ISRO Project Surya: Next Generation Launch Vehicle (NGLV)

Aaj Ka Hero said:
Comparison, took it from Strategic frontier forum.View attachment 11574
Click to expand...
The data here is all messed up & wrong, and frankly very outdated to be honest not to mention no proper sources are mentioned to back up those numbers, for example Maximum payload to LEO of NGLV v4 (baseline NGLV) is 20 tons and not 30, 30 tons is the payload of NGLV-H with solid rocket boosters, also 1094 tons is the weight of NGLV-H and not the baseline NGLV (reason being 1094 tons is the weight of the variant capable of transferring 30 tons to LEO as seen here.
1728364807306.png
But we know that NGLV-H is the 30 ton capable variant and not the baseline NGLV
(For more source check my previous posts in the thread)
 
Pundit Pikachu said:
The data here is all messed up & wrong, and frankly very outdated to be honest not to mention no proper sources are mentioned to back up those numbers, for example Maximum payload to LEO of NGLV v4 (baseline NGLV) is 20 tons and not 30, 30 tons is the payload of NGLV-H with solid rocket boosters, also 1094 tons is the weight of NGLV-H and not the baseline NGLV (reason being 1094 tons is the weight of the variant capable of transferring 30 tons to LEO as seen here.
View attachment 11577
But we know that NGLV-H is the 30 ton capable variant and not the baseline NGLV
(For more source check my previous posts in the thread)
Click to expand...
Actually these payload estimates are conservative figures, actual should be more, ISRO never gives the actual values, they only give conservative numbers
 
Anonymous Bharata said:
Actually these payload estimates are conservative figures, actual should be more, ISRO never gives the actual values, they only give conservative numbers
Click to expand...
I am also expecting the payload capacity to increase as ISRO further refines and fine-tunes it's LME 110 engines as so far the numbers being thrown around are purely based on the data from the sub scale LME 20 engine (based on CE 20) ISRO had tested earlier

View: https://x.com/Varun55484761/status/1658417835658600450
As they advance to the full scale engine and fine-tune that I expect the figures to get a lot better.

I am expecting NGLV to reach atleast 22 tons to LEO and 10 tons to GTO
similarly I am expecting NGLV-H to reach 35 tons to LEO and 15 ton to GTO due to both a more efficient LME 110 and our ability to now make better and more powerful SRBs thanks to DRDO's advancements in this field (like composite casings)
 
Pundit Pikachu said:
I am also expecting the payload capacity to increase as ISRO further refines and fine-tunes it's LME 110 engines as so far the numbers being thrown around are purely based on the data from the sub scale LME 20 engine (based on CE 20) ISRO had tested earlier

View: https://x.com/Varun55484761/status/1658417835658600450
As they advance to the full scale engine and fine-tune that I expect the figures to get a lot better.

I am expecting NGLV to reach atleast 22 tons to LEO and 10 tons to GTO
similarly I am expecting NGLV-H to reach 35 tons to LEO and 15 ton to GTO due to both a more efficient LME 110 and our ability to now make better and more powerful SRBs thanks to DRDO's advancements in this field (like composite casings)
Click to expand...

They have already completed the PDR of the engine (confirmed by Somnath sir himself in his interview with Gareeb Scientist before CY-3 launch) , so those numbers are not random
 
SKC said:

View: https://x.com/purohitmanish/status/1885330590867554540
Click to expand...


Sorry but the raptor 3 is like 100 times way better and more advanced than the LM-1100. For starters Raptor is full flow staged closed combustion cycle while LM-1100 is open gas generator cycle which means Raptor is way more efficient than LM-1100. Not only that it only weighs 1500-1600 kgs and can produce thrust nearly 3MN whereas LM-1100 weighs 1100 kgs and produce thrust just 40-45% or Raptor 3 thrust indicating that Raptor is way more efficient pound for pound and more powerful pound for pound. Even BE-4 engine is better than LM-1100. By the way it’s not a knock on LM-1100. It’s still an impressive engine but it goes to show how far we are behind the Americans. China is also working on full flow staged closed combustion cycle engines too.
 
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