After 4 Years, ISRO Reveals Why Chandrayaan 2 FAILED
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- Опубликовано: 7 авг 2023
- As Chandrayaan 3 is orbiting around the moon, sending pics, there was still uncertainty around why chandrayaan 2 failed. What is the chandrayaan 2 failure reason. There were loose statements here and there, but we never knew properly with technical depth. We'll that now changes.
main source - • LIVE: Chandrayaan 3 In... via @News18Kannada
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Financially Support the channel :
- Buy me a Coffee- www.buymeacoffee.com/gareebscientist (Do not use the buy me a book option, use the member option inside it, as its cheaper when you buy for a year and more perks)
- Become a RUclips Member and join my research group along with other perks : JOIN BUTTON SIDE OF SUBSCRIBE
Video starting was like idk.. maybe an editing glitch, it started like .. "mhuu ne kuch logo ko rulaya..."
I get the point that Chandrayan 2, but editing...
Please explain the Luna 25 and chandrayan 3 that
Which will reach lunar south pole first.
it is very easy to land on moon in spaceflight simulator😅
@thezoldics7648 video description
@@dhanushb2235 😂gg 😂 😂😂 😂 😂 😂😂 😂 😂 NJ u uu 7u🎉Whoah!😂🎉 BB 😂
3 m/s is 10.8 km/hr for those who are wondering. For something that's as heavy as a small car, that's quite fast. Great video as always.
Great point!
10.8 km/h to be precise
For those who don't know 1700kg on earth is just over 280kg on the moon ...
Which is the weight of your average Honda moped.
@@unnouunususer7510 that's what he has written
Please forgive my ignorance and lack of knowledge on all of this. How should I conceive this bit of information? Does this mean the lander can land at this speed even if it is 1/10th of gravity on the moon surface?
Unpopular opinion.. please don't kill me!
I feel like Chandrayaan 2 failure was a blessing in disguise.
It seems like the failure has taught a lot. And ISRO has introduced a whole new dimension of testing and failure handling methods in its mission.
This will be amazing from the perspective of future missions.
I want know ur location
nothing wrong in saying this every failure is a stepping stone to success
But agar first attempt me success ho jata to mja hi aa jata.... Such a complex mission with 100% success rate ki baat hi alag hoti hai
@@rrichard8719 chand pe hai apun!
very true...failures teach you much more than the text you first learnt and attempted......Edison had failed 10,000 times before successfully inventing the incandescent lamp....
I have seen Hundreds of Video Space related but no one explains anything like you explained. Your explanation is thousand time better than anyone, so Simple and easy to understand with Scientific knowledge and facts. Thank you bhaiya keep it up 👍🏼👍🏼
Wow, thanks
Yes that's why I as a commerce student see each and every videos from starting of this channel, post with very long interval ☹️ but the contents are always great and simple🤩
@@GareebScientist you use many complex terms(can't get all properly)
but at the end clearly samajh aa jata hai
Bhai mei bhi commerce ka abhi ca, llb hu par science ka maza hi alag hai 10 th k baad stream commerce tha lekin thrill, reasoning , certainty science ne hi Diya 😂
Everyone was in bad mood after the failure, but this gave a lot of insight to ISRO
Isro ka logo keyse lagaya....?
@@_s2700 channel ka member hu, isliye kuch emojis extra milte hai
Mai in emojis ka use kar sakta hu:
Member he vo
@@_s2700 ISRO ka logo nahi hai wo
@@Madara_Uchiha_2304 woh isro ka logo hai
Somanath sir's explanation was so good with all the slides
yes classic somnath with the nerdy stuff
@@GareebScientistnerdy?
Arre I follow you on Twitter
Thanks for breaking down this explanation! I Hope CH3 goes without any glitches!!
damn, thanks man 👍🏽
@@ankit1819kyu tumhe chahiye thiii???
@@ankit1819 bheekhari toh tu lag raha woh toh apni mehnat se kama raha
@@ankit1819gyan ki gareebi h andhe😂😂
@@ankit1819 gareeb bikh nhi maangta majboor mangta hai tera time ayega kabhi yaad rakhna
I am deeply grateful for your clear and concise explanation of the root cause of the failure. I also enjoyed your insightful interview with Mr. S Somanath Sir. I sincerely value your and Mr. Somanath's outstanding work and dedication to providing accurate and informative content.
Thanks for sharing. Aap jaise logo ke efforts se youth me space ke liye interest increase ho raha hai. keep doing this.
