ISRO's Project Soorya - Next Generation Launch Vehicle (NGLV) development program

[Swesh]

now if we develop a heavy version of NGLV (like falcon-heavy) with 3 cores cores each with 615t of propellant loading, then we can do a crewed moon mission just like how chinese are planning to do with longmarch-10,

now the question is,if total propellant loading in 1st stage is 615t,then why did they limit it to 445t? answer is because of low T/W ratio in Core Alone configuration

 

[Swesh]

now the question is,if total propellant loading in 1st stage is 615t,then why did they limit it to 445t? answer is because of low T/W ratio in Core Alone configuration

So simply put, LM445 is actually LM615, but will only be loaded with 445t in Core-Alone version,while it will be fully loaded upto 615t in Heavy version

 

[Swesh]

So simply put, LM445 is actually LM615, but will only be loaded with 445t in Core-Alone version,while it will be fully loaded upto 615t in Heavy version

since it will only be partially loaded upto 445t in core alone, it will have less payload capability

 

[FalconSlayers]

 

[Blademaster]

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How is this better than Falcon 9? Falcon has better payload capability to LEO than this proposed rocket and it only took SpaceX 6-8 years to make this design work when it will take ISRO about 15-20 years to pull this design off?

And when ISRO finally get this ready, SpaceX and others will have bigger and better rockets including the Chinese versions and ISRO will still be behind.

India is slow as an elephant as fuck.

 

[karn]

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If this is true about the methalox engine .. it seems the methalox is at the same level of development as sce2000 .. given these 2 are almost a decade apart in development time is very surprising.

 

[Lonewolf]

If this is true about the methalox engine .. it seems the methalox is at the same level of development as sce2000 .. given these 2 are almost a decade apart in development time is very surprising.

Scaling up a inhouse open cycle design vs a closed cycle from scratch

 

[Chinmoy]

How is this better than Falcon 9? Falcon has better payload capability to LEO than this proposed rocket and it only took SpaceX 6-8 years to make this design work when it will take ISRO about 15-20 years to pull this design off?

And when ISRO finally get this ready, SpaceX and others will have bigger and better rockets including the Chinese versions and ISRO will still be behind.

India is slow as an elephant as fuck.

If you want to compare it, compare it with Starship rather then Falcon9.

 

[Blademaster]

If you want to compare it, compare it with Starship rather then Falcon9.

it doesn’t even surpass Falcon 9!!!!!!!

 

[Tejbrahmastra]

https://twitter.com/Indrani1_Roy/status/1742344727050268709?s=20
https://twitter.com/Indrani1_Roy/status/1742345002754408598?s=20

 

[Chinmoy]

it doesn’t even surpass Falcon 9!!!!!!!

It does, only if you don't goggle Falcon and Starship as it is bigger then mine.

 

[Blademaster]

It does, only if you don't goggle Falcon and Starship as it is bigger then mine.

This makes no sense at all!!! Please refer to the payload specs at wiki or even at SpaceX webpage.

 

[Chinmoy]

This makes no sense at all!!! Please refer to the payload specs at wiki or even at SpaceX webpage.

That's what I am saying.

Don't look at it as, his is bigger then mine. Look at technology involved.

 

[Blademaster]

That's what I am saying.

Don't look at it as, his is bigger then mine. Look at technology involved.

Why not? It shows how far and advanced the technology is. Methane engines only makes sense if you were doing interplanetary travel. Otherwise there is no reason to do methalox engine as Hydrogen and LOX gives better impulse. The reason that Musk went for methalox engines was because he could produce the necessary fuel on Mars to have a return trip.

 

[Chinmoy]

Why not? It shows how far and advanced the technology is. Methane engines only makes sense if you were doing interplanetary travel. Otherwise there is no reason to do methalox engine as Hydrogen and LOX gives better impulse. The reason that Musk went for methalox engines was because he could produce the necessary fuel on Mars to have a return trip.

There is the problem.

There is something called equilibrium to be achieved when we talk of rocket science.

1- Kerolox engine: The cheapest of all in operation, but when it comes to commercial use, the costliest of all. Having the lowest impulse, the transfer weight is lowest of all. Harmful from environment POV too.

2- Hydrolox engine: The cheapest of all from commercial POV, but costliest of all from operational POV.

3- Methalox engine: Its a compromise in between 1 and 2. So, its not just for interplanetary travel, but for commercial use also.

Now coming to why I am saying to compare NGLV with Starship, its because of the development of Methalox engine. Falcon 9 use Kerolox engine just like our launch vehicle. Its the Methalox which is making the whole difference.
Yes, we can differentiate in between both on terms of engine cycle technology. Raptor is much more of a complicated and efficient engine then ours, but when it comes to payload lift off, we could easily enhance it provided we have the engine tech, which we already have.

 

[Indx TechStyle]

And when ISRO finally get this ready, SpaceX and others will have bigger and better rockets including the Chinese versions and ISRO will still be behind.

India is slow as an elephant as fuck.

There are no "others" in world except US & China with SHLVs in development and India having concept.

And since Indian rocketry is a thing of late 80s factually, it is not slow at least.

 

[FalconSlayers]

NGLV Payload Enhancement Plans maybe for the 2030 and 2040s time frames.

 

[karn]

NGLV Payload Enhancement Plans maybe for the 2030 and 2040s time frames.
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At the start I was a bit disappointed with the design . But it's grown on me .
The NGLV can place a 6 ton sat into geo stationary orbit and this is the weight of ISROs heaviest comms satellites (there are hardly any other satellites that are heavier ) in reusable mode . For things like moon mission or space station the rocket can be used in expendable mode with strap on boosters. This is a very dhandhomaxxing vehicle.

 

[Blademaster]

NGLV Payload Enhancement Plans maybe for the 2030 and 2040s time frames.
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New Glenn with just one rocket can take up to 48 tons to LEO. Sounds like New Glenn is a better design than this.

 

[FalconSlayers]