The Curtiss V-1570 Conqueror was a 12-cylinder vee liquid-cooled aircraft engine. Representing a more powerful version of the Curtiss D-12, the engine entered production in 1926 and flew in numerous aircraft.Gunston 1989, p. 46.

Design and development

Designed in 1924 as a military successor to the Curtiss D-12, initially named the Conqueror, it was later given the military designation of V-1570 based on its displacement of 1,570 cubic inches (26 L). The engine featured open-ended cylinder liners (advanced technology for the period) and pressurized

liquid cooling Liquid cooling refers to cooling by means of the convection or circulation of a liquid. Examples of liquid cooling technologies include: * Cooling by convection or circulation of coolant, including water cooling * Liquid cooling and ventilat ...

. Developments including the use of a

supercharger In an internal combustion engine, a supercharger compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement. The current categorisation is that a supercharger is a form of forced indu ...

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 civil

airliner An airliner is a type of aircraft for transporting passengers and air cargo. Such aircraft are most often operated by airlines. Although the definition of an airliner can vary from country to country, an airliner is typically defined as an ...

s failed and the line was dropped from production.

Variants

;V-1570-1 ;V-1570-5 ;V-1570-7 ;GV-1570-7: geared -7 ;V-1570-9 ;V-1570-11 ;V-1570-13 ;V-1570-15 ;SV-1570-15 ;V-1570-17 ;V-1570-23 ;V-1570-25 ;V-1570-27 ;V-1570-29 ;V-1570-33 ;V-1570-53 ;V-1570-55 ;V-1570-57 ;V-1570-59 ;V-1570-61 ;V-1570-79 ;GIV-1570-FM ;V-1570-C ;V-1570-F ;GIV-1570C

Applications

Atlantic XB-8 The Fokker XB-8 was a bomber built for the United States Army Air Corps in the 1930s, derived from the high-speed Fokker O-27 observation aircraft. Design and development During assembly, the second prototype XO-27 was converted to a bomber pro ...

* Bellanca TES (1930 version) * Berliner-Joyce P-16 * Boeing XP-9 *

Boeing Y1B-9 The Boeing YB-9 was the first all-metal monoplane bomber aircraft designed for the United States Army Air Corps. The YB-9 was an enlarged alteration of Boeing's Model 200 Monomail commercial transport. Design and development In May 1930, Boei ...

* Consolidated A-11 * Consolidated P-30 *

Consolidated Y1P-25 Consolidated may refer to: *Consolidated (band) **'' ¡Consolidated!'', a 1989 extended play * Consolidated Aircraft (later Convair), an aircraft manufacturer *Consolidated city-county *Consolidated Communications * Consolidated school district *C ...

* Curtiss A-8 * Curtiss B-2 Condor * Curtiss CO Condor * Curtiss P-1 Hawk *

Curtiss P-6 Hawk The Curtiss P-6 Hawk is an American single-engine biplane fighter introduced into service in the late 1920s with the United States Army Air Corps and operated until the late 1930s prior to the outbreak of World War II. Design and development ...

* Curtiss XO-30 (not built) * Curtiss XP-10 * Dornier Do X * Douglas O-31 * Douglas O-43 * Douglas Y1B-7 * Huff-Daland XB-1 * Lockheed YP-24 *

Thomas-Morse YO-23 The Thomas-Morse O-19 was an American observation biplane built by the Thomas-Morse Aircraft Company for the United States Army Air Corps. Development The O-19 was based on the earlier Thomas-Morse O-6 biplane. It was a conventional two-seat ...

* Tupolev TB-3

Other applications

Mormon Meteor III The ''Mormon Meteor I'' and ''III'' were two land speed record cars built in the 1930s by Ab Jenkins. Duesenberg Special The ''Duesenberg Special'' was a one-off speed record car. It was built in 1935 on a supercharged Duesenberg Model J rolli ...

(custom Bonneville salt flat race car)

Specifications (V-1570 direct drive)

References

Notes

Bibliography

* Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. * Grey, C.G. ''Jane's all the World's Aircraft 1931'' London, England. Sampson Low, Marston & Company Limited {{US military piston aeroengines V-1750 1920s aircraft piston engines