Thanks Umesh 🚀
Had to re-read the title..cause first i was like, "chandrayan.. failed"?!?!?!?..then to find out it was "chandrayan 2"..*breath of releif*
Same bro! Fwoo!😅
Thank you for creating and maintaining this educative channel and its contents !!
Thank you, my hobby :)
BRO saved 1 doller😂
Bhai $1 ka toffee kharido gey kya??... But thanks
dollar 1 me toffe ni amul dudh ki bottle ati h@@PrabhatKumar-de7eo
@@somethingdifferent212 Lol 😂. That thing is Auto set @ ₹449 and not ₹ 500. You can try sending too, you will find out..
I attended this talk while I was hanging from the staircase in the hall 😂. The hall had no space to even stand on...such was the enthusiasm of the people. Anyways it was a very nice talk given by Dr. Somnath sir about the various aspects of Chandrayaan mission and even though the talk was quite a bit technical, he tried to explain it in layman terms which I liked the most.
It is true that we learn more from our failures if we do not give up and learn from it. Advanced AI and robots would be next move to form shuttle service with matter from the moon. Next would be a manned mission with moon base. Exciting to to see ISRO raving ahead.❤
Lander was well calibrated upto Camera Coasting phase, however timer played an important role and that backfire the attitude of Vikram(Stability). But it was already decided by ISRO that thrust can be accommodated later but with time so much anomalies proved us wrong.
Pls make a video on LUNA-25🇷🇺 and its comparison with Chandrayaan3🇮🇳🙏
Yes 💯💯💯💯
Last luna24 was launched 50 years ago
Yes please
@@Your_real_dadThey have launched Luna 25 and it may land on South pole of moon, probably a day before Chandrayan 3.
@@vipanrana2919 may be
Well explained........ We will surely succeed this time.. No doubt.... Jay hind.... 🇮🇳🇮🇳🇮🇳
dont jinx it
Chandrayan 2 was not a failure. It was a stepping stone. A great achievement in itself.
still was a failure, 3 is a success
absolutely. the clean modular fix indicates it was not a failure. just missed something to consider (throttle control) during calibration last phase!
@@mazedaarChutkule failure? Usi ki wjh se ye successful hua h
Exactly failures are pillars of success.
Accept the failure kid and move away
You studied it with due diligence and made an effort to ensure people understand it also. I have always been wondering why do we don't have enough science channels like veritasium. I can see at least someone has decided to take the lead. I have never done super thanks on YT but this time yiu deserve it. A small contribution from my side.
Keep up the good work and you earned a loyal follower. Please keep them coming. 😊😊
Thank you, if thats what you enjoy. Chekx out my atomic clock video where I visit an actual lab
congratulations to both of u 🎉🎉
First time understood the deep science behind the Chandrayaan 2 failure. Thanks for summarizing this so well. ISRO is doing amazingly well, but they should move fast in bringing in advanced technologies. SpaceX and Nasa are catching up with amazing new technologies and ideas that is taking their space program to a very different level.
All the best for the Chandrayaan 3 lander!!
I believe your interview with him was a major part of it. Not sure if that is actually the case though. But its good to see them come out with it. Tbh i was just yesterday thinking why hasnt anyone submitted a PIL about this 😅. Anyways, they need more transparency. Unless its a mission for national security, every operational detail needs ro be published, regardless of it being a success or failure.
I think so. Like he was kind of dismissive about these that day but probably thought about it later and gave it
@@babayada2015 yeah, i have a similar feeling. He felt very guarded during the interview. I believe that is due to ISRO not really being a media savvy organizations, if I can put it that way or that they don't do much media interaction. Whether it's due to it being a Govt job and hence things can't really be talked about and deep dived into or maybe because they are scientists and so are unable to share things properly, as they might lack the ability and/or are just not very good with such things.
That's why I strongly believe they need a media house. Not only them but even our military ones. Although tbh, all IA, IN and IAF ads in seen are fairly well made. Although some of that Govt way of talking does slips through sometimes 😂😂
Or is that ISRO wanted publish it just before CH3 so that they can also include what all corrective actions they have taken care from past CH2 failure experience..
Totally agree!
@@sreenathasettyBalaganoor yeah that could be the case. And I hope it's that rather than them not showing it to avoid public/political backlash, to keep that funding. Although I do find it counter productive. This came to my mind after seeing Rocketboys, even though the times have changed, I believe that environment of talking less about failures and rather work on them has carried on. Which isn't bad per say, but to me it feels rather negative.
But tbh, it feels something very similar to what political parties do in India, where just before elections they count all the things they did. You know? Like almost preparing us for of its a failure they can say "Look we tried!", "we even made these changes". I know very cynical but I can't help but think on the spectrum about this.
