EtherealX: Bengaluru’s Bid to Build a Rocket That Brings Both Stages Home

India’s private space industry is moving beyond satellites, components and small launch vehicles. A new generation of companies is beginning to work on technologies that could influence the economics of reaching orbit itself.

Among the most ambitious is Ethereal Exploration Guild, the Bengaluru-based space company widely known as EtherealX. Founded in 2022, the company is developing the Razor Crest Mk-1, or RCM1. It describes the vehicle as a fully reusable medium-lift launch system.

The ambition is unusual even by global launch-industry standards. EtherealX does not intend to recover only the first-stage booster. It wants the upper stage to return as well, allowing both principal stages of the launch vehicle to fly again.

If the company can demonstrate this architecture reliably, India could gain more than another private rocket. It could acquire an indigenous reusable space-transportation platform designed around high launch cadence, flexible orbital delivery and lower recurring launch costs.

However, Razor Crest remains under development. Full reusability is the company’s engineering target and has not yet been demonstrated in an orbital mission.

From Bengaluru Startup to Launch-Vehicle Developer

Ethereal Exploration Guild was established in Bengaluru in 2022. Its founders include Manu J. Nair, Shubhayu Sardar and Prashanth Sharma. The company has focused on launch systems rather than limiting itself to one propulsion component or subsystem.

Its flagship programme is Razor Crest Mk-1.

The company describes RCM1 as a medium-lift vehicle capable of operating in expendable, partially reusable and fully reusable configurations. This gives EtherealX a potential way to trade payload capacity against recovery requirements depending on the mission.

According to specifications discussed by the company, Razor Crest is being designed to carry up to 24.8 tonnes to low Earth orbit in expendable configuration. The partially reusable configuration is targeted at about 22.8 tonnes, while the fully reusable version is aimed at roughly 8 tonnes to LEO.

That last number is particularly important.

Recovering a rocket requires propellant, landing hardware, thermal protection and structural margins that could otherwise be used for payload. Reusability therefore does not come free. The engineering problem is to make the recovered hardware valuable enough across repeated flights to compensate for the payload penalty.

The Difficult Part Is Bringing the Upper Stage Back

First-stage recovery has already transformed commercial launch economics globally. Upper-stage recovery presents a much harder problem.

A first stage separates relatively early during ascent. An orbital upper stage travels much faster and reaches far higher energies. Returning it means surviving atmospheric re-entry while retaining enough control and propellant to complete recovery.

EtherealX is designing Razor Crest around recovery of both stages, rather than treating the upper stage as disposable hardware.

That approach separates the programme from launch systems such as Falcon 9, where the first stage is routinely recovered but the second stage is normally expended.

The economic logic is straightforward. If engines, tanks, avionics and other high-value hardware can repeatedly return instead of being rebuilt after every mission, the cost structure of launch operations could gradually shift from manufacturing rockets towards maintaining and operating a reusable fleet.

The difficult part is proving that the refurbishment bill remains low enough to make that equation work.

Razor Crest Mk-1: Three Operating Modes

EtherealX is not tying RCM1 to a single recovery configuration.

The company says the vehicle is being engineered for expendable, partially reusable and fully reusable missions.

This flexibility could become commercially useful.

An expendable mission can maximise payload when a customer needs the highest possible lift capability. A partially reusable mission can recover selected hardware while preserving more payload performance. Full reusability can prioritise recurring launch economics and flight cadence.

EtherealX also says the upper stage is being designed to support as many as 16 orbital insertions during a mission. The goal is to deploy different payloads into different target orbits rather than merely releasing every satellite along one common trajectory.

Such an architecture could be useful for satellite constellations, dedicated customer missions and complex rideshare flights.

The company is also exploring point-to-point cargo transportation as a future application, although this remains a longer-term concept rather than an operational service.

Stallion: The Booster Engine

Razor Crest’s first stage is planned around the Stallion liquid rocket engine.

The current design calls for nine Stallion engines on the booster. EtherealX has described the latest engine at about 1.2 meganewtons of thrust, with a sea-level specific impulse of roughly 306 seconds. The engine uses a gas-generator architecture.

Developing a reusable booster engine requires more than producing high thrust.

A reusable engine must eventually demonstrate reliable ignition, stable combustion, predictable throttling, structural durability and repeatability across multiple operating cycles. Flight qualification therefore requires extensive ground testing before recovery can even become the central question.

For an Indian private company, developing an engine of this class also means building knowledge in turbomachinery, combustion chambers, valves, controls, cryogenic fluid management, manufacturing and engine-test infrastructure.

That industrial knowledge can spread well beyond a single rocket programme.

Pegasus: Propulsion for the Returning Upper Stage

The upper stage uses a different engine called Pegasus.

EtherealX currently describes Pegasus as an approximately 80-kilonewton-class engine. The planned Razor Crest upper stage would use a cluster of 15 Pegasus engines.

The company has reported a vacuum specific impulse of about 323 seconds and describes the propulsion architecture as using a proprietary Full-Flow Segregated Cooling Cycle.

One notable development is the use of an additively manufactured turbopump assembly for Pegasus. EtherealX has said the component was developed in-house for its upper-stage propulsion system.

