Overview

• United Airlines Ventures confirmed an investment in Astro Mechanica on Aug. 20, with financial terms not disclosed.
• Astro Mechanica’s proposed Duality engine uses a hybrid/turboelectric architecture that the company says can operate as a turbofan, a turbojet, and a ramjet for efficient performance from takeoff to beyond Mach 3.
• The company positions the technology for both defense and commercial markets, with initial applications anticipated in military contexts before passenger use.
• Astro Mechanica claims its approach could enable true transpacific supersonic range, although timelines and certification pathways remain uncertain.
• United’s move follows its earlier commitment to Boom Supersonic, and Astro Mechanica counts Andreessen Horowitz, Lowercarbon Capital, and Giant Step among existing backers.