But I'm just guessing here
Beautiful and precise explanation of how Vikram failed to land. It is always better to know our failures and make corrective measures as we progress. Thank you.
Amazing explanation. Finally. Anyone who has played space flight simulator can understand the pain of landing on moon managing both the velocities specially doing it for the first few times.
I thought I was the only one who knew about that damn game. I can't express how many times I had failed before being able to successfully land on moon, and that too with the lander legs broken lol. And I still remember when I was first trying to land there, how desperately I was trying to open parachute in the almost non-existent atmosphere of moon to land there and the game said "can't open parachute in vacuum" and my entire lander just crashed miserably with not even a speck of dust remaining.
And to think that our scientists have to go through this in reality and the mental pressures they have to endure, it's scary.
Fantastic video! I am not a native Hindi speaker but the closed captions were very clear and not too fast that I could follow easily. The video was to the point with no unnecessary fluff. And very happy you have kept it to under 10 minutes and didn't monetize it. Appreciate it! Subscribed!! Let's hope Chandrayaan 3 is a full success!!
😊😊😊
For those who do not know:
The OHRC camera operates in the visible Panchromatic band (450 to 800 nm). With a Spatial resolution of 25 cm from a 100 Km lunar orbit covering a swath of 3 Kms, the OHRC provides the sharpest images ever from a Lunar Orbiter platform.
OHRC is an important tool for Lunar topographic studies of selective lunar regions.
that's a resolution of 0.000143239 degrees! (0.516 arcseconds) wow, not bad!. By comparison, the Euclid space telescope VIS camera resolution is stated at image resolution of about 0.23 arcsecond.
Good video and Kudos to the news channel who recorded it ahah. These are a fantastic set of corrections. However a quick question, do we know what sort of processor (ARM or other) they use on-board? I don't have much experience with SLAM approach or Flash Lidar for that matter, but is the LDV a version of Flash Lidar (principle seems similar) and is the processing capabilities a major bottleneck here?
I know flight heritage is a major deciding factor from prior mission design experiences but at this point we should explore a better alternative for onboard ops right?
Just curious to learn.
good question, not sure what they used
considering there is a significant amount of image processing happening
for example there is a camera to detect horizontal velocity based on pixels moving, camera to understand depth of hazards below based on shadows etc
@@GareebScientist Just thinking out loud here ahah. Horizontal velocity is enough but we are looking at massive geometric aberrations due to velocity. I am curious how they correct for it. When considering any optical system (passive), ranging is the most uncertain part of it so depth or altitude is out of question, unless, they do some sort of massive image processing by comparing fiducial marks from the high-res image that's onboard the CH3. Also, LDV seems to be using the inverse concept of SLR.
@GareebScientist thanks for the response!
@@GareebScientistI thought they might use Xilinx Ultrascale FPGA SoC or may be Intel's FPGA board as they have a healthy processing power and could be shielded from radiation with few modifications.
@@thebuddhasector9493 interesting, should you come across any research paper or white paper for this specific application, I would really appreciate it if you could share it. Thanks!
Thank you 🙏 as usual a great video with detailed information
Thanks Krish
Very good explanation for the issues. I was unaware of these minute details. thank you for working on this video and sharing with us.
इस व्हिडिओ के लिए आपका बोहोत बोहोत धन्यवाद ।
में हमेशा इस सवाल का जवाब जानना चाहता था, लेकिन कोई भी इस सवाल का सटीक जवाब नही दे पा रहा था ! ! !
Explanation clean pass!
informative
Thank you so much, GS-ji, for the wonderful videos covering the Indian space sector over the last few years! We really look forward to your videos!!
A small 'gilahari ka yogadaan' to help you keep up the good work. 🙏🚀🧑🚀
Arre not small. Thank you so much 🔥🙏🏻
Thanks for Sharing.
Saw it live sitting in the Auditorium.
It was thrilling to get to see S. Somnath sir from that close.
Thanks for the update GS...was really informative❤️🚀
Btw r u working on some animations during Vikram's decent & landing..?
From the way of your narration I think you have helped many of your classmates to clear exams, by explaining beautifully the concepts on the previous day of exam or just before the beginning of exam (before entering the exam hall)😊.
Haha.. I also felt the same.
@@MandeepSingh-bv2zw 👍
Great knowledge gained from our last attempt hopefully we land softly and over river roams freely on surface
Thank you very much gareeb scientist.... awesome video...made my day ❤.
