From Sriharikota to Orbit in 16 Minutes
At 12:05 p.m. local time on July 18, a 20-meter rocket painted in India's tricolor lifted from the Satish Dhawan Space Centre and arced east over the Bay of Bengal. Sixteen minutes later, Skyroot Aerospace's Vikram-1 had inserted its payload into low-Earth orbit - and India had its first private orbital launch (SpaceNews, July 18, 2026).
The milestone also marks a turning point for additive manufacturing in aerospace propulsion. Vikram-1's upper stage is powered by the Raman-1, a restartable hypergolic liquid engine whose thrust chamber body and injector are fully 3D-printed. The injector is significantly lighter than a conventionally machined equivalent, and the printing process reduces component count and lead time versus traditional manufacturing (3D Printing Industry, July 2026). Skyroot compressed what would have been a multi-month machining and assembly cycle into days of print time.
The company was founded in 2018 by former ISRO engineers Pawan Kumar Chandana and Naga Bharath Daka. By May 2026, Skyroot had become India's first space-tech unicorn (SpaceNews). The Vikram-1 launch - designated Mission Aagaman - was its first orbital attempt. It succeeded on the first try.
How the Raman-1 Engine Compresses the Supply Chain
The Raman-1 is a hypergolic engine burning monomethylhydrazine (MMH) and nitrogen tetroxide (N₂O₄). Hypergolic propellants ignite on contact, eliminating the need for an ignition system - a design choice that simplifies the engine architecture and reduces potential failure modes.
What makes the engine distinctive for AM is not just the material savings but the supply-chain compression. A conventionally manufactured injector for a small liquid engine typically requires multiple machined parts - an injector faceplate, distribution manifolds, orifice inserts - each sourced from different suppliers, then welded or brazed together. Skyroot prints the injector as a single piece, eliminating the weld joints and the associated inspection burden. The reduction in component count means fewer suppliers to qualify, fewer inspection points, and a dramatically shorter procurement timeline.
The company operates its own fleet of metal powder-bed fusion machines at its Hyderabad factory, including systems from EOS and Nikon SLM Solutions. Skyroot has not disclosed the specific alloy used for the Raman-1, but the engine's hypergolic propellant combination is corrosive and requires materials compatible with nitrogen tetroxide - typically Inconel or a high-nickel superalloy, both well-characterized for laser powder-bed fusion.
The Production Scaling Challenge Ahead
Rocket Lab's Rutherford engine - the world's first 3D-printed, electric pump-fed orbital engine - reached orbit in January 2018 on its second attempt. By May 2026, Rocket Lab had produced hundreds of Rutherford engines, supporting over 70 Electron missions (3D Printing Industry, May 2026). That production cadence - from first flight to industrial volumes in roughly eight years - is the benchmark Skyroot now faces.
The comparison is instructive for what it reveals about the scaling problem. Rocket Lab's Rutherford is a LOX/kerosene engine with an electric turbopump, producing roughly 27 times the thrust of Skyroot's Raman-1. But the relevant metric is not thrust; it is production repeatability. Rocket Lab prints each Rutherford engine in 24 hours, then performs a hot-fire acceptance test before integration. The company has demonstrated that 3D-printed rocket engines can be manufactured at industrial volumes with consistent quality.
Skyroot's target of one complete Vikram-1 rocket per month from its Hyderabad factory is ambitious for a company with exactly one orbital flight. The company will need to demonstrate that its printing process, post-processing, and hot-fire acceptance protocols can produce Raman-1 engines with the same reliability at a fraction of Rocket Lab's cumulative production experience. The Indian supply chain offers cost advantages - lower labor rates, established precision manufacturing capability - but the qualification burden for flight hardware does not scale down with geography.
Bull Case, Bear Case, and the Indian Market Reality
The bull case rests on three pillars. First, Skyroot succeeded on its first orbital attempt - something Rocket Lab, Relativity Space, and Astra all failed to do. That suggests a disciplined engineering culture and conservative design margins. Second, India's IN-SPACe regulatory framework is actively encouraging private launch, and the Indian government is a potential anchor customer for Earth-observation and communications satellite launches. Third, Skyroot's capital efficiency - having raised significantly less than Relativity Space's roughly $1.3 billion for a failed first orbital attempt - compares favorably to its peers.
The bear case is that one flight is not a production system. Rocket Lab's first successful orbital flight was in January 2018; the company did not reach a monthly launch cadence until 2023. Skyroot's Raman-1 produces modest thrust - adequate for the Vikram-1's upper stage but far below what the company's planned Vikram-II (targeting 2027) will require. Skyroot has not disclosed whether the Vikram-II's larger engine will also be 3D-printed, and scaling AM from small hypergolic engines to larger pump-fed cycles is not a linear engineering problem.
The Indian market risk is real but manageable. AgniKul Cosmos, Skyroot's domestic competitor, has flown its single-piece 3D-printed Agnilet engine on suborbital flights and completed cluster tests, though it has not yet reached orbit. Two Indian companies pursuing the same small-satellite launch market with 3D-printed engines could split domestic demand before either reaches production scale. But the total addressable market for small-satellite launch is global, and India's cost base gives both companies a structural advantage over US and European competitors.
Rocket Lab is the closest parallel to Skyroot's position - same value-chain position, same AM-first propulsion strategy - but Rocket Lab operated out of New Zealand and the US with a different cost structure and a decade-long head start. Skyroot's challenge is to compress that decade into a few years while operating in a market where the government is both regulator and potential customer.
The Raman-1 engine has validated that 3D-printed propulsion can reach orbit on a first attempt from an Indian factory floor. The harder question is whether Skyroot can print its way to a monthly launch cadence before the market - or the competition - moves on.