Stoke Space and full reusability goals

For the last decade, the word “reusability” in rocketry has meant one thing: SpaceX. The Falcon 9 lands its first stage, you’ve seen the livestreams, and the industry has spent years trying to copy that trick. But here’s the thing—Falcon 9 is only partially reusable. The upper stage still burns up in the atmosphere, and every new mission requires throwing away a significant chunk of expensive hardware. A handful of startups have promised “full reusability” like a used car salesman swearing the engine is fine. One company, however, is actually building the hardware and testing it right now. That company is Stoke Space, and their approach is weird enough that it just might work.

Stoke Space was founded in 2019 by two former Blue Origin engineers, and they operate out of a facility in Kent, Washington. They’re not trying to build a giant rocket for Mars colonization or a heavy lifter for massive satellite constellations. They’re aiming for something deceptively simple: a two-stage-to-orbit rocket where every single piece—first stage and second stage—comes back to Earth, lands, refuels, and flies again. No expended fairings, no thrown-away upper stages, no parachutes into the ocean. Just full, rapid, no-nonsense reusability.

The core technical challenge here is the second stage. A first stage returning to land is well-understood now. But an upper stage reenters from orbital velocity, which means it hits the atmosphere at over 17,000 miles per hour. That generates brutal heat and requires a heat shield. Traditional heat shields are heavy, ablative, and one-use. Stoke Space decided that was unacceptable. Instead, they developed a regeneratively cooled heat shield. That means the nose cone and entire outer skin of their upper stage act like a radiator. Liquid oxygen and methane run through channels in the metal skin, actively cooling the surface during reentry. This is the same principle used inside rocket engine combustion chambers, but Stoke scaled it up to cover the whole vehicle. The result is a lightweight, completely reusable upper stage that doesn’t char away or need replacement. They tested this heat shield technology in a static fire test of their upper stage engine—called the “Nozzle” engine—and it held up. That’s not a PowerPoint slide. That’s hardware that fired on a test stand.

The first stage is equally unconventional. Stoke isn’t using the standard upright landing legs you see on Falcon 9. Instead, they built a rocket with an annular aerospike engine—a design that hasn’t flown on a production orbital rocket before. An aerospike engine is shaped like a bell cut in half, with the exhaust expanding against the atmosphere as it rises. This gives better efficiency at multiple altitudes without a heavy nozzle extension. The first stage also lands on a single, large, circular landing gear that wraps around the base, allowing the rocket to set down on unprepared surfaces. No landing pads needed, no complex leg deployment. It’s rugged, simple, and designed for fast turnaround.

Here’s why this matters for someone who just wants to follow space without the hype: Stoke Space is currently testing a prototype called “Hopper2” at their facility in Moses Lake, Washington. Hopper2 is a subscale vehicle that performs vertical takeoff and vertical landing tests. It’s already flown several hops, and in footage you can see it hover, translate sideways, and land precisely. This isn’t a decade-away concept. This is a company that secured $100 million in Series B funding in 2023, has a NASA contract for testing, and plans to launch their first orbital vehicle—the “Nova” rocket—by 2025. The timeline is aggressive, but they’re burning hardware, not just slides.

The bigger picture for casual space fans is that full reusability changes the cost per kilogram to orbit drastically. If Stoke can fly a rocket with zero hardware loss per mission, they can undercut every current launcher not named Starship. They’re targeting a payload capacity of about 5 metric tons to low Earth orbit—right in the sweet spot for small satellites, constellation replenishment, and government missions. It’s not a super heavy lifter, but it doesn’t need to be. A fully reusable rocket that flies weekly is more disruptive than a giant rocket that flies twice a year.

The skeptics will point out that aerospike engines are notoriously tricky to tune, that regeneratively cooled skins have never been tried at this scale, and that small startups falter during the leap from hops to orbit. All fair points. But Stoke Space is not talking about theory. They have fired engines, flown test vehicles, and released telemetry. In a world where most new rockets are copies of old designs, Stoke is doing something genuinely different. They are building the kind of rocket that would make a 21st-century engineer grin and a 20th-century one call impossible. Right now, it’s in testing. Watch it.