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 Events January * January 3 – Theodoros Pangalos declares himself dictator in Greece. * January 8 **Abdul-Aziz ibn Saud is crowned King of Hejaz. ** Crown Prince Nguyễn Phúc Vĩnh Thuy ascends the throne, the last monarch of V ...

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 Displacement may refer to: Physical sciences Mathematics and Physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

of 1,570 cubic inches (26 L). The engine featured open-ended cylinder liners (advanced technology for the period) and pressurized liquid cooling. 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 induct ...

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 The Bellanca TES (Tandem Experimental Sesquiplane) or Blue Streak was a push-pull sesquiplane aircraft designed by Giuseppe Mario Bellanca in 1929 for the first non-stop flight from Seattle to Tokyo. In 1930 it was refitted with two 600 hp ...

(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 The Consolidated P-30 (PB-2) was a 1930s United States two-seat fighter aircraft. An attack version called the A-11 was also built, along with two Y1P-25 prototypes and YP-27, Y1P-28, and XP-33 proposals. The P-30 is significant for being the fi ...

* Consolidated Y1P-25 *

Curtiss A-8 The Curtiss A-8 was a low-wing monoplane ground-attack aircraft built by the United States company Curtiss Aeroplane and Motor Company, designed in response to a 1929 United States Army Air Corps requirement for an attack aircraft to replace th ...

* Curtiss B-2 Condor * Curtiss CO Condor *

Curtiss P-1 Hawk The P-1 Hawk (Curtiss Model 34) was a 1920s open-cockpit biplane fighter aircraft of the United States Army Air Corps. An earlier variant of the same aircraft had been designated PW-8 prior to 1925."US Military Aircraft Designations & Serials 19 ...

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 Th ...

* Curtiss XO-30 (not built) * Curtiss XP-10 *

Dornier Do X The Dornier Do X was the largest, heaviest, and most powerful flying boat in the world when it was produced by the Dornier company of Germany in 1929. First conceived by Claude Dornier in 1924, planning started in late 1925 and after over 240 ...

* Douglas O-31 * Douglas O-43 * Douglas Y1B-7 *

Huff-Daland XB-1 The Huff-Daland XB-1 was a prototype bomber aircraft built for the United States Army Air Corps. The XB-1 was the first aircraft named using just a ''B-'' designation. Prior to 1926, the U.S. Army used ''LB-'' and ''HB-'' prefixes, signifying ' ...

Lockheed YP-24 The Lockheed-Detroit YP-24 was a 1930s prototype two-seat fighter aircraft produced by Detroit Lockheed. An attack version called the A-9 was also proposed. The YP-24 is most remarkable for being the first fighter aircraft to bear the Lockheed ...

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 The Tupolev TB-3 (russian: Тяжёлый Бомбардировщик, Tyazhyolyy Bombardirovshchik, Heavy Bomber, civilian designation ANT-6) was a monoplane heavy bomber deployed by the Soviet Air Force in the 1930s and used during the early ...

Other applications

* Mormon Meteor III (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