TheCurtiss V-1570 Conqueror was aV12 liquid-cooled aircraft engine. Representing a more powerful version of theCurtiss D-12, the engine entered production in1926 and flew in numerous aircraft.[1]
Designed in 1924 as a military successor to theCurtiss D-12, initially named the Conqueror, it was later given the military designation of V-1570 based on itsdisplacement of 1,570 cubic inches (26 L). The engine featured open-ended cylinder liners (advanced technology for the period) and pressurizedliquid cooling. Developments including the use of asupercharger gradually increased power output until reliability problems due to overheating and coolant leaks became apparent. Military funding for further development of the Conqueror was cut in 1932, efforts by Curtiss to market the engine for civilairliners failed and the line was dropped from production.
