Indian Space Industry : Updates & Discussions

Choice_of _inevitability · Wednesday at 8:52 AM

Nithees1 said:
nothing. so who's building these sats? in-house, a foreign partner, or buying someone with slots already?

There's a tech transfer of various satellite buses from ISRO to various private players. IMS-1 has already been transferred, however it's the IMS-2 that perfectly matches the power and cooling requirements. The Oneweb satellite ISRO launched were similar in size to IMS-1 based satellites.

The only problem with the above is the form factor, it's cubic and cannot be stacked in large numbers like Starlink which are purpose built.

I'm guessing they can source the communication payloads from players like ADTL or AMPL. Lots of ifs and buts there. The only glaring bottleneck I see is the launch capacity.

Gautam · Wednesday at 10:30 PM

https://twitter.com/x/status/2097359827836314089

First launch of Reliance Jio's satellite internet constellation in Sept, 2027!

Reliance Jio, that has been developing a 1,600-satellite constellation for delivering high-speed internet, is now planning to launch their first mission in September next year!

In that first mission, they will launch a small number of satellites to validate their systems and hardware.From there onwards, the roadmap will be as follows –

• 90-100 total satellites by Q2, 2028, internet coverage across India.
• 400-450 satellites by 2030.
• Completed constellation having 1,600 satellites by 2035, global coverage.The constellation will operate in Low Earth Orbit at an altitude of 650 km.

Once the constellation is complete, India will have 30-32 satellites over it at all times, with each satellite delivering 100-150 Gbps throughput, adding up to a total of 4-4.8 Terabits per second!This is higher than the 600 Gbps that SpaceX Starlink has approval for, and the 3 Tbps over India that Amazon Leo has applied for.

ET Exclusive: Reliance Jio eyes September 2027 test flight for 1,600-satellite LEO network

Gautam · Wednesday at 10:31 PM

Prokion · Wednesday at 10:41 PM

Choice_of _inevitability said:
There's a tech transfer of various satellite buses from ISRO to various private players. IMS-1 has already been transferred, however it's the IMS-2 that perfectly matches the power and cooling requirements. The Oneweb satellite ISRO launched were similar in size to IMS-1 based satellites.

The only problem with the above is the form factor, it's cubic and cannot be stacked in large numbers like Starlink which are purpose built.

I'm guessing they can source the communication payloads from players like ADTL or AMPL. Lots of ifs and buts there. The only glaring bottleneck I see is the launch capacity.

Launch capacity can be taken care of, Skyroot CEO Pawan said in an interview that Skyroot is developing a reusable medium-heavy lift launch vehicle which will be especially used for inserting constallations of sattelites, also both Astrobase and Ethereal will be debuting their launch vehicles in 2028, with Agnikul and Skyroot starting commercial launches from next year. I don't think that launch would be a big problem, also probably Jio will not start launching sattelites by the hundreds at once, the cadence and no. of sattelites being launched will increase gradually, giving our launch companies eneough time to catch up. The thing I am worried about is that Reliance will probably partner with a foreign company and give it to them to develop the sattelites, this would completely disregard the sovereignty factor, but again current Indian startups or companies don't have the capacity to manufacture thousands of sattelites. The only company planning to do that is Dhruva Space, its upcoming new manufacturing facility(under construction) will have the capacity of manufacturing a sattelte per day.

, 28:39 onwards.