Byline: Gregg Kell | Spotlight on Startups
Every orbital vehicle development program eventually confronts the same problem. Simulation is valuable. Ground testing is essential. But neither replicates what actually happens when hardware leaves the atmosphere, encounters real aerodynamic forces, generates real thermal loads, and has to perform in a real flight environment. The only way to know if a system works in space is to fly it there.
For most development teams, that test has historically meant one of two choices: launch on an orbital vehicle at enormous cost and risk, or wait. Neither answer serves programs that need to iterate rapidly, recover their hardware, make changes, and fly again.
That gap — the space between ground test and orbital commitment — is exactly where Exos Aerospace operates. And John Quinn, the company’s Co-Founder and CEO, argues it is one of the most underserved and consequential positions in the commercial space industry.
“The real need is not one spectacular flight,” Quinn says. “The real need is a flight test environment customers can plan around, learn from, and return to as their systems mature.”
Exos Aerospace, based in Greenville, Texas and exhibiting at Space Tech Expo USA 2026 in Anaheim, is one of only three companies in the United States licensed by the FAA to operate reusable rockets — the other two being SpaceX and Blue Origin. That licensing distinction is not incidental. It is the structural foundation of everything Exos does, and it is the reason the company’s customer base spans orbital vehicle developers, defense programs, university research teams, and international space agencies.
The Flight Test Gap That Orbital Development Programs Can’t Afford to Ignore
The commercial space industry has produced extraordinary advances in launch vehicle technology over the past decade. But a structural problem has followed that progress upward: the development infrastructure needed to mature the systems going aboard those vehicles has not kept pace.
The suborbital flight market grew from $0.81 billion in 2024 to $0.93 billion in 2025, advancing at a 15.4% CAGR, driven by rising defense investment in reentry and hypersonic testing, growing demand for microgravity research, and the expanding ecosystem of orbital vehicle developers who need a lower-risk step before committing to full orbital programs. The market is projected to reach $7.1 billion by 2033, registering an 18.4% CAGR — numbers that reflect a structural shift in how the industry thinks about the development pathway from concept to orbit.
The driver of that shift is a recognition Quinn has spent years articulating: orbital launch is a major commitment, both financially and technically, and a lot of teams need a step in between.
“Orbital launch is a major commitment — both financially and technically. A lot of teams need a step in between where they can validate hardware, collect flight data, recover the payload, make changes, and fly again.” — John Quinn
For programs working on avionics, guidance and control, propulsion systems, reentry technologies, sensors, materials, or research payloads, the value of suborbital flight testing is not only altitude. It is disciplined operations, relevant flight conditions, payload recovery, faster iteration, and a provider who understands what it takes to turn a test campaign into usable data.
The alternative — flying critical systems for the first time on a high-value orbital vehicle — is a risk posture that the industry’s increasingly crowded satellite programs, defense programs, and commercial operators can no longer afford to accept as the default.
A Founder Forged in Six Years of Reusable Rocket Operations
Quinn’s path to the CEO role at Exos Aerospace is itself a proof of concept for the company’s operational philosophy. He co-founded Exos and served as COO for six years before assuming the chief executive position — a tenure that put him close to every part of the operation: vehicle development, launch execution, customer integration, range coordination, recovery, and the failure modes that never appear cleanly in a simulation.
“Six years as COO put me close to every part of the operation. That experience shaped how I think about the role of a flight test provider. The industry does not just need access to space as an idea. It needs repeatable access to real flight environments, on a timeline that supports actual development.” — John Quinn
That experience produced a specific conviction about what reliability, turnaround, integration discipline, and operational cadence mean in practice. The SARGE and BLK3 vehicles are designed for rapid turnaround — typically two days between flights — giving customers a repeatable operational platform rather than a one-shot test event.
The broader mission, as captured in the company tagline, is straightforward: making SPACE available. Sustained, affordable access to the flight environment, Quinn argues, is what the next generation of space systems needs to develop. Not a single demonstration. Not a press release. A platform customers can return to.
The BLK3, SARGE, and the FAA License That Only Three Companies in America Hold
The regulatory barrier at the center of Exos Aerospace’s competitive position is worth examining carefully. FAA licensing for reusable rocket operations is not a checkbox — it is a multi-year process involving extensive technical review, safety case development, and operational compliance that most aerospace startups never complete. The fact that only SpaceX and Blue Origin hold the same license as Exos is a signal of the operational maturity the company has built.
