533
Points
152
Comments
sohkamyung
Author

Top Comments

mayamaJul 24
Regarding Indian private space sector, In addition to skyroot solid rocket, following are noteworthy

Agnikul is planning to launch semi-cryo kerosene rocket pretty soon. Their engine is 3d printed and use electric pump fed 25kN small engine. Planning to launch 4 clustered engines as first stage and already did suborbital test, with some parachute splash down reusability claims.

Astrobase is recent entrant. With decent funding and former ISRO scientists as core team, developing 800kN FFCS methalox engine. FFCS is called holy grail of liquid engines. They have acquired largest metal 3d engine and planning VTVL 1st stage reusability

itissidJul 24
There is just so much that can go wrong with rocket launches if you do cursory reading about these things. A few random examples: The lowest stage cant just be "turned down" or modulated because they work by burning an inner solid rubber lining that's like an annular cylinder. The first three stages are roughly doing the job sequence: `lift off the ground -> reach target altitude -> reach target orbital velocity` and each stage is modulated for atmospheric pressure, gravity. Another limit is you can't really design it for a human in the middle(like a jet plane), so the rocket's computer needs to do everything, and when the rocket's pitch or yaw or roll(in a manner of speaking) go off beyond a nominal range its game over.

ISRO has a very good track record of launching rockets with solid state engines. I do wonder if almost all of their expertise was used for the first three stages(and they are not 3d printed)? And how much more difficult it is to make the last stage as compared to the first three, which as I understand, was the stage designed and tested by skyroot itself(manufactured by Wipro 3D).

zbentleyJul 24
And with $160MM in funding at a $1.1B valuation? I don't know about their debt, but to get to LEO in 8 years on that little money is extremely impressive.
sidcoolJul 24
Only the third country to achieve this. Kudos.

There's another startup trying reusable rockets.

josefrescoJul 24
For those interested, just read a great book on this topic: When the Heavens Went on Sale by Ashlee Vance: https://www.goodreads.com/book/show/62050244-when-the-heaven...

It profiles: Astra, Firefly, Planet Labs, and Rocket Lab

walrus01Jul 24
The first, second and third stages all being solid rockets also means India now has a global-range ICBM, with only a little bit of modification needed to make it storable in a silo. Privately developed, but I would be astonished if the Indian military isn't well aware of this new capability.
jdiez17Jul 24
Extremely strong performance from India’s Skyroot with their Vikram-1 rocket. I can say that many in the space industry are looking for new launch capacity to LEO.
bovermyerJul 24
That's pretty cool. The phrase "3D-printed engine" stuck out to me as neat, too.
Visit the Original Link

Read the full content on arstechnica.com

Source
arstechnica.com
Author
sohkamyung
Posted
July 20, 2026 at 02:43 AM


More Top Stories

anthropic.com Jul 24
Claude Opus 5
1382751 commentsby alvis
Details
dbos.dev Jul 24
Postgres LISTEN/NOTIFY actually scales
23643 commentsby KraftyOne
Details
wsj.com Jul 25
Taylor Farms Called White House to Try to Delay Cyclospora Recall
8417 commentsby JumpCrisscross
Details
unattributed.cc Jul 22
Re: Bye Bye Gravatar
125 commentsby surprisetalk
Details
news.st-andrews.ac.uk Jul 24
Sperm Whales blow bubbles to achieve restful, vertical sleep
533 commentsby hhs
Details
artificialanalysis.ai Jul 24
Opus 5 is currently #1 on Artificial Analysis Intelligence Leaderboard
186122 commentsby aarondong
Details
👋 Need help with code?