Appreciate your work buddy... you really did in depth research and gave a good explanation. All the best 👍
Bhaiya I want to ask that when our made in India NavIC system will be publically available
it is, i already use on my phone, download gps tester app and check , most new phones have, espcially qualcomm chips
2024 -2025
Most difficulty part in designing a Model Predictive Controller is the real time optimisation of the Cost function.
I believe in chandrayan 2 mission , vikram crashed because of lack of enough onboard edge computation to pull this type of heavy mathematical lifting .
Also suboptimally designed EKF just added more to the errors .
CY3 will be a success.
They did it!!!
@@nooms6993 They should teach us also 😁. One hour free class every fortnite from isro scientist should do the job .
Really Educational, loved it ❤️
Wonderful detailing as always. ❤ Very rare to see such a informative science indian channel. 👍 Best Wishes 👍
I guess Chandrayaan 2 failure was good. Made us learn our mistakes. Considering the upgrades, now I have high hopes for safer landing.
Failures are super important as it teaches us to be better every time we try however it better only and only if we work harder than before and take it as a challenge not to fail again !
ISRO has that attitude, wish GTRE also had similar attitude!
Thanks for the beautiful explanation really love the video ❤
Well explained and that too in a way that any for a layman to understand. Much better than those RUclips channel who had made video on Chandrayan 2 and 3 but with a different agenda and negative concepts. Where as yours is to the point with technical explanation and reasoning. Best wishes 🤞🙏
I HAVE A QUESTION:
Jitne bhi outer space spacecrafts hain, unse saare space agencies contact kaise establish karte hain? How information is communicated from bodies like landers, orbiters, spacecrafts (like juno mission, Voyager, mangalyaan, chandrayaan, etc.)
If possible please iske mechanism pe ek video banayein 🙏🏼
Radio waves
Yes I also want to see video ,that clear and explain all technical things.
@@emarsshelpline9848 +1
@@anishgoenka8238so radio waves can bend or pass through the moon? Because we are talking about landing on South Pole
Direct LOS communication hoti hai suing radio waves beamed from Deep Space antennas
The end animation is too much!!! 😂💥🔥😂
which language is used to write the onboard software/algo? Is it open-source by any chance? - thank you!
@GareebScientist can you kindly provide me any such optimization problems that is faced during this kind of space craft landing???
bahia pls explain cut off in rockets
Thanks! Keep up the good work❤
Thank you too Sanjeev!
What are processors used in the rover system ?
What are the Socs ?
Do we have any knowledge about this ?
Can you share that Lecture video link here?
Sometimes i play Spaceflight simulator...
And i can relate this...
If i will try to slow down horizontal velocity then it may be possible that in that time your vertical velocity increase...
Now We have very less time to turn the spacecraft engine downward and decrease vertical velocity....
Edit:-
Pray for Chandrayaan 3 ❤
No need to pray,isro learnt a lot from Chandrayaan 2,they will surely land this time.
Thanks for the amazing and informative content
Thanks for watching Shreyas :)
Extremely valuable content. Great work man 🙏
*Such educated+enthusiastic viewership... ❤*
_I really felt very happy to see so many intellectuals together taking deep intrest in_ 🌌.
*You peoples are amazing. 🙏⭐*
Thanks!
thankss
Very informative vedio. Thank you. You explained in great detail. Increased our knowledge
4:40 and 7:14 The variation in thrust, it seems were caused by misbehaving thrust valves. What is your say on it? Did ISRO upgraded the thrust valve to reduce the range of variation of thrust, along with providing thrust regulation control for all stages of powered descent?
Yes potentially could be. Highly likely. Yes as I mentioned slewing rate uprated
I appreciate your content, and looking forward to watch more videos based on scientific research. 🙏🏻
Thanks a lot, yes they are coming
Basically, nothing went wrong with it, it was just poorly programmed. We could have actually done a flawless landing on the first try.
Thank you for summary
Not poorly it's just an anomaly, It's not easy that's why it's called rockey science
Exactly
Agar moon par 500*500 par land kra nahi sakte to , future mai spacex jaise rocket kaise bnayenge jo earth pe 20*20 meter ki boat par land karte hai
Abe wahi to main hota hai control mein..
Very nice info, I appreciate your efforts, Thank you Dear.
Bro, what software u used to create the moon and craft animation???
"code phat gaya" As a software developer I can relate that 😆😆
Thank you for explaining in detail about landing sequence,hope CH-3 will be successful.
Thankyou for this video brother , I really wanted to know what happened that day
Chandrayan 3 has launched successfully today on moon 🎉🎉
I think in future we would be able to use Machine Learning to Land things. As more data gets collected over time.
