After more than two decades in military aviation, Ratandeep Tripathi is bringing a very different discipline to India’s emerging eVTOL industry: design for the day everything goes wrong.
For Ratandeep Tripathi, aviation is not about the perfect flight. It is about what happens when conditions are anything but perfect.
After more than 24 years in military aviation, the CEO and MD of Vjaitra Air Mobility brings that philosophy to one of India’s more ambitious deep-tech bets: hydrogen-electric vertical take-off and landing aircraft. From a Noida base, Vjaitra is pursuing patents, international partnerships, and commercial opportunities stretching from underserved Indian communities to markets in Europe and the Gulf. Tripathi believes India’s opportunity is bigger than building aircraft. It is about creating the technology, infrastructure, and engineering capability to make a new kind of aviation possible.
What did 24+ years in military aviation teach you that a typical eVTOL startup elsewhere might be missing?
The Air Force teaches you to design for the mission’s worst day, not its best one. In a commercial pitch deck, you talk about range, payload, and cabin comfort. In uniform, you’re taught to ask: what happens when this aircraft has to operate from an unprepared strip, in dust, at altitude, with no ground infrastructure, and no room for a maintenance error. That discipline builds for degraded conditions first, then adds convenience is the biggest thing I see missing in eVTOL startups that come out of a pure consumer-tech or automotive background. They optimize for the demo flight. We optimize for the day the weather doesn’t cooperate and the landing zone isn’t a helipad.
The second thing is systems thinking under constraint. Military aviation forces you to treat the airframe, powerplant, human factors, and logistics chain as one integrated problem, because in the field there’s no separate team to bail you out. That’s exactly the mindset hydrogen-electric VTOL needs right now nobody has the luxury of treating propulsion, structure, and certification as three unrelated workstreams.
And third: an obsession with certification and airworthiness as a design input from day one, not a paperwork exercise bolted on at the end. A lot of eVTOL programs globally have had to redesign expensive hardware because they treated regulators as an afterthought. We didn’t have that option; we built the regulatory pathway into the architecture from the first sketch.
What did it take for a startup out of Noida (which is not an established aerospace hub, to say the least) to sign LOIs worth over $300 million and hold full-scale VTOL patents most Indian aerospace companies haven’t attempted?
Credibility in deep-tech isn’t handed out by geography, it’s earned through evidence. We didn’t try to compensate for not being in an aerospace cluster by talking bigger, we compensated by showing up with things that are hard to fake: a granted design patent, incubation and technical validation from IIT Delhi and IIM Lucknow’s innovation centres, and airframes that had actually flown or been engineered to a level of detail most early-stage teams skip. When a defence buyer or an infrastructure partner looks at an LOI request, they’re not asking where your office is. They’re asking whether the engineering is real and whether the team can execute against a certification timeline. We made sure the answer to both was demonstrably yes before we asked anyone to sign anything.
The other piece is that Noida, for all that it isn’t Bengaluru or Toulouse, sits inside the NCR ecosystem close to policy makers, close to DPIIT, close to the institutions that were willing to back deep-tech early. We used that proximity aggressively rather than treating our location as a disadvantage to overcome. Being taken seriously that fast wasn’t about optics it was about front-loading the hard, unglamorous engineering and IP work before the fundraising conversation even started, so that by the time we were in the room, we weren’t selling a vision, we were presenting a program.
Is India genuinely a lead market for hydrogen aviation, or mainly the manufacturing base for an export-first business targeting Europe and the Middle East?
India is both, but in different roles, and being clear-eyed about that distinction is exactly the discipline this business needs. India is where the manufacturing economics work, where we have access to the National Green Hydrogen Mission and programs like GAIL Pankh, a strategic partnership with Jio-BP (Reliance group of Company) that de-risk the supply chain for hydrogen infrastructure, and where the underserved-connectivity problem is large enough to eventually become a genuine lead market on its own terms.
Hydrogen aviation specifically needs a domestic production and handling ecosystem before it can scale commercially, you can’t fly hydrogen-electric aircraft on imported fuel economics. That’s exactly what the Green Hydrogen Mission is meant to build over the next several years: electrolyser capacity, storage, and distribution infrastructure. We’re structuring our R&D funding to plug directly into that pipeline, so that as India’s green hydrogen production base matures, we’re one of the first aviation applications ready to consume it not retrofitting an aircraft to a fuel source years after the fact.
But the near-term commercial pull the willingness to pay a premium for hydrogen-electric VTOL at the volumes that make a program bankable is currently stronger in Europe and the Gulf, where regulatory frameworks for advanced air mobility are further along and where sovereign infrastructure ambition is actively funding this category.
That’s why we’re building our second base in the DIFC in Dubai . Not because India isn’t important, but because it lets us de-risk the business by earning revenue in markets that are ready to pay for certified hydrogen aviation sooner, while India matures into the volume market it’s positioned to become over the next decade. Manufacturing base today, genuine lead market on a longer horizon. I don’t think those are in tension, I think that’s the correct sequencing.
Is Vjaitra’s real opportunity urban air mobility, or last-mile connectivity for the India that doesn’t have four-lane highways yet?
Honestly, I think urban air taxis get the headlines, but last-mile connectivity is the bigger and more durable market. And it’s the one we designed for first.
A huge percentage of India still doesn’t have reliable road access to healthcare, emergency response, or basic freight movement. That’s not a niche use case, that’s tens of millions of people. An aircraft that can operate without a four-lane highway or a purpose-built vertiport underneath it is solving a structural problem, not a convenience problem.
Urban air mobility is a real market and we’re not walking away from it, but it’s a market that depends on dense infrastructure, congested airspace management, and a level of certification maturity that’s still years out in most geographies, including India. Connectivity for underserved regions is available now, has less infrastructure dependency, and frankly has a stronger moral case for why this technology should exist at all. If I had to bet on where Vjaitra’s platforms create the most lasting value, it’s not ferrying people between helipads in a metro. It’s putting a hospital, a market, or an emergency response capability within reach of a village that currently has neither.
Does Vjaitra feel like proof that deep-tech hardware in India is finally getting funded and taken seriously, or are you still fighting that perception daily?
Both, and I’d be doing the ecosystem a disservice if I claimed otherwise. There’s real momentum; DPIIT recognition, incubation from institutions like IIT Delhi and IIM Lucknow, and government programs that are finally underwriting the kind of capital-intensive R&D deep-tech hardware actually requires.
The Research Development and Innovation Scheme is a good example. It’s designed to give companies like ours long-tenure, low-cost capital for exactly the kind of high-risk aircraft R&D that traditional VC and bank financing were never built for. Paired with the Green Hydrogen Mission on the fuel and infrastructure side, that’s two separate pieces of national policy actively de-risking a hydrogen aircraft program in a way that simply wasn’t available five years ago. That’s genuine progress, and I don’t want to undersell it.
But I still fight the perception every week. Hardware timelines are longer, capital-intensive, and harder to demo than software, and there’s still a reflexive pattern-matching in a lot of Indian capital toward faster, more familiar return profiles. What convinces people isn’t a pitch;, it’s proof points: a granted patent, LOIs from serious counterparties, a functioning relationship with regulators, and platforms that have actually been engineered and tested, not just rendered.
Every one of those is a brick in the wall against the “India doesn’t do hardware” assumption. I think we’re part of the generation that’s supposed to make that assumption obsolete but obsolete doesn’t happen because you announce it. It happens because you keep shipping engineering nobody can dismiss.
