Curtiss V-1570

V-1570

A V-1570 on display at the National Museum of the United States Air Force.
Type	V12 piston engine
Manufacturer	Curtiss Aeroplane and Motor Company
First run	1926

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.^[1]

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. Developments including the use of a supercharger 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 airliners failed and the line was dropped from production.

Applications

Consolidated A-11
Curtiss A-8
Huff-Daland XB-1
Curtiss B-2 Condor
Tupolev TB-3
Douglas Y1B-7
Atlantic (Fokker U.S.) XB-8
Thomas-Morse YO-23
Douglas O-31
Douglas O-43
Dornier Do X
Curtiss P-1 Hawk
Curtiss P-6 Hawk
Boeing B-9
Boeing XP-9 (Model 96)
Curtiss XP-10
Berliner-Joyce P-16
Curtiss YP-20
Lockheed YP-24
Consolidated Y1P-25
Consolidated P-30
Curtiss XO-30 (not built)
Mormon Meteor III (custom Bonneville salt flat race car)
Bellanca TES (version 1930)

Specifications (V-1570-59)

Data from

General characteristics

Type: 12-cylinder liquid-cooled Vee aircraft engine
Bore: 5 ¹⁄₈ in (130.2mm)
Stroke: 6 ¹¹⁄₃₂ in (161.1mm)
Displacement: 1,570.4 in³ (25.73 L)
Dry weight: 770 lbs (349 kg)

Components

Cooling system: Liquid-cooled

Performance

Power output: 675 hp (504 kW) at 2,450 rpm
Specific power: 0.43 hp/in³ (19.6 kW/l)

References

Notes

↑ Gunston 1989, p.46.

Bibliography

Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9

External links

Wikimedia Commons has media related to Curtiss V-1570.

Curtiss aircraft engines

Piston engines	A-2 B-8 C-6 Challenger D-12 H-1640 K-12 Model K OX-5 OXX R-600 V-1570 V-2

United States military piston aircraft engine designation system

H (four-bank H-configuration inline)	H-1640 XH-2240 H-2470 XH-2600 XH-3130 XH-3730 H-4070

I (inverted-V inline)	IV-1430 IV-2040 IV-2220

L (single-bank inline)	L-330 L-365 L-375 L-390 L-410 L-440 L-510 L-825

O (opposed)	O-15 O-40 O-45 O-90 O-100 O-145 O-150 O-170 O-175 O-180 O-190 O-200 (C) O-200 (F) O-205 O-235 O-290 O-300 O-335 O-360 (C) O-360 (L) O-405 O-425 O-435 O-470 O-480 O-520 O-540 (F) O-540 (L) O-550 O-580 O-805 O-1230

R (radial)	R-250 R-265 R-270 R-370 (LB) R-370 (K) R-420 R-440 R-500 R-540 (W) R-540 (K) R-545 R-550 R-600 R-670 R-680 R-720 R-755 R-760 R-790 R-830 R-915 R-975 DR-980 R-985 R-1044 R-1300 R-1340 R-1454 R-1510 R-1535 R-1640 R-1670 R-1690 R-1750 R-1820 R-1830 R-1860 R-2000 R-2060 R-2160 R-2180 R-2600 R-2800 R-3350 R-4090 R-4360 XR-7755

V (upright-V inline)	V-720 V-770 V-1150 V-1237 V-1400 V-1410 V-1440 V-1460 V-1510 V-1560 V-1570 V-1650 (L) V-1650 (P) V-1710 V-1950 V-3420

W (three-bank W-configuration inline)	W-2779

See also: X-1800 US military gas turbine aeroengines Piston engine configurations

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