Interview, Fireside Chat
Inside The Startup Building Reusable Rockets
- Stokes Space is developing fully rapidly reusable two-stage rockets (Nova) designed to return both the first stage and the second stage capsule to Earth, aiming to achieve aircraft-like reusability and drastically lower launch costs.
- Market Context: The industry currently averages approximately 150 commercial launches per year, with availability heavily constrained by Starlink's dominance; Stokes targets a future where ubiquitous access enables diverse new verticals and applications.
- Technical Architecture:
- Stage 1 (Nova First Stage): Utilizes high fuel-efficiency engines to return and land at the launch site or downrange; this stage has historically achieved the industry's "breakthrough" in reusability.
- Stage 2 (Andromeda Capsule): Designed to survive re-entry at 17,000 mph and temperatures exceeding 2,700°F using a custom heat shield featuring cold liquid hydrogen flowing through a heat exchanger.
- Landing Mechanism: Employs 24 small thrusters to control descent angle and execute precise landings for the second stage, which is traditionally discarded on all current missions.
- Founders & Origins:
- Founded in September 2019 by Andy and Tom, former jet propulsion engineers at Blue Origin, who left their jobs despite the high personal risk (one founder had a three-month-old infant at the time).
- The team initially operated out of a shipping container test cell in Tom's backyard, building a pressure-fed gaseous hydrogen/liquid oxygen thruster to demonstrate viability to early investors.
- Financial Milestones:
- The company has raised approximately $990 million to date to support hardware development, manufacturing, and launch infrastructure.
- Early fundraising was significantly impacted by the 2020 pandemic, which shut down the market; the team eventually joined Y Combinator (YC) to navigate the transition from hardware engineering to venture fundraising.
- Operational Strategy:
- Vertical Integration: The company builds all rocket components in-house (avionics, structures, engines, additive manufacturing) to minimize iteration cycles; internal part manufacturing reduces changeover times from weeks to one to two days.
- Software Infrastructure: Proprietary software platform "BoltLine" manages factory operations, maintenance logging, and AI-driven data abstraction to bridge the gap between garage prototyping and FAA-regulated flight operations.
- Facilities & Infrastructure:
- Kent, Washington: A 168,000 square foot factory designed to produce seven vehicles per year, housing engine assembly, additive manufacturing, and structures.
- Moses Lake, Washington: A site for structural qualification testing, including cryogenic conditions.
- Cape Canaveral, Florida: Construction is underway at Historic Complex 14 (the site of the first American orbital flight in 1962) for the primary launch site.
- Development Timeline & Milestones:
- 2022: Completed first full engine test.
- 2024: Completed facility relocation and continued structural qualification builds.
- Current Status: First orbital launch is planned for later this year, contingent on completing first and second stage engine qualification and avionics hardware-in-the-loop testing.
- Forward-Looking Vision:
- The founders aim for a future where the Nova rocket can fly daily, fundamentally altering the economics of space travel and enabling a new "iPhone app store" moment for space applications.
- The team believes that focusing on reusability from day one is the only viable path to scaling flight frequency without proportional increases in factory and test facility infrastructure.