to a standard Pratt & Whitney F100. The precooler lowers the temperature of incoming air, preventing the melting of engine parts and allowing the engine to be more efficient.

The Chimera engine is a turbine-based combined cycle machine that combines a pre-cooled turbine with a ramjet. It was successfully tested in November 2022. It is planned to power the Quarterhorse Mk 3, which will reach speeds close to Mach