ISRO News and Updates

Okabe Rintarou

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Do we have any official info on this ⬇
Personally, I haven't seen any official info out on this yet. But given S200 use, there is no way the acceleration is going to be anywhere near a <3g limit. Its going to be more. ISRO realizes that this is a problem. Which is why human rated GSLV MkIII is only meant to be a stopgap till the HLV-HSP rocket comes online. That will only have liquid motors and thus quite likely a lower g limit.
 

Marliii

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Which is the space suit we are gonna use? Have seen a lot of models in service with russians
 

Okabe Rintarou

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Do we have any official info on this ⬇
Personally, I haven't seen any official info out on this yet. But given S200 use, there is no way the acceleration is going to be anywhere near a <3g limit. Its going to be more. ISRO realizes that this is a problem. Which is why human rated GSLV MkIII is only meant to be a stopgap till the HLV-HSP rocket comes online. That will only have liquid motors and thus quite likely a lower g limit.
Just found out. The limit is 4g. Page 151 "Fishing Hamlet to Red Planet". The book is pretty much official.
.
gslv mk iii 4g limited.png
 

Vamsi

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Just found out. The limit is 4g. Page 151 "Fishing Hamlet to Red Planet". The book is pretty much official.
.
View attachment 115379
I think it's even less now, they derated the chamber pressure of S200, and hence the derated version of S200 is called HS200. As per the earlier schedule, HS200 static test must happen this month .
 

Okabe Rintarou

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I think it's even less now, they derated the chamber pressure of S200, and hence the derated version of S200 is called HS200. As per the earlier schedule, HS200 static test must happen this month .
Maybe they'll release some info on how much that reduces the g load by and how much the thrust gets reduced after the static tests? Or have they released this info already?
 

gslv markIII

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The actual RLV is meant to take 11 tons payload to LEO. Its own weight will be around 6 tons, so that requires 17 tons to LEO capacity as lower stages. Will not mounted on a GSLV Mk2, that graphic from 2019 is outdated. Instead it will be mounted on an SC-400 stage and a C-32 stage. Would make for a great supply vehicle for our space station. But yeah, no crew.
The one on GSLV Mk II- called RLV-ORV- is for RLV-TD return experiment (REX) & it will happen by 2022-23. It will only have a liquid apogee motor for orbiting/ de-orbiting maneuvers. it will place a small spacecraft in orbit, I guess they'll use a robotic arm.

FB5qBX_UUBIL45K.jpg


Roadmap for TSTO "Spaceplane"

Ny4wgr6.png

As for the HRLV.

6QcQyqC.png
 

angryIndian

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Hop this suit is not a real thing.The blue tubings with white connectors looks like the ones we used to operate actuators for small scale industrial applications.They are for low pressure applications and are susceptible to leakages.

 

Cheran

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UAE could explore India's low-cost launch vehicles to liftoff small satellites | Exclusive
Minister of State for Advanced Technology and chairperson of UAE Space Agency Sarah Al Amiri, in an exclusive conversation with indiatoday.com, said that the two nations are looking at a wide variety of scientific cooperation.


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1635506566750.png
 

FalconZero

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What's interesting is that despite being traditional rocket, ISRO's pslv and gslv rockets are close to Falcon 9 series of rockets of Rockets which are reusable. So ISRO indeed has its advantages.

If ISRO creates upgrades GSLV to at least 7t to 8t to GTO then it can outbid even the Ariane 5 rocket. Due to its cost efficiency.

We need a heavy launch vehicle soon.

Also, my favourite rocket is SSLV it's just cute.
 

Varoon2

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^ Interestingly, the SSLV is the one vehicle, where there is still a good chance for a launch by year-end. Keeping fingers crossed. So far, it looks like even the PSLV missions are going to be postponed to the new year( please somebody say it isn't so!)
 

Vamsi

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What's interesting is that despite being traditional rocket, ISRO's pslv and gslv rockets are close to Falcon 9 series of rockets of Rockets which are reusable. So ISRO indeed has its advantages.

If ISRO creates upgrades GSLV to at least 7t to 8t to GTO then it can outbid even the Ariane 5 rocket. Due to its cost efficiency.

We need a heavy launch vehicle soon.

Also, my favourite rocket is SSLV it's just cute.
GSLV - Mk-1/2 already reached mature level ,it cannot be upgraded further . Only possible upgrades can be by replacing current Al alloy tanks with Al-Li alloy tanks in 1st stage liquid boosters, 2nd stage & 3 stage , and by replacing Steel casing in the 1st stage with carbon composite casing . Also it's not good to reuse its first stage , because it is very difficult to refurbish its booster tanks with the remains of toxic fuels. It's better to go for reusable LV with Semi-Cryo engines
 

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