Curtiss V-1570 Conqueror
{{Short description|American piston aircraft engine}}
| {{Infobox Aircraft Begin
|name= V-1570 |image = File:Curtiss V-1570 NASM.jpg |caption = A V-1570-53 at the National Air and Space Museum. }} {{Infobox Aircraft Engine |type= V12 piston engine |national origin = |manufacturer= Curtiss Aeroplane and Motor Company |first run= 1926 |major applications= |number built = |program cost = |unit cost = $7000 (1933){{cite web | url=https://books.google.com/books?id=Kl46HYlE1PoC&pg=PA1070 | title=Hearings | date=1933 }} |developed from = |developed into = |variants with their own articles = }} |
The Curtiss V-1570 Conqueror was a V12 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. 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.
Variants
{{div col|colwidth=27em}}
;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
{{div col end}}
Applications
{{div col|colwidth=27em}}
- Atlantic XB-8
- Bellanca TES (1930 version)
- Berliner-Joyce P-16
- Boeing XP-9
- Boeing Y1B-9
- Consolidated A-11
- Consolidated P-30
- Consolidated Y1P-25
- Curtiss A-8
- Curtiss B-2 Condor
- Curtiss CO Condor
- Curtiss P-1 Hawk
- Curtiss P-6 Hawk
- 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
- Tupolev TB-3
{{div col end}}
=Other applications=
- Mormon Meteor III (custom Bonneville salt flat race car)
Specifications (V-1570 direct drive)
File:Curtiss V-1570 side view NASM.jpg
{{pistonspecs
|ref=Grey and Gunston.Grey 1931, p. 72.
|type=V-12 liquid-cooled aircraft piston engine
|bore={{cvt|5+1/8|in}}
|stroke={{cvt|6+11/32|in}}
|displacement={{cvt|1570.4|cuin|L|1}}
|length={{cvt|64|in}}
|diameter=
|width={{cvt|26+5/16|in}}
|height={{cvt|39+1/16|in}}
|weight= {{cvt|835|lb}}
|valvetrain=Inlet and exhaust overhead camshafts operating two exhaust and two inlet valves per cylinder, via 'T' head cam followers.
|supercharger=
|turbocharger=
|fuelsystem=Two Stromberg NA-Y6-O carburetors
|fueltype=
|oilsystem=Dry sump, pressure feed and spray with scavenge.
|coolingsystem=Liquid-cooled (water or chemical coolant)
|power={{cvt|600|hp}} at 2,400 rpm (direct-drive)
|specpower=0.43 hp/in³ (19.6 kW/L)
|compression=6.1:1
|fuelcon=
|specfuelcon={{cvt|0.53|lb/hph|kg/kWh}}
|oilcon={{cvt|0.02|lb/hph|kg/kWh}}
|power/weight=
|designer=
|reduction_gear=Direct-drive
|general_other=
|components_other=
Ignition system: One Scintilla magneto and two distributors
|performance_other=
}}
See also
{{Aircontent
|related=
|similar engines=
|lists=
|see also=
}}
References
{{Commons category}}
=Notes=
{{reflist}}
=Bibliography=
{{refbegin}}
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. {{ISBN|1-85260-163-9}}
- Grey, C.G. Jane's all the World's Aircraft 1931 London, England. Sampson Low, Marston & Company Limited
{{refend}}
{{Curtiss aeroengines}}
{{US military piston aeroengines}}