The SARGE and BLK3 vehicles are the operational expression of that maturity. BLK3 is capable of carrying payloads of up to 135 kg beyond 100 km — past the Kármán line — with payload recovery following reentry. Customers can fly, recover hardware, inspect, modify, and fly again on a timeline measured in days rather than months.
Exos is also under contract with the U.S. Department of Defense to develop the flight vehicle for an RDRE — Rotating Detonation Rocket Engine — flight demonstration, reflecting the company’s role in supporting advanced propulsion flight testing where repeatability, speed, and practical execution are the evaluation criteria.
The capabilities statement available on the Exos site documents the full scope: wet lease launch services, integrated composite structures, LOX/methane propulsion with extensive in-flight relight heritage, and a fractional parts count architecture designed to reduce inspection burden and support repeatable reuse.
“Reliability, turnaround, integration discipline, and operational cadence matter as much as raw vehicle performance.” — John Quinn
Type V Composite Structures and the Scorpius Partnership
One of the more technically distinctive aspects of Exos Aerospace’s platform is its partnership with — and ownership position in — Scorpius Space Launch Company, the developer of Type V linerless composite tank and integrated pressurized structure technology.
The technology’s significance for Exos is both operational and strategic. As the company flew and recovered reusable vehicles, the structural demands of repeated flight through max Q and recovery became clear. Aluminum structures experience material fatigue over repeated high-load flight cycles — a consequence that matters when the goal is not a single demonstration but a vehicle that can fly, be recovered, inspected, improved, and flown again.
“As we flew and recovered reusable vehicles, we saw the structural demands that come from repeated flight through max Q and recovery. Aluminum structures can experience material fatigue over repeated high-load flight cycles, and that matters when your goal is a vehicle that can fly, be recovered, inspected, improved, and flown again.” — John Quinn
Scorpius’ Type V linerless composite tank technology has already been demonstrated in a lunar lander application — a credentialing data point that extends well beyond the lab. For BLK3, the value is weight reduction, structural simplification, fewer interfaces, and a path toward more repeatable vehicle operations.
The broader implication extends to orbital and cislunar programs. Integrated composite pressurized structures are relevant to vehicles, transfer stages, propulsion systems, and spacecraft architectures where mass, reliability, manufacturability, and long-duration performance all matter. When combined with reusable flight test operations, the technology creates a more complete development pathway for programs that need to mature hardware before orbit or deeper-space missions.
The Wet Lease Model: Building Reusable Launch Capability From the Outside In
Among Exos Aerospace’s service offerings, the wet lease model is the one that most directly addresses the structural gap in how emerging space programs, universities, and international partners access reusable flight capability.
In practice, the model works as follows: a customer purchases a reusable suborbital rocket. Exos supports the vehicle, launch operations, integration, training, and early flight campaigns while the customer’s team learns the system. Over time, Exos trains their personnel to take on more of the operational responsibility — and eventually operate the vehicle themselves.
“The wet lease model is designed for organizations that want to own a reusable suborbital vehicle, but do not want to start by building the full operational capability from zero.” — John Quinn
The model is specifically designed for universities, research institutions, government programs, and countries that have payload demand but no dedicated suborbital vehicle. For universities, it creates a hands-on learning platform where students and researchers move beyond classroom theory and gain real experience with reusable flight operations, integration, launch preparation, recovery, inspection, and data review.
For countries or regional space programs, it provides a practical path into reusable flight capability without requiring a clean-sheet vehicle development program. They can start with a proven platform, fly their own payloads, build internal expertise, and grow toward greater operational independence.
The Montana Spaceport and Test Range is cited by Quinn as an example of the broader framework: reusable flight infrastructure can support regional spaceport development, research programs, workforce training, and recurring payload demand in a way that is far more practical than every organization trying to build a vehicle and operations team from scratch.
Pricing for launch slots, flight campaigns, and wet lease programs is available on the Exos site — an unusual degree of pricing transparency for a launch services provider, and itself a signal of the company’s commitment to making SPACE available beyond the major primes and well-capitalized commercial operators.
Frequently Asked Questions
What does Exos Aerospace do? Exos Aerospace is one of only three FAA-licensed reusable suborbital launch operators in the United States, alongside SpaceX and Blue Origin. The company provides repeatable, recoverable suborbital flight test services for orbital vehicle developers, defense programs, university research teams, and international space agencies. Its SARGE and BLK3 vehicles are designed for rapid turnaround — typically two days between flights — giving customers a repeatable platform for hardware validation, flight data collection, and iterative development.
