Halcyon

Overview

A planned Mach 5 commercial hypersonic airliner that would carry approximately 20 passengers at 90,000+ feet altitude, cutting transatlantic flight times from 7 hours to 90 minutes. Represents Hermeus's long-term commercial vision.

Still a long-term aspiration rather than a near-term program. Hermeus is currently prioritizing defense aircraft, Quarterhorse flight testing, and propulsion maturation.

Key Specs