Additive manufacturing can reduce the number of individual components in complicated propulsion assemblies. It can also enable internal geometries that are difficult to manufacture conventionally.

For India’s growing space manufacturing sector, such work is significant because reusable launch vehicles require far more than rocket assembly. They require domestic capability in metallurgy, precision manufacturing, valves, pumps, tanks, thermal systems, electronics and high-performance materials.

Building Rocket Infrastructure in India

EtherealX is also investing in the physical infrastructure required to test these systems.

Its current website identifies a 700,000-square-foot privately owned rocket-testing facility at Cuddalore in Tamil Nadu. The company calls the facility Base 001.

The facility is intended to support propulsion development and upper-stage qualification work.

EtherealX has also secured approximately 150 acres in Andhra Pradesh for a larger manufacturing and testing campus. The company has said this site will support integrated engine and stage testing as the programme matures.

This infrastructure could eventually become nearly as important as the rocket.

Launch vehicles cannot be developed through design software alone. Engines must fire repeatedly. Tanks must undergo pressure testing. Structures must experience representative loads. Propulsion systems must operate together. Guidance, avionics and flight software must then survive integrated testing.

Building these facilities within India helps retain both the hardware and the engineering knowledge required to reproduce it.

An Indian Supply Chain Is Beginning to Take Shape

Razor Crest is also drawing established Indian engineering companies into the programme.

In 2026, INOX India disclosed that its Kalol facility had manufactured a liquid-oxygen tank for Razor Crest Mk-1. EtherealX representatives subsequently visited the facility as part of the collaboration.

This is an important feature of advanced aerospace programmes.

A rocket company does not have to manufacture every bolt itself to create domestic capability. What matters is whether increasingly difficult components can be engineered and produced through a reliable national supply chain.

Reusable launch vehicles can create demand for high-value Indian manufacturing in pressure vessels, cryogenic systems, precision machining, composites, electronics, sensors, valves, pumps and metal additive manufacturing.

The value of a programme such as Razor Crest could therefore extend beyond EtherealX itself.

Funding a Capital-Intensive Space Programme

Reusable orbital launch systems require substantial capital before commercial revenue begins.

EtherealX raised $5 million in seed funding in 2024. It followed that with an oversubscribed $20.5 million Series A round announced in January 2026. TDK Ventures and BIG Capital led the round, with participation from Accel, Prosus, YourNest, BlueHill, Campus Fund and Riceberg Ventures.

The Series A lifted the company’s reported valuation to approximately $80.5 million.

TDK Ventures separately announced an investment of up to $5 million in the round. It said the investment would support development of Razor Crest and the wider reusable-launch programme.

The significance lies not only in the amount raised.

Launch vehicles sit among the hardest products for a startup to finance. Revenue arrives late, testing can destroy expensive hardware, schedules frequently move and a single flight anomaly can require extensive redesign.

Private capital entering Indian launch-vehicle development therefore represents a different class of investment from funding conventional software startups.

Customers Are Being Approached Before the First Flight

EtherealX is also attempting to establish commercial demand while the launcher remains under development.

In early 2026, CEO Manu Nair said the company had signed launch memoranda of understanding worth roughly $130 million with prospective customers. These included Japan’s Space BD and Taiwan’s space agency TASA.

These agreements should not be treated as completed launch revenue. They represent early commercial interest ahead of successful demonstration and qualification.

Nevertheless, international interest matters.

An Indian medium-lift launcher cannot depend only on domestic missions if it hopes to maintain a high flight rate. Global satellite operators, constellations and institutional customers would have to form part of the addressable market.

Reusability Is Ultimately About Cadence

Reusable rockets are often discussed mainly in terms of price. Cadence may prove equally important.

A disposable launch vehicle requires another major piece of flight hardware for every mission. A reusable launcher attempts to convert the rocket itself into an operational asset.

EtherealX says it is designing RCM1 around a 72-to-96-hour turnaround objective after recovery. This remains a target rather than an operationally demonstrated capability.

If such turnaround times can eventually be achieved, a smaller fleet could theoretically support multiple launches without manufacturing a complete replacement vehicle each time.

This changes what a launch company must optimise.

Factories remain important, but maintenance engineering, inspection, refurbishment, ground operations and rapid mission integration become central to the business model.

Part of a Much Larger Change in Indian Space Policy

EtherealX is developing its rocket during a major transformation of India’s space industry.

The Indian Space Policy 2023 explicitly permits non-government entities to manufacture and operate launch vehicles. It also allows private companies to develop reusable and recoverable space-transportation technologies and establish launch infrastructure, subject to the required authorisations.

That policy framework is important for companies attempting end-to-end launch systems.

The government said in January 2026 that around 1,050 private companies had listed their capabilities on the IN-SPACe Digital Platform across different space activities.

India is targeting a space economy of around $44 billion by 2033, with the launch segment expected to contribute approximately $3.5 billion.

Reusable commercial launch systems could become one route towards that objective.

Global Recognition for an Indian Deep-Tech Company

Ethereal Exploration Guild was also selected as one of the World Economic Forum’s 2026 Technology Pioneers.