What is a wet lease launch service and who is it for? A wet lease is a model in which Exos Aerospace provides and operates the reusable launch vehicle, reducing integration burden for the customer. The model is designed for universities, research institutions, government programs, and international space agencies that have payloads to fly but lack the full operational infrastructure to run their own launch campaigns. Exos trains the customer’s team over time, enabling them to eventually operate the vehicle themselves.
How is suborbital flight testing different from orbital launch for hardware development? Suborbital flight testing provides real flight environments — altitude, aerodynamic forces, thermal loads, microgravity, and reentry conditions — at a fraction of the cost and risk of orbital launch. Unlike orbital launch, suborbital vehicles recover the payload, allowing teams to inspect hardware, make changes, and fly again. For programs validating avionics, guidance and control systems, propulsion subsystems, reentry technologies, or research payloads, suborbital flight testing provides essential data that simulation and ground testing cannot replicate.
What is Type V composite pressurized structure technology and why does it matter for reusable rockets? Type V linerless composite tank technology, developed by Scorpius Space Launch Company — in which Exos holds an ownership position — eliminates the traditional metal liner from composite tanks, reducing weight, simplifying structure, and reducing the parts count. For reusable vehicles that fly through max Q repeatedly, the fatigue resistance of composite structures compared to aluminum is operationally significant. The technology has been demonstrated in a lunar lander application. Learn more about Exos capabilities.
Is Exos Aerospace involved in defense programs? Yes. Exos is under contract with the U.S. Department of Defense to develop the flight vehicle for an RDRE — Rotating Detonation Rocket Engine — flight demonstration. The company’s Defense Unit has also been engaged in a hypersonic reusable launch vehicle prototype contract with the USAF and MDA. Exos’s reusable platforms are designed to support defense flight test programs where repeatability, schedule, and practical subsystem validation are the primary evaluation criteria.
How do I schedule a flight campaign or launch slot with Exos Aerospace? Flight campaign scheduling and launch slot pricing are available on the Exos Aerospace website. The company supports payloads of up to 135 kg to beyond 100 km altitude, with payload recovery following reentry. Exos also supports university research programs through subscription models tailored to academic customers, and has previously partnered with institutions including Purdue University and the University of Central Florida.
The Open Question: Can a Three-Company FAA License Club Build the Flight Test Infrastructure the Orbital Era Actually Needs?
The regulatory barrier protecting Exos Aerospace’s market position is real and durable. FAA licensing for reusable suborbital operations is not easily replicated, and the operational experience embedded in six-plus years of flying and recovering vehicles at the Greenville, Texas facility represents institutional knowledge that cannot be purchased or shortcut.
The reusable launch vehicles market is valued at $7.83 billion in 2025 and is projected to reach $28.25 billion by 2035, growing at a CAGR of 13.80% — growth that will produce a growing pipeline of orbital development programs, each of which faces the same hardware validation problem Quinn has spent a decade solving. Mordor Intelligence
The open question is not whether the market for repeatable, recoverable suborbital flight test services will grow. It will. The question is whether Exos Aerospace can scale its operational cadence — vehicles, range access, customer integration bandwidth — fast enough to serve the pipeline that the orbital economy is producing. The wet lease model, the university partnerships, the international expansion through Italy and Brazil, and the Montana Spaceport framework are all elements of a distribution strategy that extends the Exos platform beyond a single launch site.
“Building and flying reusable vehicles taught me that reliability, turnaround, integration discipline, and operational cadence matter as much as raw vehicle performance. The real need is a flight test environment customers can plan around, learn from, and return to as their systems mature.” — John Quinn
Making SPACE available is a tagline. It is also a strategy, and Exos Aerospace is the only company in its license class actively building the infrastructure to deliver on it at scale.
About John Quinn John Quinn is the Co-Founder and CEO of Exos Aerospace, one of only three FAA-licensed reusable suborbital launch operators in the United States. He previously served as COO of Exos for six years, overseeing vehicle development, launch operations, and customer integration across the SARGE and BLK3 programs. Exos Aerospace is based in Greenville, TX and operates launch campaigns from its Texas facility and partner ranges.
Spotlight on Startups (https://SpotlightOnStartups.com) publishes founder profiles, market analysis, and company spotlights for operators, investors, and buyers navigating emerging sectors. This profile is part of the Founder Spotlight Studio series.