. “Stealing my ideas is IP theft” would be the apt term.
Your iq must be very low but that’s ok you can be educated.
If building reusable self landing rockets is considered imitation, building rockets in general is also imitation in that case, who first tried to reach space? The Russians, guess who saw this and wanted to do it for themselves? The Americans, the Americans therefore copied according to your logic
rocket is invented by china, so flattery