Inside The Startup Building Reusable Rockets (16 min)
- Release date: 2026-01-08
- Listen on Spotify: Open episode
- Episode description:
Stoke Space is racing to build the world's first fully reusable rockets that can launch, survive reentry, and fly again and again. In this episode of Hard Tech, YC’s Aaron Epstein sits down with Stoke Space co-founders Andy Lapsa and Tom Feldman to find out why they chose to take on one of the hardest problems in rocket science, how an obsession with efficiency gives them an edge, and what full reusability could unlock for the future of spaceflight.Apply to Y Combinator: https://www.ycombinator.com/applyWork at a startup: https://www.ycombinator.com/jobs
Summary
- 🚀 Full Reusability Revolution: Stoke Space builds Nova (first stage) and Andromeda (reusable upper stage with hydrogen-cooled heat shield) for aircraft-like turnaround, slashing costs and enabling 150+ annual launches to explode.
- 👨🔧 Garage-to-Gigafactory Founders: Ex-Blue Origin engineers bootstrapped backyard engine tests in shipping containers, survived COVID fundraising woes via YC, raised $990M efficiently, and iterated relentlessly.
- 🔬 Technical Leaps: Highest-efficiency engines, cryogenic testing in Moses Lake, hardware-in-loop avionics sims, and Cape Canaveral launch site prep position first orbital flight for late 2024.
- ⚙️ Iteration & Software Power: In-house everything accelerates failure learning from weeks to days; Boltline software manages reusability data, with AI poised to automate factory workflows seamlessly.
- 🌌 Space Economy Boom: Success means daily flights, freeing capacity from Starlink dominance, sparking ‘crazy ideas’ and ubiquitous access like the iPhone App Store transformed mobile.
Insights
Could fully reusable rockets trigger an ‘iPhone App Store’ moment, unleashing a wave of innovative space applications?
Time: 0:27 – 0:38
Category: AI-Driven Innovation EconomyAnswer: Stoke Space’s rapid reusability allows rockets to return precisely when and where needed, dramatically lowering costs and boosting availability beyond the current 150 launches per year dominated by Starlink. This could diversify the space economy and enable new verticals as customers pay premiums for access today. (Start at 0:27)
What if surviving extreme reentry heat made expensive upper-stage capsules reusable like aircraft?
Time: 2:48 – 3:51
Category: AI-Driven Innovation EconomyAnswer: Stoke’s Andromeda stage uses a novel cold liquid hydrogen heat exchanger and 24 thrusters to endure 2,700°F and 17,000 mph descent, preventing the waste of multimillion-dollar, flight-tested hardware. This full reusability scales flight frequency without proportionally scaling factories. (Start at 2:48)
How can backyard prototypes and relentless conviction turn rocket engineers into a $990M-funded space startup?
Time: 4:47 – 10:22
Category: AI Investment TrendsAnswer: Founders quit stable Blue Origin jobs amid pandemic risks and young families, built initial thrusters in shipping containers, joined YC for fundraising know-how, and persisted through endless ‘nos’ by demonstrating hardware early. Their focus on reusability from day one differentiated them from 150+ competitors. (Start at 4:47)
Why is rapid in-house iteration the secret to conquering rocket development’s long timelines?
Time: 11:19 – 12:24
Category: AI-Driven Innovation EconomyAnswer: By manufacturing all parts internally—from engines to avionics—Stoke collapses iteration cycles from months to days, enabling quick learning from failures and tying development speed to cost efficiency. This contrasts with supplier-dependent delays in traditional aerospace. (Start at 11:19)
How might AI supercharge custom software to enable garage-to-orbit scaling in hardware-heavy industries?
Time: 12:27 – 13:52
Category: AI in Everyday LifeAnswer: Stoke’s Boltline tool tracks part life, maintenance, and telemetry for rapid reusability under FAA oversight; AI developments promise to automate factory tasks, abstract data insights, and streamline operations from one-off builds to daily flights. This software foundation bridges informal startups to regulated spaceflight. (Start at 12:27)