What it sells
Building persistent, high-performance infrastructure in the sky
Business model breakdown
Buyer: who owns the budget?
UnverifiedGovernment/defense, maritime, wildfire and telecom agencies (hypothesis from listed use cases).
Trigger: what makes them buy now?
Need for persistent imagery, 5G direct-to-device connectivity and PNT without orbital launch constraints (maritime awareness, border security, wildfire detection, search and rescue).
Workflow: what inputs become what output?
Solar-powered autonomous StratoSat aircraft (Evenstar: 120 ft wingspan, 20 km altitude, 15 kg payload) fly for months, repositioning in real time, returning to swap payloads, delivering sub-10 cm video and connectivity.
Economics: what it saves and how it charges
UnverifiedSells persistent aerial infrastructure/service positioned as lower cost than satellites; no launch needed. No revenue figures given.
Distribution: how it reaches customers
UnverifiedDirect, enterprise/government via info@radicalaero.com; pre-commercial (full-size prototype first flown).
Funding history and coverage
| Round date | Stage | Amount | Investors | Source |
|---|---|---|---|---|
| — | Y Combinator Winter 2023 | — | Y Combinator | ycombinator.com |
Profiles summarize public reporting and company websites. Business-model notes are MaxBC's reading of that material, not confirmed facts; unknowns are left blank rather than guessed. Updated 2026-10-12.