How do you know that it is not being done already?
Very detailed explanation, thanks!
what is the exact location of cy-3 landing site?...and how far is it from LUNA-25 landing site which is BOGUSLAWSKY crater?
I must say you've aced in this!
i always wondered how they managed all those complicated landings 50 -60 years ago, with all those primitive computers having few KBs of memory. 🤔
Jadoo
they also had tens of billions of dollars poured into their space agencies back then. India still doesnt have this luxury, as we are a poor nation. Also even back then they used massive expensive rockets to launch big space probes with much more fuel in the probes giving them more flexibility during breaking phases, India's rockets (medium lift launch rocket) cant transport that much heavy loads in higher orbits for the moment. For development and usage of heavy lift launch rockets (can carry more payload), one needs much more money, which is why even SpaceX is trying to build re-usable rockets because heavy rockets cost simply too much for developing countries.
Edit: Im just a lehman btw interested in space tech, im no expert
Very Good explanation, for us. Thank you & keep up the good science work
Very nicely explained in easy language. Thank you for making this video
This is how you explain to a 15 year old kid. Nice explanation bro.❤
same here bro
Really Good Video Also Very Informative One But Ai's Are Doing Chandrayaan-2 into Chandranthu😢😢
fixing
Thanks for your presentation.Jai Hind Jai Bharat
Nice, informative. Thank you!
Nicely explained. Well done. It's kinda interesting how similar the errors were with Apolo landing mission... Similar not same... Anyways .. am glad isro learnt from it. Also remember guys. PSLV failed tooo and over these failures it became the workhorse for isro. On back of which isro is standing the way it is today. So this lander failure is just that kind of stepping stone to future on Indians space program. Jai Hind.
Thanks!! You are inspiring more and more people to focus on building a better india.
Please keep at it!!! Best wishes
Thank you Shounak 🖖🏼, I will
Very informative and descriptive
I'm waiting to get my first job so that I can contribute to this channel from first income.
No no
1st everyone else including family. Once you have too much to waste and don't know what to do only then consider
Lowkey... Sivan wasn't as great of a chairman as people make him out to be. Compared to other chairman's we've had and have
Explanation is awesome..great work
Hii Gareeb Scientist, Please make me understand this point:- Weight of lander is 800 kg and our lander can withstand 3 m/s speed of fall. But wouldn't the weight of lander be felt less due to less gravity on moon? Kindly help me with this. Thankyou!
Hello sir, i am a commerce student but have keen interest in the field of astronomy, during the launch of Chandrayan 2 i found your channel and since then I've watched every single video that you posted, you explain soo well that even a commerce student can understand everything.
Soon i may get a job and i will definitely support your channel financially by becoming a member.
Thankyou for sharing amazing knowledge with us ❤
thanks Vipul, save money, only when you have some to waste consider that :)
Sir kya lagta hai kaun pehle pohchega...... Russia or India. ??? 🤔🤔🤔
russia, their landing date is one day + earlier because unke loaction pe sunrise early hein, and science missions want to use all 14 days
@@GareebScientist then obviously we've the extended burden.... 1st become successful and 2nd is to do it in time. 🤗
Superb explaination. Great video. 👍🏼
Best of luck to isro
1st comment
And I just wanna to know that what is the scientific possibility you are seeing for the success of chandrayaan3
Bt jo bhi h mere liye toh ye vaise hi succeed hi chuka h abhi se hi 😅
videos on it soon
@@GareebScientist thankyou sir
Very good and to the point information, loves to watch your video on the Chadyrayann 3 successfull landing,. Like your the way of narration..
Nice explanation man
So, I think we came up with an absolute reason for chandrayaan fail mission
things seem much more confident and clear now
Yea you are right
@@GareebScientist when the video will come about Aditya L1
Bro, very ckear explantation in simple language. Other channels couldnt explain this simple and claer. Kudos to your videos. Watched all most every one of it, very clear explanations.
Been searching a good video bro, thanks and all the best for future ones too.. 👏🏽
Glad you liked it Raghaven
What a brilliant explanation.....keep it up...aap Gareeb scientist nehin....Amir dilwaley ho, taaki hum jaisey information ke bhookhey pyasey insano ko Roz ka pet bhar khana mil sakey....beautiful video....👏👏👏👏👏👏
Very clear explanation , much appreciated , good thing is that it is being explained with a very layman approach.
Thank you for sharing well researched article.
Brother, which software/website did you use for the above video?
Brilliant video! Very well explained! ....and failure?... that's the starting point of any success! How many failures we faced before the first flight?? Do we talk today about those failures?