The Forum described the company as developing reusable medium-lift launch vehicles for cost-efficient access to orbit. India had nine companies in the 2026 Technology Pioneers cohort.

Recognition does not validate a rocket’s flight performance. Only actual testing and missions can do that.

It does, however, illustrate growing international attention towards India’s privately developed deep-technology companies.

The Hardest Milestones Are Still Ahead

Razor Crest remains an ambitious engineering programme rather than an operational launcher.

In January 2026, EtherealX was preparing for major hot-fire testing of the Pegasus and Stallion propulsion systems. At that time, the company was targeting a technology-demonstration flight in November–December 2027, followed by commercial missions towards the end of 2028.

As of August 2026, publicly available material does not yet establish that the complete Razor Crest vehicle has flown or that two-stage recovery has been demonstrated.

That distinction matters.

The next major milestones involve propulsion qualification, clustered engine testing, integrated stage testing, guidance and control validation, thermal protection, stage recovery and eventually orbital demonstration.

Upper-stage reuse will be especially demanding.

Even after the first successful recovery, EtherealX would still need to prove that recovered hardware can be inspected, refurbished and relaunched economically. True reusability is demonstrated not when a rocket lands once, but when the same hardware can fly repeatedly with acceptable cost and reliability.

A New Layer of Make in India

EtherealX represents a more demanding stage of India’s Make in India journey.

The first objective of industrial self-reliance is often to manufacture products domestically. The next is to design critical systems in India. A still higher level involves creating new architectures, developing indigenous intellectual property and competing internationally on performance rather than manufacturing cost alone.

Reusable orbital transportation belongs to that third category.

Razor Crest requires propulsion, turbomachinery, cryogenic tanks, avionics, structures, thermal engineering, additive manufacturing, test infrastructure, flight software and recovery systems to work as one machine.

Each capability strengthens India’s wider aerospace ecosystem.

The company could also create another important layer between India’s satellite startups and the global launch market. Indian companies are already building spacecraft, propulsion systems, sensors and orbital services. Indigenous commercial launch capacity can connect these technologies to orbit through a more complete domestic value chain.

From Building Rockets to Building Space Transportation

EtherealX’s most interesting idea is therefore larger than one launcher.

Razor Crest is being designed around the assumption that a rocket should increasingly behave like transportation infrastructure rather than disposable hardware.

The company wants both stages back. It wants them turned around quickly. It wants one mission to serve multiple orbital destinations. And it wants reusable hardware to change the economics of medium-lift launch.

Those goals remain to be proven in flight.

But the engineering infrastructure is taking physical form in India. Engines are being developed. Test facilities are being established. Indian companies are entering the supply chain. International customers are being pursued, and private capital is funding increasingly difficult aerospace work.

With the success of EtherealX India would make wider gains in its space aspirations.

It would possess an Indian-designed commercial system built around recovering, servicing and repeatedly flying orbital-class hardware.

That would represent an important transition for Make in India—from building rockets to building the infrastructure for routine access to space.

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References

1. Ethereal Exploration Guild / EtherealX — Official Website Razor Crest Mk-1, reusability, launch services, Base 001 and turnaround targets https://www.etherealx.space/ 2. TechCrunch — 15 January 2026 “Indian SpaceX rival EtherealX hits 5x valuation as it readies engine tests” Funding, Pegasus and Stallion specifications, vehicle configurations, testing infrastructure, customer MoUs and development timeline

Indian SpaceX rival EtherealX hits 5x valuation as it readies engine tests

3. TDK Ventures — 15 January 2026 “TDK Ventures invests in Ethereal Exploration Guild’s Series A to help pioneer rocket cargo and the future of reusable medium-lift space launches”

TDK Ventures invests in Ethereal Exploration Guild’s series A to help pioneer rocket cargo and the future of reusable medium-lift space launches

4. TDK Ventures — 2 February 2026 “Why We Invested in The Guild for the Future of Medium-lift Space Launch”

Why We Invested in The Guild for the Future of Medium-lift Space Launch

5. World Economic Forum — 10 June 2026 2026 Technology Pioneers https://www.weforum.org/press/2026/06/new-technology-pioneers-are-building-the-infrastructure-for-the-next-era-of-ai-96a8d3e248/ 6. IN-SPACe — Indian Space Policy 2023 Private-sector launch vehicles, reusable transportation systems and launch infrastructure https://www.inspace.gov.in/ 7. Press Information Bureau / Department of Space — 29 January 2026 Private Sector Participation in Space Economy India’s space-economy and private-sector development targets https://www.pib.gov.in/PressReleasePage.aspx?PRID=2220035 8. Press Information Bureau / Department of Space — 23 July 2026 India’s Space Launch Programme $44-billion Indian space-economy target for 2033 https://www.pib.gov.in/PressReleasePage.aspx?PRID=2288300 9. Press Information Bureau / Department of Space — 12 February 2026 Expanding Satellite Launch Services Target of approximately $3.5 billion from India’s launch segment by 2033 https://www.pib.gov.in/PressReleasePage.aspx?PRID=2227023

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