00:00 – Introductions
Welcome and framing of the conversation with Stefan Powell, Co-founder, CEO & CTO of Dawn Aerospace. Stefan joins from New Zealand, where Dawn develops horizontal takeoff/landing spaceplanes and green bi-propellant satellite propulsion systems.
01:10 – Why Spaceplanes?
Stefan describes the core belief behind Dawn:
“To build a spacefaring civilization, we have to move away from the culture of throwing away rockets.”
He argues that runway-operated vehicles will ultimately enable daily access to space, similar to aviation.
03:22 – The Mk-II Aurora Spaceplane
Dawn’s current demonstrator, Mk-II Aurora, will fly to suborbital altitudes, return to the same runway, and repeat flights multiple times per day.
Key points:
Liquid green propellants, no toxic hydrazine
Designed to collect microgravity science data cost-effectively
Basis for Mk-III orbital system
06:05 – What Makes Aurora Different
Stefan explains how Dawn is not trying to replace Falcon 9 or Starship:
“This is FedEx overnight, not container shipping.”
Use-cases include:
Rapid hypersonic testing
Defense flight experimentation
Space manufacturing precursor missions
Upper-atmosphere research
09:44 – Why Reusability Must Look Like Aviation
Stefan critiques vertical launch economics:
“Even reusable rockets are still reusable in the rocket sense, not in the aviation sense.”
Aircraft-like maintenance, not refurbishment, is the goal.
11:55 – The Path to Mk-III: An Orbital Spaceplane
Aurora is an incremental program:
Mk-II → Mk-III → eventual scaled fleet for on-orbit logistics, satellite deployment, return cargo, and debris management. The team uses a “test, fly, iterate” cadence inspired by early SpaceX.
14:20 – Propulsion: Green Bi-propellant Thrusters
Dawn operates a rapidly growing business providing satellite propulsion:
Non-toxic replacement for hydrazine
Used by commercial and government constellations
Increasingly important for space traffic management and debris avoidance
Stefan emphasizes the dual strategy:
“Our propulsion business is a profitable foundation while we develop the spaceplane.”
17:52 – Regulatory & Runway Operations
Dawn works closely with regulators to enable air-space integrated flight.
Key takeaway: “We’re not shutting down airspace to fly our vehicles.”
This is foundational for high-frequency missions.
20:41 – Defense & National Security Interest
Aurora’s relevance includes:
Hypersonic testing
Rapid on-demand launch
High-altitude reconnaissance profiles
Potential future responsive space cargo
24:32 – Market Entry Strategy
Revenue roadmap:
Propulsion systems (existing revenue)
Mk-II suborbital flights (microgravity, hypersonics)
Mk-III orbital logistics and return cargo
Long-term: true space logistics network
26:48 – Hiring, Culture & Team
Stefan discusses Dawn’s talent model rooted in Kiwi aerospace pragmatism, rapid prototyping, and avoiding bureaucracy early.
29:40 – Vision: Daily Spaceflight
Stefan closes with the long-term view:
“Humanity becomes a space civilization when flying to space feels like flying an airplane — not launching a missile.”
