Ramjet-powered vehicle will be air-launched from a reusable Quarterhorse aircraft, avoiding the need for a rocket booster on each test

Hermeus Mk 1 aircraft will be used to validate design, performance and systems in high-speed takeoffs and landings

Company to be part of $100 million investment round to support development of Quarterhorse and Darkhorse aircraft

Named 'Quarterhorse', unmanned aircraft powered J85 engine at an event with guests, but will only serve for static tests